2009-2005jan - Yerevan Physics Institute

Transcription

Record 1 of 499
Author(s): Aaron, FD (Aaron, F. D.); Alexa, C (Alexa, C.); Andreev, V (Andreev, V.);
Antunovic, B (Antunovic, B.); Aplin, S (Aplin, S.); Asmone, A (Asmone, A.); Astvatsatourov, A
(Astvatsatourov, A.); Backovic, S (Backovic, S.); Baghdasaryan, A (Baghdasaryan, A.);
Barrelet, E (Barrelet, E.); Bartel, W (Bartel, W.); Begzsuren, K (Begzsuren, K.); Behnke, O
(Behnke, O.); Belousov, A (Belousov, A.); Bizot, JC (Bizot, J. C.); Boudry, V (Boudry, V.);
Bozovic-Jelisavcic, I (Bozovic-Jelisavcic, I.); Bracinik, J (Bracinik, J.); Brandt, G (Brandt, G.);
Brinkmann, M (Brinkmann, M.); Brisson, V (Brisson, V.); Bruncko, D (Bruncko, D.);
Bunyatyan, A (Bunyatyan, A.); Buschhorn, G (Buschhorn, G.); Bystritskaya, L (Bystritskaya,
L.); Campbell, AJ (Campbell, A. J.); Avila, KBC (Avila, K. B. Cantun); Cassol-Brunner, F
(Cassol-Brunner, F.); Cerny, K (Cerny, K.); Cerny, V (Cerny, V.); Chekelian, V (Chekelian, V.);
Cholewa, A (Cholewa, A.); Contreras, JG (Contreras, J. G.); Coughlan, JA (Coughlan, J. A.);
Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton, JB (Dainton, J. B.); Daum, K (Daum,
K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.); Del Degan, M
(Del Degan, M.); Delvax, J (Delvax, J.); De Roeck, A (De Roeck, A.); De Wolf, EA (De Wolf,
E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dossanov, A (Dossanov, A.);
Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S (Egli,
S.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Falkiewicz, A (Falkiewicz, A.); Faulkner, PJW
(Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A (Fedotov, A.); Felst, R (Felst, R.);
Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.); Fischer, DJ (Fischer, D. -J.); Fleischer, M
(Fleischer, M.); Fomenko, A (Fomenko, A.); Gabathuler, E (Gabathuler, E.); Gayler, J (Gayler,
J.); Ghazaryan, S (Ghazaryan, S.); Glazov, A (Glazov, A.); Glushkov, I (Glushkov, I.); Goerlich,
L (Goerlich, L.); Gogitidze, N (Gogitidze, N.); Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab,
C.); Greenshaw, T (Greenshaw, T.); Grell, BR (Grell, B. R.); Grindhammer, G (Grindhammer,
G.); Habib, S (Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.); Helebrant, C
(Helebrant, C.); Henderson, RCW (Henderson, R. C. W.); Hennekemper, E (Hennekemper, E.);
Henschel, H (Henschel, H.); Herbst, M (Herbst, M.); Herrera, G (Herrera, G.); Hildebrandt, M
(Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D (Hoffmann, D.); Horisberger, R
(Horisberger, R.); Hreus, T (Hreus, T.); Jacquet, M (Jacquet, M.); Janssen, ME (Janssen, M. E.);
Janssen, X (Janssen, X.); Jemanov, V (Jemanov, V.); Jonsson, L (Joensson, L.); Jung, AW (Jung,
A. W.); Jung, H (Jung, H.); Kapichine, M (Kapichine, M.); Katzy, J (Katzy, J.); Kenyon, IR
(Kenyon, I. R.); Kiesling, C (Kiesling, C.); Klein, M (Klein, M.); Kleinwort, C (Kleinwort, C.);
Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Kogler, R (Kogler, R.); Korbel, V (Korbel,
V.); Kostka, P (Kostka, P.); Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar,
J (Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Kutak, K
(Kutak, K.); Landon, MPJ (Landon, M. P. J.); Lange, W (Lange, W.); Lastovicka-Medin, G
(Lastovicka-Medin, G.); Laycock, P (Laycock, P.); Lebedev, A (Lebedev, A.); Leibenguth, G
(Leibenguth, G.); Lendermann, V (Lendermann, V.); Levonian, S (Levonian, S.); Li, G (Li, G.);
Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N
(Loktionova, N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.);
Lytkin, L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage,
P (Marage, P.); Marti, L (Marti, Li.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S.
J.); Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer,
H.); Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S
(Mikocki, S.); Milcewicz-Mika, I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A
(Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Mudrinic, M (Mudrinic,
M.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Naroska, B (Naroska, B.); Naumann, T
(Naumann, Th.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.); Nikiforov, A
(Nikiforov, A.); Nowak, G (Nowak, G.); Nowak, K (Nowak, K.); Nozicka, M (Nozicka, M.);
Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.); Osman, S (Osman, S.); Ozerov, D (Ozerov,
D.); Palichik, V (Palichik, V.); Panagoulias, I (Panagoulias, I.); Pandurovic, M (Pandurovic, M.);
Papadopoulou, T (Papadopoulou, Th.); Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.);
Pejchal, O (Pejchal, O.); Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric,
I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R (Polifka, R.);
Povh, B (Povh, B.); Preda, T (Preda, T.); Radescu, V (Radescu, V.); Rahmat, AJ (Rahmat, A. J.);
Raicevic, N (Raicevic, N.); Raspiareza, A (Raspiareza, A.); Ravdandorj, T (Ravdandorj, T.);
Reimer, P (Reimer, P.); Rizvi, E (Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland,
B.); Roosen, R (Roosen, R.); Rostovtsev, A (Rostovtsev, A.); Rotaru, M (Rotaru, M.); Tabasco,
JER (Tabasco, J. E. Ruiz); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D
(Salek, D.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.);
Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A
(Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F (Sefkow, F.); ShawWest, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.);
Shushkevich, S (Shushkevich, S.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Soloviev, Y
(Soloviev, Y.); Sopicki, P (Sopicki, P.); South, D (South, D.); Spaskov, V (Spaskov, V.);
Specka, A (Specka, A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B (Stella,
B.); Stoicea, G (Stoicea, G.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T
(Sykora, T.); Tchoulakov, V (Tchoulakov, V.); Thompson, G (Thompson, G.); Thompson, PD
(Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F (Tomasz, F.); Tran, TH (Tran, T. H.); Traynor,
D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I (Tsakov, I.);
Tseepeldorj, B (Tseepeldorj, B.); Turnau, J (Turnau, J.); Urban, K (Urban, K.); Valkarova, A
(Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen, P (Van Mechelen, P.); Trevino, AV
(Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.); Volchinski, V
(Volchinski, V.); von den Driesch, M (von den Driesch, M.); Wegener, D (Wegener, D.);
Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.); Wunsch, E (Wuensch, E.); Zacek, J
(Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhokin, A (Zhokin, A.);
Zimmermann, T (Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: A general search for new phenomena at HERA
Source: PHYSICS LETTERS B, 674 (4-5): 257-268 APR 27 2009
Abstract: A model-independent search for deviations from the Standard Model prediction is
performed using the full e(+/-) p data sample collected by the H1 experiment at HERA. All event
topologies involving isolated electrons, photons, muons, neutrinos and jets with transverse
momenta above 20 GeV are investigated in a single analysis. Events are assigned to exclusive
classes according to their final state. A dedicated algorithm is used to search for deviations from
the Standard Model in the distributions of the scalar sum of transverse momenta or the invariant
mass of final state particles and to quantify their significance. Variables related to angular
distributions and energy sharing between final state particles are also introduced to study the
final state topologies. No significant deviation from the Standard Model expectation is observed
in the phase space covered by this analysis. (C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2009.03.034
Record 2 of 499
Author(s): Chergui, M (Chergui, M.); Melikyan, A (Melikyan, A.); Minassian, H (Minassian,
H.)
Title: Calculation of Surface Plasmon Frequencies of Two, Three, and Four Strongly Interacting
Nanospheres
Source: JOURNAL OF PHYSICAL CHEMISTRY C, 113 (16): 6463-6471 APR 23 2009
Abstract: An approximate analytical approach is developed for the calculation of the surface
plasmon frequency of a system of interacting nanospheres for arbitrary values of interparticle
distances. In addition to having a simple and physically clear form, the final formulae also
describe adequately the dependence of the resonance frequencies on the parameters of the
problem. The electric field of each of the interacting spheres is approximated by the field of a
dipole, placed at a point, with respect to which the tensor of quadrupole moment of the charge
distribution vanishes. Because of this procedure, the contribution of higher-order multipoles is
effectively suppressed, unlike the case where the multipole moments of interacting spheres are
calculated with respect to their centers. It is shown that the derived expressions adequately
describe known experimental data on the red shift of the SP wavelength with decreasing
interparticle distance. The explicit expression for dependence of the interparticle distance on the
SP resonance frequency ("plasmon nanoruler equation") is obtained for the first time. The results
are also compared with known numerical calculations for two, three, and four identical spheres,
and excellent agreement is demonstrated even (in the case of two spheres) for interparticle
center-to-center distances as small as 1.05 times the particle diameter.
ISSN: 1932-7447
DOI: 10.1021/jp810646m
Record 3 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Ghahramanyan, T (Ghahramanyan, T.); Kashin,
AL (Kashin, A. L.); Khachatryan, HG (Khachatryan, H. G.); Kocharyan, AA (Kocharyan, A.
A.); Kuloghlian, H (Kuloghlian, H.); Vetrugno, D (Vetrugno, D.); Yegorian, G (Yegorian, G.)
Title: Plane-mirroring anomaly in the cosmic microwave background maps
Source: ASTRONOMY & ASTROPHYSICS, 498 (1): L1-L3 APR 2009
Abstract: The plane-mirror symmetry previously noticed in the Cosmic Microwave Background
(CMB) temperature anisotropy maps of Wilkinson Microwave Anisotropy Probe is shown to
possess certain anomalous properties. The degree of the randomness determined by the
Kolmogorov stochasticity parameter in both symmetry regions appears to have identical values
which, however, essentially differ from the corresponding values for other sky regions. If the
mirroring were of cosmological origin, this would imply either additional randomizing properties
in those directions of the Universe or their different line-of-sight depth. This analysis also
provides a way to test the hypothesis of a link between the nature of dark energy and
inhomogeneities.
ISSN: 0004-6361
DOI: 10.1051/0004-6361/200911795
Record 4 of 499
Author(s): Aleksanyan, E (Aleksanyan, Eduard); Harutunyan, V (Harutunyan, Vachagan);
Kostanyan, R (Kostanyan, Radik); Feldbach, E (Feldbach, Eduard); Kirm, M (Kirm, Marco);
Liblik, P (Liblik, Peeter); Makhov, VN (Makhov, Vladimir N.); Vielhauer, S (Vielhauer,
Sebastian)
Title: 5d-4f luminescence of Er3+ in YAG:Er3+
Source: OPTICAL MATERIALS, 31 (6): 1038-1041 APR 2009
Abstract: Interconfigurational 4f(10)d <-> 4f(11) transitions of the Er3+ ion in the YAG host
were studied under both VUV photon (synchrotron radiation) and electron beam excitation. It
was found that the lowest low-spin 5d level of the Er3+ ion has a rather large energy gap to the
next lower 4f(2)D(2)(5/2) crystal-field level, which results in a relatively low rate of
nonradiative transitions from this 5d level leading to the appearance of weak spin-allowed 5d-4f
luminescence at low temperature. The lowest high-spin 5d level, from which spin-forbidden 5d4f radiative transitions could occur potentially, is situated only at similar to 500 cm(-1) above the
D-4(1/2) level. Such close location allows fast depopulation of the 5d level resulting in the
absence of spin-forbidden 5d-4f luminescence and appearance of D-4(1/2) 4f-4f luminescence.
(c) 2008 Elsevier B.V. All rights reserved.
ISSN: 0925-3467
DOI: 10.1016/j.optmat.2008.11.017
Record 5 of 499
Author(s): Izmailian, NS (Izmailian, N. Sh.); Yeh, YN (Yeh, Yeong-Nan)
Title: Ising model with mixed boundary conditions: Universal amplitude ratios
Source: NUCLEAR PHYSICS B, 814 (3): 573-581 JUN 21 2009
Abstract: In the vicinity of boundaries the bulk universality class of critical phenomena splits
into several boundary universality classes, depending upon whether the tendency to order in the
boundary is smaller or larger than in the bulk. For Ising universality class there are five different
boundary universality classes: periodic. antiperiodic, free, fixed and mixed (mixture of the last
two). In this paper we present the new set of the universal amplitude ratios for the mixed
boundary universality class. The results are in perfect agreement with a perturbated conformal
field theory scenario proposed by Cardy [J. Cardy, Nucl. Phys. B 270 (1986) 186]. (C) 2009
Elsevier B.V. All rights reserved.
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2009.01.017
Record 6 of 499
Author(s): Ivanov, NY (Ivanov, N. Ya.)
Title: The ratio R = F-L/F-T in DIS as a probe of the charm content of the proton
Source: NUCLEAR PHYSICS B, 814 (1-2): 142-155 JUN 11 2009
Abstract: We analyze the Callan-Gross ratio R(x, Q(2)) = F-L/F-T in heavy-quark
leptoproduction as a probe of the charm content of the proton. To estimate the charm-initiated
contributions, we use the ACOT(chi) variable-flavor-number scheme. Our analysis shows that
charm densities of the recent CTEQ sets of parton distributions have sizeable impact on the
Callan-Gross ratio in a wide region of x and Q2. In particular, the ACOT(X) predictions for the
quantity R(x, Q2) are about half as large as the corresponding expectations of the photon-gluon
fusion mechanism for x similar to 10(-2)-10(-1) and Q(2) >> m(2). This is because the structure
functions F-T(x, Q(2)) and F-L(x, Q(2)) have different dependences on the mass logarithms of
the type alpha(s) ln(Q(2)/m(2)). On the other hand, our recent studies indicate that, contrary to
the production cross sections, the Callan-Gross ratio is sufficiently stable under radiative
corrections to the photon-gluon fusion component for x greater than or similar to 10(-4). We
conclude that the quantity R(x, Q(2)) in heavy-quark leptoproduction is perturbatively stable but
sensitive to resummation of the mass logarithms. For this reason, in contrast to the structure
functions, the ratio R(x, Q(2)) = F-L/F-T could be good probe of the charm density in the proton.
(C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2009.01.013
Record 7 of 499
Author(s): Sarkisyan, EM (Sarkisyan, E. M.); Akopyan, AA (Akopyan, A. A.); Gevorgyan, SG
(Gevorgyan, S. G.); Oganesyan, KB (Oganesyan, K. B.); Petrosyan, KG (Petrosyan, K. G.);
Saakyan, VA (Saakyan, V. A.)
Title: Raman coupling and cooper pairing in cold atomic Fermi gases
Source: LASER PHYSICS, 19 (4): 881-883 APR 2009
Abstract: We consider a cold two-species atomic Fermi gas confined in a trap. We combine the
Hainan coupling between the states (we assume them to be the states with different spins) with
the Cooper pairing of atoms with these different spins. This opens up a new prospect for
investigation of interplay between various phenomena involving Raman coupling (e.g., atom
lasers, dark-state polaritons) and effects caused by Cooper pairing of particles (e.g.,
superfluidity). We have obtained a threshold of transition from oscillatory to amplifying
behavior of matter waves.
ISSN: 1054-660X
DOI: 10.1134/S1054660X09040483
Record 8 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Allahverdyan, AE (Allahverdyan, A. E.);
Ghahramanyan, T (Ghahramanyan, T.); Kashin, AL (Kashin, A. L.); Khachatryan, HG
(Khachatryan, H. G.); Kocharyan, AA (Kocharyan, A. A.); Kuloghlian, H (Kuloghlian, H.);
Mirzoyan, S (Mirzoyan, S.); Poghosian, E (Poghosian, E.); Yegorian, G (Yegorian, G.)
Title: Kolmogorov cosmic microwave background sky
Source: ASTRONOMY & ASTROPHYSICS, 497 (2): 343-346 APR 2009
Abstract: A new map of the sky representing the degree of randomness in the cosmic
microwave background (CMB) temperature has been obtained. The map based on estimation of
the Kolmogorov stochasticity parameter clearly distinguishes the contribution of the Galactic
disk from the CMB and reveals regions of various degrees of randomness that can reflect the
properties of inhomogeneities in the Universe. For example, among the high randomness regions
is the southern non-Gaussian anomaly, the Cold Spot, with a stratification expected for the voids.
Existence of its counterpart, a Northern Cold Spot with almost identical randomness properties
among other low-temperature regions is revealed. By its informative power, Kolmogorov's map
can be complementary to the CMB temperature and polarization sky maps.
ISSN: 0004-6361
DOI: 10.1051/0004-6361/200911625
Record 9 of 499
Author(s): Allahverdyan, AE (Allahverdyan, A. E.); Gevorkian, ZS (Gevorkian, Zh. S.); Hu,
CK (Hu, Chin-Kun); Nieuwenhuizen, TM (Nieuwenhuizen, Th. M.)
Title: How adsorption influences DNA denaturation
Source: PHYSICAL REVIEW E, 79 (3): Art. No. 031903 Part 1 MAR 2009
Abstract: The thermally induced denaturation of DNA in the presence of an attractive solid
surface is studied. The two strands of DNA are modeled via two coupled flexible chains without
volume interactions. If the two strands are adsorbed on the surface, the denaturation phase
transition disappears. Instead, there is a smooth crossover to a weakly naturated state. Our
second conclusion is that even when the interstrand attraction alone is too weak for creating a
naturated state at the given temperature and also when the surface-strand attraction alone is too
weak for creating an adsorbed state, the combined effect of the two attractions can lead to a
naturated and adsorbed state.
ISSN: 1539-3755
Article Number: 031903
DOI: 10.1103/PhysRevE.79.031903
Record 10 of 499
Author(s): Abdullin, S (Abdullin, S.); Abramov, V (Abramov, V.); Acharya, B (Acharya, B.);
Adam, N (Adam, N.); Adams, M (Adams, M.); Adzic, P (Adzic, P.); Akchurin, N (Akchurin,
N.); Akgun, U (Akgun, U.); Albayrak, E (Albayrak, E.); Alemany-Fernandez, R (AlemanyFernandez, R.); Almeida, N (Almeida, N.); Anagnostou, G (Anagnostou, G.); Andelin, D
(Andelin, D.); Anderson, E (Anderson, E. W.); Anfreville, M (Anfreville, M.); Anicin, I (Anicin,
I.); Antchev, G (Antchev, G.); Antunovic, Z (Antunovic, Z.); Arcidiacono, R (Arcidiacono, R.);
Arenton, M (Arenton, M. W.); Auffray, E (Auffray, E.); Argiro, S (Argiro, S.); Askew, A
(Askew, A.); Atramentov, O (Atramentov, O.); Ayan, S (Ayan, S.); Arcidy, M (Arcidy, M.);
Aydin, S (Aydin, S.); Aziz, T (Aziz, T.); Baarmand, M (Baarmand, M.); Babich, K (Babich, K.);
Baccaro, S (Baccaro, S.); Baden, D (Baden, D.); Baffioni, S (Baffioni, S.); Bakirci, MN (Bakirci,
M. N.); Balazs, M (Balazs, M.); Banerjee, S (Banerjee, Sud.); Banerjee, S (Banerjee, Sun.);
Bard, R (Bard, R.); Barge, D (Barge, D.); Barnes, V (Barnes, V.); Barney, D (Barney, D.);
Barone, L (Barone, L.); Bartoloni, A (Bartoloni, A.); Baty, C (Baty, C.); Bawa, H (Bawa, H.);
Baiatian, G (Baiatian, G.); Bandurin, D (Bandurin, D.); Beauceron, S (Beauceron, S.); Bell, KW
(Bell, K. W.); Bencze, G (Bencze, G.); Benetta, R (Benetta, R.); Bercher, M (Bercher, M.); Beri,
S (Beri, S.); Bernet, C (Bernet, C.); Berntzon, L (Berntzon, L.); Berthon, U (Berthon, U.);
Besancon, M (Besancon, M.); Betev, B (Betev, B.); Beuselinck, R (Beuselinck, R.); Bhatnagar,
V (Bhatnagar, V.); Bhatti, A (Bhatti, A.); Biino, C (Biino, C.); Blaha, J (Blaha, J.); Bloch, P
(Bloch, P.); Blyth, S (Blyth, S.); Bodek, A (Bodek, A.); Bornheim, A (Bornheim, A.); Bose, S
(Bose, S.); Bose, T (Bose, T.); Bourotte, J (Bourotte, J.); Brett, AM (Brett, A. M.); Brown, RM
(Brown, R. M.); Britton, D (Britton, D.); Budd, H (Budd, H.); Buehler, M (Buehler, M.);
Burchesky, K (Burchesky, K.); Busson, P (Busson, P.); Camanzi, B (Camanzi, B.); Camporesi, T
(Camporesi, T.); Cankocak, K (Cankocak, K.); Carrell, K (Carrell, K.); Carrera, E (Carrera, E.);
Cartiglia, N (Cartiglia, N.); Cavallari, F (Cavallari, F.); Cerci, S (Cerci, S.); Cerutti, M (Cerutti,
M.); Chang, P (Chang, P.); Chang, YH (Chang, Y. H.); Charlot, C (Charlot, C.); Chen, E (Chen,
E. A.); Chen, W (Chen, W. T.); Chen, Z (Chen, Z.); Chendvankar, S (Chendvankar, S.);
Chipaux, R (Chipaux, R.); Choudhary, BC (Choudhary, B. C.); Choudhury, RK (Choudhury, R.
K.); Chung, Y (Chung, Y.); Clarida, W (Clarida, W.); Cockerill, DJA (Cockerill, D. J. A.);
Combaret, C (Combaret, C.); Conetti, S (Conetti, S.); Cossutti, F (Cossutti, F.); Cox, B (Cox,
B.); Cremaldi, L (Cremaldi, L.); Cushman, P (Cushman, P.); Cussans, D (Cussans, D. G.);
Dafinei, I (Dafinei, I.); Damgov, J (Damgov, J.); Di Calafiori, DRD (Di Calafiori, D. R. Da
Silva); Daskalakis, G (Daskalakis, G.); Davatz, G (Davatz, G.); David, A (David, A.); de
Barbaro, P (de Barbaro, P.); Debbins, P (Debbins, P.); Deiters, K (Deiters, K.); Dejardin, M
(Dejardin, M.); Djordjevic, M (Djordjevic, M.); Deliomeroglu, M (Deliomeroglu, M.); Della
Negra, R (Della Negra, R.); Della Ricca, G (Della Ricca, G.); Del Re, D (Del Re, D.);
Demianov, A (Demianov, A.); De Min, A (De Min, A.); Denegri, D (Denegri, D.); Depasse, P
(Depasse, P.); de Visser, T (de Visser, T.); Descamps, J (Descamps, J.); Deshpande, P
(Deshpande, P. V.); Diaz, J (Diaz, J.); Diemoz, M (Diemoz, M.); Marco, E (Di Marco, E.);
Dimitrov, L (Dimitrov, L.); Dissertori, G (Dissertori, G.); Dittmar, M (Dittmar, M.); Djambazov,
L (Djambazov, L.); Dobrzynski, L (Dobrzynski, L.); Drndarevic, S (Drndarevic, S.); Duboscq,
JE (Duboscq, J. E.); Dugad, S (Dugad, S.); Dumanoglu, I (Dumanoglu, I.); Duru, F (Duru, F.);
Dutta, D (Dutta, D.); Dzelalija, M (Dzelalija, M.); Efthymiopoulos, I (Efthymiopoulos, I.); Elias,
J (Elias, J.); Elliott-Peisert, A (Elliott-Peisert, A.); El Mamouni, H (El Mamouni, H.); Elvira, D
(Elvira, D.); Emeliantchik, I (Emeliantchik, I.); Eno, S (Eno, S.); Ershov, A (Ershov, A.); Erturk,
S (Erturk, S.); Esen, S (Esen, S.); Eskut, E (Eskut, E.); Evangelou, I (Evangelou, I.); Evans, DL
(Evans, D. L.); Fabbro, B (Fabbro, B.); Faure, JL (Faure, J. L.); Fay, J (Fay, J.); Fenyvesi, A
(Fenyvesi, A.); Ferri, F (Ferri, F.); Fisher, W (Fisher, W.); Flower, PS (Flower, P. S.); Franci, D
(Franci, D.); Franzoni, G (Franzoni, G.); Freeman, J (Freeman, J.); Freudenreich, K
(Freudenreich, K.); Funk, W (Funk, W.); Ganjour, S (Ganjour, S.); Gargiulo, C (Gargiulo, C.);
Gascon, S (Gascon, S.); Gataullin, M (Gataullin, M.); Gaultney, V (Gaultney, V.); Gamsizkan, H
(Gamsizkan, H.); Gavrilov, V (Gavrilov, V.); Geerebaert, Y (Geerebaert, Y.); Genchev, V
(Genchev, V.); Gentit, FX (Gentit, F. X.); Gerbaudo, D (Gerbaudo, D.); Gershtein, Y (Gershtein,
Y.); Ghezzi, A (Ghezzi, A.); Ghodgaonkar, MD (Ghodgaonkar, M. D.); Gilly, J (Gilly, J.);
Givernaud, A (Givernaud, A.); Gleyzer, S (Gleyzer, S.); Gninenko, S (Gninenko, S.); Go, A (Go,
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I (Golutvin, I.); Goncharov, P (Goncharov, P.); Gong, D (Gong, D.); Govoni, P (Govoni, P.);
Grant, N (Grant, N.); Gras, P (Gras, P.); Grassi, T (Grassi, T.); Green, D (Green, D.);
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Riveros, LG (Riveros, L. Guevara); Guillaud, J (Guillaud, J. P.); Gurtu, A (Gurtu, A.); Gueler,
AM (Gueler, A. Murat); Gulmez, E (Gulmez, E.); Gumus, K (Gumus, K.); Haelen, T (Haelen,
T.); Hagopian, S (Hagopian, S.); Hagopian, V (Hagopian, V.); Haguenauer, M (Haguenauer,
M.); Halyo, V (Halyo, V.); de Monchenault, GH (de Monchenault, G. Hamel); Hansen, M
(Hansen, M.); Hashemi, M (Hashemi, M.); Hauptman, J (Hauptman, J.); Hazen, E (Hazen, E.);
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(Heltsley, B.); Hill, J (Hill, J. A.); Hintz, W (Hintz, W.); Hirosky, R (Hirosky, R.); Hobson, PR
(Hobson, P. R.); Honma, A (Honma, A.); Hou, GWS (Hou, G. W. S.); Hsiung, Y (Hsiung, Y.);
Hunt, A (Hunt, A.); Husejko, M (Husejko, M.); Ille, B (Ille, B.); Ilyina, N (Ilyina, N.); Imlay, R
(Imlay, R.); Ingram, D (Ingram, D.); Ingram, Q (Ingram, Q.); Isiksal, E (Isiksal, E.); Jarry, P
(Jarry, P.); Jarvis, C (Jarvis, C.); Jeong, C (Jeong, C.); Jessop, C (Jessop, C.); Johnson, K
(Johnson, K.); Jones, J (Jones, J.); Jovanovic, D (Jovanovic, D.); Kaadze, K (Kaadze, K.);
Kachanov, V (Kachanov, V.); Kaftanov, V (Kaftanov, V.); Kailas, S (Kailas, S.); Kalagin, V
(Kalagin, V.); Kalinin, A (Kalinin, A.); Kalmani, S (Kalmani, S.); Karmgard, D (Karmgard, D.);
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Kayis-Topaksu, A (Kayis-Topaksu, A.); Kellogg, R (Kellogg, R.); Kennedy, B (Kennedy, B.
W.); Khmelnikov, A (Khmelnikov, A.); Kim, H (Kim, H.); Kisselevich, I (Kisselevich, I.);
Kloukinas, K (Kloukinas, K.); Kodolova, O (Kodolova, O.); Kohli, J (Kohli, J.); Kokkas, P
(Kokkas, P.); Kolberg, T (Kolberg, T.); Kolossov, V (Kolossov, V.); Korablev, A (Korablev,
A.); Korneev, Y (Korneev, Y.); Kosarev, I (Kosarev, I.); Kramer, L (Kramer, L.); Krasnikov, N
(Krasnikov, N.); Krinitsyn, A (Krinitsyn, A.); Krokhotin, A (Krokhotin, A.); Krpic, D (Krpic,
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(Kuo, C. M.); Kurt, P (Kurt, P.); Kyberd, P (Kyberd, P.); Kyriakis, A (Kyriakis, A.); Laasanen,
A (Laasanen, A.); Ladygin, V (Ladygin, V.); Laird, E (Laird, E.); Landsberg, G (Landsberg, G.);
Laszlo, A (Laszlo, A.); Lawlor, C (Lawlor, C.); Lazic, D (Lazic, D.); Lebeau, M (Lebeau, M.);
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S. -W.); Leshev, G (Leshev, G.); Lethuillier, M (Lethuillier, M.); Levchuk, L (Levchuk, L.); Lin,
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M (Marone, M.); Martinez, G (Martinez, G.); Mathez, H (Mathez, H.); Matveev, V (Matveev,
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Mescheryakov, G (Mescheryakov, G.); Mestvirishvili, A (Mestvirishvili, A.); Mikhailin, V
(Mikhailin, V.); Milenovic, P (Milenovic, P.); Miller, M (Miller, M.); Milleret, G (Milleret, G.);
Mine, P (Mine, P.); Moeller, A (Moeller, A.); Mohammadi-Najafabadi, M (MohammadiNajafabadi, M.); Mohanty, A (Mohanty, A. K.); Moissenz, P (Moissenz, P.); Mondal, N
(Mondal, N.); Moortgat, F (Moortgat, F.); Mossolov, V (Mossolov, V.); Mur, M (Mur, M.);
Musella, P (Musella, P.); Musienko, Y (Musienko, Y.); Nagaraj, P (Nagaraj, P.); Nardulli, A
(Nardulli, A.); Nash, J (Nash, J.); Nedelec, P (Nedelec, P.); Negri, P (Negri, P.); Newman, HB
(Newman, H. B.); Nikitenko, A (Nikitenko, A.); Norbeck, E (Norbeck, E.); Nessi-Tedaldi, F
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Onengut, G (Onengut, G.); Organtini, G (Organtini, G.); Orimoto, T (Orimoto, T.); Ozkan, C
(Ozkan, C.); Ozkurt, H (Ozkurt, H.); Ozkorucuklu, S (Ozkorucuklu, S.); Ozok, F (Ozok, F.);
Paganoni, M (Paganoni, M.); Paganini, P (Paganini, P.); Paktinat, S (Paktinat, S.); Pal, A (Pal,
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(Patterson, J. R.); Pauss, F (Pauss, F.); Penzo, A (Penzo, A.); Petrakou, E (Petrakou, E.);
Petrushanko, S (Petrushanko, S.); Petrosyan, A (Petrosyan, A.); Phillips, DG (Phillips, D. G., II);
Pikalov, V (Pikalov, V.); Piperov, S (Piperov, S.); Piroue, P (Piroue, P.); Podrasky, V (Podrasky,
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Pullia, A (Pullia, A.); Punz, T (Punz, T.); Puzovic, J (Puzovic, J.); Qian, W (Qian, W.); Ragazzi,
S (Ragazzi, S.); Rahatlou, S (Rahatlou, S.); Ralich, RM (Ralich, R. M.); Rande, J (Rande, J.);
Razis, PA (Razis, P. A.); Redaelli, N (Redaelli, N.); Reddy, L (Reddy, L.); Reidy, J (Reidy, J.);
Renker, D (Renker, D.); Reucroft, S (Reucroft, S.); Reymond, JM (Reymond, J. M.); Ribeiro, P
(Ribeiro, P.); Roeser, U (Roeser, U.); Rogalev, E (Rogalev, E.); Rogan, C (Rogan, C.); Roh, Y
(Roh, Y.); Rohlf, J (Rohlf, J.); Romanteau, T (Romanteau, T.); Rondeaux, F (Rondeaux, F.);
Ronquest, M (Ronquest, M.); Ronzhin, A (Ronzhin, A.); Rosowsky, A (Rosowsky, A.); Rovelli,
C (Rovelli, C.); Ruchti, R (Ruchti, R.); Rumerio, P (Rumerio, P.); Rusack, R (Rusack, R.);
Rusakov, SV (Rusakov, S. V.); Ryan, MJ (Ryan, M. J.); Ryazanov, A (Ryazanov, A.); Safronov,
G (Safronov, G.); Sala, L (Sala, L.); Salerno, R (Salerno, R.); Sanders, DA (Sanders, D. A.);
Santanastasio, F (Santanastasio, F.); Sanzeni, C (Sanzeni, C.); Sarycheva, L (Sarycheva, L.);
Satyanarayana, B (Satyanarayana, B.); Schinzel, D (Schinzel, D.); Schmidt, I (Schmidt, I.); Seez,
C (Seez, C.); Sekmen, S (Sekmen, S.); Semenov, S (Semenov, S.); Senchishin, V (Senchishin,
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Shepherd-Themistocleous, C (Shepherd-Themistocleous, C. H.); Siamitros, C (Siamitros, C.);
Sillou, D (Sillou, D.); Singh, JB (Singh, J. B.); Singovsky, A (Singovsky, A.); Sirois, Y (Sirois,
Y.); Sirunyan, A (Sirunyan, A.); Silva, J (Silva, J.); Silva, P (Silva, P.); Skuja, A (Skuja, A.);
Sharma, S (Sharma, S.); Sherwood, B (Sherwood, B.); Shiu, J (Shiu, J. G.); Shivpuri, RK
(Shivpuri, R. K.); Shukla, P (Shukla, P.); Shumeiko, N (Shumeiko, N.); Smirnov, V (Smirnov,
V.); Smith, BJ (Smith, B. J.); Smith, VJ (Smith, V. J.); Sogut, K (Sogut, K.); Sonmez, N
(Sonmez, N.); Sorokin, P (Sorokin, P.); Spezziga, M (Spezziga, M.); Sproston, M (Sproston,
M.); Stefanovich, R (Stefanovich, R.); Stockli, F (Stoeckli, F.); Stolin, V (Stolin, V.); Sudhakar,
K (Sudhakar, K.); Sulak, L (Sulak, L.); Suter, H (Suter, H.); Suzuki, I (Suzuki, I.); Swain, J
(Swain, J.); de Fatis, TT (de Fatis, T. Tabarelli); Talov, V (Talov, V.); Takahashi, M (Takahashi,
M.); Tcheremoukhine, A (Tcheremoukhine, A.); Teller, O (Teller, O.); Teplov, K (Teplov, K.);
Theofilatos, K (Theofilatos, K.); Thiebaux, C (Thiebaux, C.); Thomas, R (Thomas, R.); Timciuc,
V (Timciuc, V.); Timlin, C (Timlin, C.); Titov, M (Titov, M.); Tobias, A (Tobias, A.); Tonwar,
S (Tonwar, S.); Topakli, H (Topakli, H.); Topkar, A (Topkar, A.); Triantis, F (Triantis, F. A.);
Troshin, S (Troshin, S.); Tully, C (Tully, C.); Turchanovich, L (Turchanovich, L.); Tyurin, N
(Tyurin, N.); Ueno, K (Ueno, K.); Ulyanov, A (Ulyanov, A.); Uzunian, A (Uzunian, A.); Vanini,
A (Vanini, A.); Vankov, I (Vankov, I.); Vardanyan, I (Vardanyan, I.); Varela, F (Varela, F.);
Varela, J (Varela, J.); Vasil'ev, A (Vasil'ev, A.); Velasco, M (Velasco, M.); Vergili, M (Vergili,
M.); Verma, P (Verma, P.); Verrecchia, P (Verrecchia, P.); Vesztergombi, G (Vesztergombi, G.);
Veverka, J (Veverka, J.); Vichoudis, P (Vichoudis, P.); Vidal, R (Vidal, R.); Virdee, T (Virdee,
T.); Vishnevskiy, A (Vishnevskiy, A.); Vlassov, E (Vlassov, E.); Vodopiyanov, I (Vodopiyanov,
I.); Volobouev, I (Volobouev, I.); Volkov, A (Volkov, A.); Volodko, A (Volodko, A.); Von
Gunten, HP (Von Gunten, H. P.); Wang, L (Wang, L.); Wang, M (Wang, M.); Wardrope, D
(Wardrope, D.); Weber, M (Weber, M.); Weng, J (Weng, J.); Werner, J (Werner, J.); Wetstein,
M (Wetstein, M.); Winn, D (Winn, D.); Wigmans, R (Wigmans, R.); Williams, J (Williams, J.
H.); Whitmore, J (Whitmore, J.); Won, S (Won, S.); Wu, S (Wu, S. X.); Yang, Y (Yang, Y.);
Yaselli, I (Yaselli, I.); Yazgan, E (Yazgan, E.); Yetkin, T (Yetkin, T.); Yohay, R (Yohay, R.);
Zabi, A (Zabi, A.); Zalan, P (Zalan, P.); Zamiatin, N (Zamiatin, N.); Zarubin, A (Zarubin, A.);
Zelepoukine, S (Zelepoukine, S.); Zeyrek, M (Zeyrek, M.); Zhang, J (Zhang, J.); Zhang, LY
(Zhang, L. Y.); Zhu, K (Zhu, K.)
Title: The CMS barrel calorimeter response to particle beams from 2 to 350 GeV/c
Source: EUROPEAN PHYSICAL JOURNAL C, 60 (3): 359-373 APR 2009
Abstract: The response of the CMS barrel calorimeter (electromagnetic plus hadronic) to
hadrons, electrons and muons over a wide momentum range from 2 to 350 GeV/c has been
measured. To our knowledge, this is the widest range of momenta in which any calorimeter
system has been studied. These tests, carried out at the H2 beam-line at CERN, provide a wealth
of information, especially at low energies. The analysis of the differences in calorimeter response
to charged pions, kaons, protons and antiprotons and a detailed discussion of the underlying
phenomena are presented. We also show techniques that apply corrections to the signals from the
considerably different electromagnetic (EB) and hadronic (HB) barrel calorimeters in
reconstructing the energies of hadrons. Above 5 GeV/c, these corrections improve the energy
resolution of the combined system where the stochastic term equals 84.7 +/- 1.6% and the
constant term is 7.4 +/- 0.8%. The corrected mean response remains constant within 1.3% rms.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-009-0959-5
Record 11 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); Anton, G
(Anton, G.); de Almeida, UB (de Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.);
Becherini, Y (Becherini, Y.); Behera, B (Behera, B.); Benbow, W (Benbow, W.); Bernlohr, K
(Bernloehr, K.); Boisson, C (Boisson, C.); Bochow, A (Bochow, A.); Borrel, V (Borrel, V.);
Brion, E (Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik,
T (Bulik, T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Chadwick, PM
(Chadwick, P. M.); Charbonnier, A (Charbonnier, A.); Chaves, RCG (Chaves, R. C. G.);
Cheesebrough, A (Cheesebrough, A.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson,
A. C.); Coignet, G (Coignet, G.); Dalton, M (Dalton, M.); Daniel, MK (Daniel, M. K.); Davids,
ID (Davids, I. D.); Degrange, B (Degrange, B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H.
J.); Djannati-Atai, A (Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L.
O'C.); Dubois, F (Dubois, F.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.);
Egberts, K (Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat,
P.); Farnier, C (Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A
(Foerster, A.); Fontaine, G (Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.);
Gallant, YA (Gallant, Y. A.); Gerard, L (Gerard, L.); Giebels, B (Giebels, B.); Glicenstein, JF
(Glicenstein, J. -F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Gohring, D (Goehring, D.);
Hauser, D (Hauser, D.); Hauser, M (Hauser, M.); Heinz, S (Heinz, S.); Heinzelmann, G
(Heinzelmann, G.); Henri, G (Henri, G.); Hermann, G (Hermann, G.); Hinton, JA (Hinton, J.
A.); Hoffmann, A (Hoffmann, A.); Hofmann, W (Hofmann, W.); Holleran, M (Holleran, M.);
Hoppe, S (Hoppe, S.); Horns, D (Horns, D.); Jacholkowska, A (Jacholkowska, A.); de Jager, OC
(de Jager, O. C.); Jahn, C (Jahn, C.); Jung, I (Jung, I.); Katarzynsky, K (Katarzynsky, K.); Katz,
U (Katz, U.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M
(Kerschhaggl, M.); Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D (Keogh,
D.); Kluzniak, W (Kluzniak, W.); Kneiske, T (Kneiske, T.); Komin, N (Komin, Nu.); Kosack, K
(Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); Lenain, JP (Lenain, J. -P.);
Lohse, T (Lohse, T.); Marandon, V (Marandon, V.); Martin, JM (Martin, J. M.); Martineau-
Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Maurin, D (Maurin, D.);
McComb, TJL (McComb, T. J. L.); Medina, MC (Medina, M. C.); Moderski, R (Moderski, R.);
Moulin, E (Moulin, E.); Naumann-Godo, M (Naumann-Godo, M.); de Naurois, M (de Naurois,
M.); Nedbal, D (Nedbal, D.); Nekrassov, D (Nekrassov, D.); Niemiec, J (Niemiec, J.); Nolan, SJ
(Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JF (Olive, J. -F.); Wilhelmi, ED (Wilhelmi, E. de Ona);
Orford, KJ (Orford, K. J.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.); Arribas, MP
(Arribas, M. Paz); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci,
P. -O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A
(Quirrenbach, A.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM
(Rayner, S. M.); Renaud, M (Renaud, M.); Rieger, F (Rieger, F.); Ripken, J (Ripken, J.); Rob, L
(Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Rudak, B (Rudak, B.);
Rulten, CB (Rulten, C. B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A
(Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R
(Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg, S.); Schwemmer,
S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sikora, M (Sikora, M.); Skilton, JL (Skilton, J. L.);
Sol, H (Sol, H.); Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.); Steenkamp, R
(Steenkamp, R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Szostek, A (Szostek,
A.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); Tibolla, O
(Tibolla, O.); Tluczykont, M (Tluczykont, M.); van Eldik, C (van Eldik, C.); Vasileiadis, G
(Vasileiadis, G.); Venter, C (Venter, C.); Venter, L (Venter, L.); Vialle, JP (Vialle, J. P.);
Vincent, P (Vincent, P.); Vink, J (Vink, J.); Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.);
Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA
(Zdziarski, A. A.); Zech, A (Zech, A.)
Title: DISCOVERY OF VERY HIGH ENERGY gamma-RAY EMISSION FROM
CENTAURUS A WITH HESS
Source: ASTROPHYSICAL JOURNAL LETTERS, 695 (1): L40-L44 APR 10 2009
Abstract: We report the discovery of faint very high energy (VHE; E > 100 GeV) gamma-ray
emission from the radio galaxy Centaurus A in observations performed with the High Energy
Stereoscopic System (H.E.S.S.) experiment, an imaging atmospheric Cherenkov telescope array
consisting of four telescopes located in Namibia. Centaurus A has been observed for more than
120 hr. A signal with a statistical significance of 5.0 sigma is detected from the region including
the radio core and the inner kpc jets. The integral flux above an energy threshold of similar to
250 GeV is measured to be 0.8% of the flux of the Crab Nebula (apparent luminosity: L(> 250
GeV) approximate to 2.6 x 1039 erg s(-1), adopting a distance of 3.8 Mpc). The spectrum can be
described by a power law with a photon index of 2.7 +/- 0.5(stat) +/- 0.2(sys). No significant flux
variability is detected in the data set. However, the low flux only allows detection of variability
on the timescale of days to flux increments above a factor of similar to 15-20 (3 sigma and 4
sigma, respectively). The discovery of VHE gamma-ray emission from Centaurus A reveals
particle acceleration in the source to > TeV energies and, together with M 87, establishes radio
galaxies as a class of VHE emitters.
DOI: 10.1088/0004-637X/695/1/L40
Record 12 of 499
Author(s): Battaglieri, M (Battaglieri, M.); De Vita, R (De Vita, R.); Szczepaniak, AP
(Szczepaniak, A. P.); Adhikari, KP (Adhikari, K. P.); Aghasyan, M (Aghasyan, M.); Amaryan,
MJ (Amaryan, M. J.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.);
Asryan, G (Asryan, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie,
N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Batourine, V (Batourine, V.);
Bedlinskiy, I (Bedlinskiy, I.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL
(Berman, B. L.); Bibrzycki, L (Bibrzycki, L.); Biselli, AS (Biselli, A. S.); Bookwalter, C
(Bookwalter, C.); Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R
(Bradford, R.); Branford, D (Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks, WK (Brooks,
W. K.); Bltmann, S (Bltmann, S.); Burkert, VD (Burkert, V. D.); Calarco, JR (Calarco, J. R.);
Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Chen, S
(Chen, S.); Cheng, L (Cheng, L.); Clinton, E (Clinton, E.); Cole, PL (Cole, P. L.); Collins, P
(Collins, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Crede, V (Crede, V.);
Cummings, JP (Cummings, J. P.); Dale, D (Dale, D.); Daniel, A (Daniel, A.); Dashyan, N
(Dashyan, N.); De Masi, R (De Masi, R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV
(Degtyarenko, P. V.); Deur, A (Deur, A.); Dhamija, S (Dhamija, S.); Dharmawardane, KV
(Dharmawardane, K. V.); Dickson, R (Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge,
G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.);
Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L
(El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fedotov, G (Fedotov,
G.); Fersch, R (Fersch, R.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Gabrielyan, MY
(Gabrielyan, M. Y.); Gan, L (Gan, L.); GarOon, M (GarOon, M.); Gasparian, A (Gasparian, A.);
Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.);
Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Glamazdin, O (Glamazdin, O.);
Goett, J (Goett, J.); Goetz, JT (Goetz, J. T.); Gohn, W (Gohn, W.); Golovatch, E (Golovatch, E.);
Gordon, CIO (Gordon, C. I. O.); Gothe, RW (Gothe, R. W.); Graham, L (Graham, L.); Griffioen,
KA (Griffioen, K. A.); Guidal, M (Guidal, M.); Guler, N (Guler, N.); Guo, L (Guo, L.);
Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H
(Hakobyan, H.); Hakobyan, RS (Hakobyan, R. S.); Hanretty, C (Hanretty, C.); Hardie, J (Hardie,
J.); Hassall, N (Hassall, N.); Heddle, D (Heddle, D.); Hersman, FW (Hersman, F. W.); Hicks, K
(Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde, CE (Hyde, C. E.);
Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL
(Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins, D.); Jo, HS (Jo, H. S.); Johnstone, JR
(Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.); Kageya, T (Kageya, T.);
Kalantarians, N (Kalantarians, N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J. D.); Khandaker,
M (Khandaker, M.); Khetarpal, P (Khetarpal, P.); Kim, W (Kim, W.); Klein, A (Klein, A.);
Klein, FJ (Klein, F. J.); Klimenko, AV (Klimenko, A. V.); Konczykowski, P (Konczykowski,
P.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L. H.); Kubarovsky,
V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S.
V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.);
Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Lee, T (Lee, T.); Lesniak, L
(Lesniak, L.); Li, J (Li, Ji); Livingston, K (Livingston, K.); Lowry, M (Lowry, M.); Lu, HY (Lu,
H. Y.); MacCormick, M (MacCormick, M.); Malace, S (Malace, S.); Markov, N (Markov, N.);
Mattione, P (Mattione, P.); McCracken, ME (McCracken, M. E.); McKinnon, B (McKinnon,
B.); Mecking, BA (Mecking, B. A.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M.
D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mineeva, T
(Mineeva, T.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen,
R.); Mochalov, V (Mochalov, V.); Mokeev, V (Mokeev, V.); Moreno, B (Moreno, B.); Moriya,
K (Moriya, K.); Morrow, SA (Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Munevar, E
(Munevar, E.); Mutchler, GS (Mutchler, G. S.); Nadel-Turonski, P (Nadel-Turonski, P.);
Nakagawa, I (Nakagawa, I.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.);
Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.);
Niroula, MR (Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko,
M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Park, S (Park, S.);
Pasyuk, E (Pasyuk, E.); Paris, M (Paris, M.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S.
Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko,
O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.);
Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco,
G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Rosner, G (Rosner, G.);
Rossi, P (Rossi, P.); Sabati, F (Sabati, F.); Saini, MS (Saini, M. S.); Salamanca, J (Salamanca,
J.); Salgado, C (Salgado, C.); Sandorfi, A (Sandorfi, A.); Santoro, JP (Santoro, J. P.);
Sapunenko, V (Sapunenko, V.); Schott, D (Schott, D.); Schumacher, RA (Schumacher, R. A.);
Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.);
Shvedunov, NV (Shvedunov, N. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober,
DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Starostin, A (Starostin, A.); Stavinsky, A (Stavinsky,
A.); Stepanyan, S (Stepanyan, S.); Stepanyan, SS (Stepanyan, S. S.); Stokes, BE (Stokes, B. E.);
Stoler, P (Stoler, P.); Stopani, KA (Stopani, K. A.); Strakovsky, II (Strakovsky, I. I.); Strauch, S
(Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D. J.); Teymurazyan, A
(Teymurazyan, A.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L
(Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.);
Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Wei, X (Wei, X.); Weinstein, LB
(Weinstein, L. B.); Weygand, DP (Weygand, D. P.); Williams, M (Williams, M.); Wolin, E
(Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yurov, M (Yurov,
M.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Measurement of Direct f(0)(980) Photoproduction on the Proton
Source: PHYSICAL REVIEW LETTERS, 102 (10): Art. No. 102001 MAR 13 2009
Abstract: We report on the results of the first measurement of exclusive f(0)(980) meson
photoproduction on protons for E-gamma=3.0-3.8 GeV and -t=0.4-1.0 GeV2. Data were
collected with the CLAS detector at the Thomas Jefferson National Accelerator Facility. The
resonance was detected via its decay in the pi(+)pi(-) channel by performing a partial wave
analysis of the reaction gamma p -> p pi(+)pi(-). Clear evidence of the f(0)(980) meson was
found in the interference between P and S waves at M-pi(+)pi(-)similar to 1 GeV. The S-wave
differential cross section integrated in the mass range of the f(0)(980) was found to be a factor of
about 50 smaller than the cross section for the rho meson. This is the first time the f(0)(980)
meson has been measured in a photoproduction experiment.
ISSN: 0031-9007
DOI: 10.1103/PhysRevLett.102.102001
Record 13 of 499
Author(s): Nozar, M (Nozar, M.); Salgado, C (Salgado, C.); Weygand, DP (Weygand, D. P.);
Guo, L (Guo, L.); Adams, G (Adams, G.); Li, J (Li, Ji); Eugenio, P (Eugenio, P.); Amaryan, MJ
(Amaryan, M. J.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan, G.); Avakian, H
(Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.);
Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Battaglieri, M (Battaglieri, M.);
Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M (Bellis, M.);
Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.);
Blaszczyk, L (Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bouchigny, S (Bouchigny, S.);
Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.); Branford, D (Branford, D.); Briscoe,
WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.); Bultmann, S (Bueltmann, S.); Burkert, VD
(Burkert, V. D.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL
(Careccia, S. L.); Carman, DS (Carman, D. S.); Carnahan, B (Carnahan, B.); Casey, L (Casey,
L.); Cazes, A (Cazes, A.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.);
Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Cords, D (Cords, D.); Corvisiero, P
(Corvisiero, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Crede, V (Crede, V.);
Cummings, JP (Cummings, J. P.); Dale, D (Dale, D.); Dashyan, N (Dashyan, N.); De Masi, R
(De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV
(Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Deur, A (Deur, A.);
Dharmawardane, KV (Dharmawardane, K. V.); Dhuga, KS (Dhuga, K. S.); Dickson, R
(Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge, G. E.); Doughty, D (Doughty, D.);
Dugger, M (Dugger, M.); Dytman, S (Dytman, S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H
(Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri,
L.); Fatemi, R (Fatemi, R.); Fedotov, G (Fedotov, G.); Feuerbach, RJ (Feuerbach, R. J.); Forest,
TA (Forest, T. A.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.); Garcon, M (Garcon, M.);
Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.);
Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gothe,
RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.); Guidal, M (Guidal, M.); Guillo, M
(Guillo, M.); Guler, N (Guler, N.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.);
Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hanretty, C (Hanretty, C.); Hardie, J
(Hardie, J.); Hassall, N (Hassall, N.); Heddle, D (Heddle, D.); Hersman, FW (Hersman, F. W.);
Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde-Wright, CE
(Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS
(Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins, D.);
Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst, H.
G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker,
M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Kossov, M (Kossov, M.);
Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J
(Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov,
V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.);
Lawrence, D (Lawrence, D.); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick,
M (MacCormick, M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McAleer, S
(McAleer, S.); McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA
(Mecking, B. A.); Mehrabyan, S (Mehrabyan, S.); Mestayer, MD (Mestayer, M. D.); Meyer, CA
(Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mirazita, M (Mirazita, M.);
Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Moreno, B (Moreno, B.); Moriya, K
(Moriya, K.); Morrow, SA (Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Mueller, J
(Mueller, J.); Munevar, E (Munevar, E.); Mutchler, GS (Mutchler, G. S.); Nadel-Turonski, P
(Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.); Niculescu, G
(Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR
(Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); O'Rielly, GV (O'Rielly, G. V.); Osipenko, M
(Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.);
Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Philips, SA (Philips, S. A.);
Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O
(Pogorelko, O.); Polli, E (Polli, E.); Popa, I (Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom,
BM (Preedom, B. M.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D
(Protopopescu, D.); Qin, LM (Qin, L. M.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.);
Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Ronchetti, F
(Ronchetti, F.); Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Rubin, PD (Rubin, P. D.); Sabatie,
F (Sabatie, F.); Salamanca, J (Salamanca, J.); Santoro, JP (Santoro, J. P.); Sapunenko, V
(Sapunenko, V.); Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian,
YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov, N. V.); Skabelin,
AV (Skabelin, A. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D.
I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.);
Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II
(Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D.
J.); Thoma, U (Thoma, U.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.);
Todor, L (Todor, L.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV
(Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.); Williams, M
(Williams, M.); Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A
(Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW
(Zhao, Z. W.)
Title: Search for the Photoexcitation of Exotic Mesons in the pi(+)pi(+)pi(-) System
Source: PHYSICAL REVIEW LETTERS, 102 (10): Art. No. 102002 MAR 13 2009
Abstract: A search for exotic mesons in the pi(+)pi(+)pi(-) system photoproduced by the charge
exchange reaction gamma p ->pi(+)pi(+)pi(-)(n) was carried out by the CLAS Collaboration at
Jefferson Lab. A tagged-photon beam with energies in the 4.8 to 5.4 GeV range, produced
through bremsstrahlung from a 5.744 GeV electron beam, was incident on a liquid-hydrogen
target. A partial wave analysis was performed on a sample of 83 000 events, the highest such
statistics to date in this reaction at these energies. The main objective of this study was to look
for the photoproduction of an exotic J(PC)=1(-+) resonant state in the 1 to 2 GeV mass range.
Our partial wave analysis shows production of the a(2)(1320) and the pi(2)(1670) mesons, but no
evidence for the a(1)(1260), nor the pi(1)(1600) exotic state at the expected levels. An upper
limit of 13.5 nb is determined for the exotic pi(1)(1600) cross section, less than 2% of the
a(2)(1320) production.
ISSN: 0031-9007
Record 14 of 499
(Astvatsatourov, A.); Bacchetta, A (Bacchetta, A.); Backovic, S (Backovic, S.); Baghdasaryan,
A (Baghdasaryan, A.); Baranov, R (Baranov, R.); Barrelet, E (Barrelet, E.); Bartel, W (Bartel,
W.); Beckingham, M (Beckingham, M.); Begzsuren, K (Begzsuren, K.); Behnk, O (Behnk, O.);
Belousov, A (Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO
(Boenig, M. -O.); Boudry, V (Boudry, V.); Bozovic-Jelisavcic, I (Bozovic-Jelisavcic, I.);
Bracinik, J (Bracinik, J.); Brandt, G (Brandt, G.); Brinkmann, M (Brinkmann, M.); Brisson, V
(Brisson, V.); Bruncko, D (Bruncko, D.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G
(Buschhorn, G.); Bystritskaya, L (Bystritskaya, L.); Campbell, AJ (Campbell, A. J.); Avila, KBC
(Avila, K. B. Cantun); Cassol-Brunner, F (Cassol-Brunner, F.); Cerny, K (Cerny, K.); Cerny, V
(Cerny, V.); Chekelian, V (Chekelian, V.); Cholewa, A (Cholewa, A.); Contreras, JG (Contreras,
J. G.); Coughlan, JA (Coughlan, J. A.); Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton,
JB (Dainton, J. B.); Daum, K (Daum, K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.);
Delcourt, B (Delcourt, B.); Del Degan, M (Del Degan, M.); Delvax, J (Delvax, J.); De Roeck, A
(De Roeck, A.); De Wolf, EA (De Wolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V
(Dodonov, V.); Dossanov, A (Dossanov, A.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.);
Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.);
Essenov, S (Essenov, S.); Falkiewicz, A (Falkiewicz, A.); Faulkner, PJW (Faulkner, P. J. W.);
Favart, L (Favart, L.); Fedotov, A (Fedotov, A.); Felst, R (Felst, R.); Feltesse, J (Feltesse, J.);
Ferencei, J (Ferencei, J.); Finke, L (Finke, L.); Fleischer, M (Fleischer, M.); Fomenko, A
(Fomenko, A.); Gabathuler, E (Gabathuler, E.); Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan,
S.); Glazov, A (Glazov, A.); Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich, L.); Goettlich, M
(Goettlich, M.); Gogitidze, N (Gogitidze, N.); Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab,
(Helebrant, C.); Henderson, RCW (Henderson, R. C. W.); Henschel, H (Henschel, H.); Herrera,
G (Herrera, G.); Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D
(Hoffmann, D.); Horisberger, R (Horisberger, R.); Hovhannisyan, A (Hovhannisyan, A.); Hreus,
T (Hreus, T.); Jacquet, M (Jacquet, M.); Janssen, ME (Janssen, M. E.); Janssen, X (Janssen, X.);
Jemanov, V (Jemanov, V.); Jonsson, L (Jonsson, L.); Johnson, DP (Johnson, D. P.); Jung, AW
(Jung, A. W.); Jung, H (Jung, H.); Kapichine, M (Kapichine, M.); Katzy, J (Katzy, J.); Kenyon,
IR (Kenyon, I. R.); Kiesling, C (Kiesling, C.); Klein, M (Klein, M.); Kleinwort, C (Kleinwort,
C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Kogler,
R (Kogler, R.); Korbel, V (Korbel, V.); Kostka, P (Kostka, P.); Kraemer, M (Kraemer, M.);
Krastev, K (Krastev, K.); Kretzschmar, J (Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya,
A.); Kruger, K (Krueger, K.); Kutak, K (Kutak, K.); Landon, MPJ (Landon, M. P. J.); Lange, W
(Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, R (Laycock, R.); Lebedev,
A (Lebedev, A.); Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann, V.); Levonian,
S (Levonian, S.); Li, G (Li, G.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.);
List, J (List, J.); Loktionova, N (Loktionova, N.); Lopez-Fernandez, R (Lopez-Fernandez, R.);
Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.);
Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.); Marti,
L (Marti, Ll.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta,
A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer,
H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika,
I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris,
J. V.); Mozer, MU (Mozer, M. U.); Mudrinic, M (Mudrinic, M.); Muller, K (Mueller, K.);
Murin, R (Murin, R.); Nankov, K (Nankov, K.); Naroska, B (Naroska, B.); Naumann, T
Pejchal, O (Pejchal, O.); Peng, H (Peng, H.); Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.);
Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.);
Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Radescu, V (Radescu, V.);
Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Raspiareza, A (Raspiareza, A.);
Ravdandorj, T (Ravdandorj, T.); Reimer, R (Reimer, R.); Rizvi, E (Rizvi, E.); Robmann, P
(Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen, R.); Rostovtsev, A (Rostovtsev,
A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Ruiz Tabasco, J. E.); Rurikova, Z (Rurikova, Z.);
Rusakov, S (Rusakov, S.); Salek, D (Salek, D.); Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey,
D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S
(Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoening, A (Schoening,
A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN
(Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.); Shushkevich,
S (Shushkevich, S.); Sloan, T (Sloan, T.); Smijanic, I (Smijanic, I.); Smirnov, R (Smirnov, R.);
Soloviev, Y (Soloviev, Y.); Sopicki, R (Sopicki, R.); South, D (South, D.); Spaskov, V
(Spaskov, V.); Specka, A (Specka, A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.);
Stella, B (Stella, B.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora,
T.); Tchoulakov, V (Tchoulakov, V.); Thompson, G (Thompson, G.); Thompson, PD
D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, R (Truoel, R.); Tsakov, I (Tsakov, I.);
Tseepeldorj, B (Tseepeldorj, B.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E
(Tzamariudaki, E.); Urban, K (Urban, K.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.);
Van Mechelen, R (Van Mechelen, R.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik,
Y.); Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.); Wegener, D (Wegener,
D.); Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.); Wunsch, E (Wuensch, E.); Yeganov,
V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov,
A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T
(Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Group Author(s): H1 Collaboration
Title: Measurement of diffractive scattering of photons with large momentum transfer at HERA
Source: PHYSICS LETTERS B, 672 (3): 219-226 FEB 23 2009
Abstract: The first measurement of diffractive scattering of quasi-real photons with large
momentum transfer gamma p -> gamma Y, where Y is the proton dissociative system, is made
using the H1 detector at HERA. The measurement is performed for initial photon virtualities
Q(2) < 0.01 GeV2. Single differential cross sections are Measured as a function of W, the
incident photon-proton centre of mass energy, and t, the square of the four-momentum
transferred at the proton vertex, in the range 175 < W < 247 GeV and 4 < |t| < 36 GeV2. The W
dependence is well described by a model based on perturbative QCD using a leading logarithmic
approximation of the BFKL evolution. The measured |t| dependence is harder than that predicted
by the model and those observed in exclusive vector meson production. (C) 2009 Published by
Elsevier B.V.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2009.01.019
Record 15 of 499
Barrelet, E (Barrelet, E.); Bartel, W (Bartel, W.); Begzsuren, K (Begzsuren, K.); Behnke, O
(Behnke, O.); Belousov, A (Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.);
Boudry, V (Boudry, V.); Bozovic-Jelisavcic, I (Bozovic-Jelisavcic, I.); Bracinik, J (Bracinik, J.);
Brandt, G (Brandt, G.); Brinkmann, M (Brinkmann, M.); Brisson, V (Brisson, V.); Bruncko, D
(Bruncko, D.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G (Buschhorn, G.); Bystritskaya, L
(Bystritskaya, L.); Campbell, AJ (Campbell, A. J.); Avila, KBC (Cantun Avila, K. B.); CassolBrunner, F (Cassol-Brunner, F.); Cerny, K (Cerny, K.); Cerny, V (Cerny, V.); Chekelian, V
(Chekelian, V.); Cholewa, A (Cholewa, A.); Contreras, JG (Contreras, J. G.); Coughlan, JA
(Coughlan, J. A.); Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton, JB (Dainton, J. B.);
Daum, K (Daum, K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.);
Del Degan, M (Del Degan, M.); Delvax, J (Delvax, J.); De Roeck, A (De Roeck, A.); De Wolf,
EA (De Wolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dossanov, A
(Dossanov, A.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko,
V.); Egli, S (Egli, S.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Falkiewicz, A (Falkiewicz,
A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A (Fedotov, A.); Felst,
R (Felst, R.); Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.); Fischer, DJ (Fischer, D. -J.);
Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Gabathuler, E (Gabathuler, E.);
Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Glazov, A (Glazov, A.); Glushkov, I
(Glushkov, I.); Goerlich, L (Goerlich, L.); Gogitidze, N (Gogitidze, N.); Gouzevitch, M
(Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Grell, BR (Grell, B. R.);
Grindhammer, G (Grindhammer, G.); Habib, S (Habib, S.); Haidt, D (Haidt, D.); Hansson, M
(Hansson, M.); Helebrant, C (Helebrant, C.); Henderson, RCW (Henderson, R. C. W.);
Hennekemper, E (Hennekemper, E.); Henschel, H (Henschel, H.); Herbst, M (Herbst, M.);
Herrera, G (Herrera, G.); Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.);
Hoffmann, D (Hoffmann, D.); Horisberger, R (Horisberger, R.); Hreus, T (Hreus, T.); Jacquet,
M (Jacquet, M.); Janssen, ME (Janssen, M. E.); Janssen, X (Janssen, X.); Jemanov, V (Jemanov,
V.); Jonsson, L (Joensson, L.); Jung, AW (Jung, A. W.); Jung, H (Jung, H.); Kapichine, M
(Kapichine, M.); Katzy, J (Katzy, J.); Kenyon, IR (Kenyon, I. R.); Kiesling, C (Kiesling, C.);
Klein, M (Klein, M.); Kleinwort, C (Kleinwort, C.); Kluge, T (Kluge, T.); Knutsson, A
(Knutsson, A.); Kogler, R (Kogler, R.); Korbel, V (Korbel, V.); Kostka, R (Kostka, R.);
Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar, J (Kretzschmar, J.);
Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Kutak, K (Kutak, K.);
Landon, MPJ (Landon, M. P. J.); Lange, W (Lange, W.); Lastovicka-Medin, G (LastovickaMedin, G.); Laycock, P (Laycock, P.); Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth,
G.); Lendermann, V (Lendermann, V.); Levonian, S (Levonian, S.); Li, G (Li, G.); Lipka, K
(Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N (Loktionova,
N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lytkin, L (Lytkin,
L.); Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.);
Marti, L (Marti, Ll.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A
(Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, H
(Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.);
Milcewicz-Mika, I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.);
Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Mudrinic, M (Mudrinic, M.); Muller, K
(Mueller, K.); Murin, P (Murin, P.); Naroska, B (Naroska, B.); Naumann, T (Naumann, Th.);
Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.); Nikiforov, A (Nikiforov, A.); Nowak,
G (Nowak, G.); Nowak, K (Nowak, K.); Nozicka, M (Nozicka, M.); Olivier, B (Olivier, B.);
Olsson, JE (Olsson, J. E.); Osman, S (Osman, S.); Ozerov, D (Ozerov, D.); Palichik, V (Palichik,
V.); Panagoulias, I (Panagoulias, I.); Pandurovic, M (Pandurovic, M.); Papadopoulou, T
(Papadopoulou, Th.); Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Pejchal, O (Pejchal,
O.); Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.);
Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R (Polifka, R.); Povh, B (Povh, B.);
Preda, T (Preda, T.); Radescu, V (Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N
(Raicevic, N.); Raspiareza, A (Raspiareza, A.); Ravdandorj, T (Ravdandorj, T.); Reimer, P
(Reimer, P.); Rizvi, E (Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen,
R (Roosen, R.); Rostovtsev, A (Rostovtsev, A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Ruiz
Tabasco, J. E.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D (Salek, D.);
Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmitt, S
(Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening,
S (Shushkevich, S.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Soloviev, Y (Soloviev, Y.);
Sopicki, P (Sopicki, P.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka,
A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B (Stella, B.); Stoicea, G
(Stoicea, G.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.);
Tchoulakov, V (Tchoulakov, V.); Thompson, G (Thompson, G.); Thompson, PD (Thompson, P.
D.); Toll, T (Toll, T.); Tomasz, F (Tomasz, F.); Tran, TH (Tran, T. H.); Traynor, D (Traynor,
D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B
(Tseepeldorj, B.); Turnau, J (Turnau, J.); Urban, K (Urban, K.); Valkarova, A (Valkarova, A.);
Vallee, C (Vallee, C.); Van Mechelen, P (Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas);
Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.); von
den Driesch, M (von den Driesch, M.); Wegener, D (Wegener, D.); Wissing, C (Wissing, Ch.);
Wunsch, E (Wuensch, E.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.);
Zhokin, A (Zhokin, A.); Zimmermann, T (Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.);
Zomer, F (Zomer, F.)
Title: Inclusive photoproduction of rho(0), K*(0) and phi mesons at HERA H1 Collaboration
Source: PHYSICS LETTERS B, 673 (2): 119-126 MAR 16 2009
Abstract: Inclusive non-diffractive photoproduction of rho(770)(0), K*(892)(0) and phi(1020)
mesons is investigated with the H1 detector in ep collisions at HERA. The corresponding
average gamma p centre-of-mass energy is 210 GeV. The mesons are measured in the transverse
momentum range 0.5 < p(T) < 7 GeV and the rapidity range vertical bar y(lab)vertical bar < 1.
Differential cross sections are presented as a function of transverse momentum and rapidity, and
are compared to the predictions of hadroproduction models. (C) 2009 Elsevier B.V. All rights
reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2009.02.016
Record 16 of 499
Author(s): Hakobyan, T (Hakobyan, Tigran); Nersessian, A (Nersessian, Armen)
Title: Lobachevsky geometry of (super)conformal mechanics
Source: PHYSICS LETTERS A, 373 (11): 1001-1004 MAR 9 2009
Abstract: We give a simple geometric explanation for the similarity transformation mapping
one-dimensional conformal mechanics to free-particle system. Namely, we show that this
transformation corresponds to the inversion of the Klein model of Lobachevsky space (noncompact complex projective plane) (CP) over tilde (1). We also extend this picture to the N = 2k
superconformal mechanics described in terms of Lobachevsky superspace (CP) over tilde (1/k).
(C) 2009 Elsevier B.V. All rights reserved.
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2009.01.036
Record 17 of 499
Author(s): Hovhannisyan, VV (Hovhannisyan, V. V.); Ghulghazaryan, RG (Ghulghazaryan, R.
G.); Ananikian, NS (Ananikian, N. S.)
Title: The partition function zeros of the anisotropic Ising model with multisite interactions on a
zigzag ladder
Source: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 388 (8):
1479-1490 APR 15 2009
Abstract: It is shown that the spin-1/2 aniscitropic Ising model with multisite interactions on a
zigzag ladder may be mapped into the one dimensional spin-1/2 Axial-Next-Nearest-Neighbor
Ising (ANNNI) model with multisite interactions. The partition function zeros of the ANNNI
model with multisite interactions are investigated. A comprehensive analysis of the partition
function zeros of the ANNNI model with and without three-site interactions on a zigzag ladder is
done using the transfer matrix method. Analytical equations for the distribution of the partition
function zeros in the complex magnetic field (Yang-Lee zeros) and temperature (Fisher zeros)
planes are derived. The Yang-Lee and Fisher zeros distributions are studied numerically for a
variety of values of the model parameters. The densities of the Yang-Lee and Fisher zeros are
studied and the corresponding edge singularity exponents are calculated. It is shown that the
introduction of three-site interaction terms in the ANNNI model leads to a simpler distribution of
the partition function zeros. For example, the Yang-Lee zeros tend to a circular distribution when
increasing by modulus the three-site interactions term coefficient. It is found that the Yang-Lee
and Fisher edge singularity exponents are universal and equal to each other, (C) 2009 Elsevier
B.V. All rights reserved.
ISSN: 0378-4371
DOI: 10.1016/j.physa.2008.12.065
Record 18 of 499
Author(s): Gazazyan, ED (Gazazyan, E. D.); Davtyan, AK (Davtyan, A. K.)
Title: Electron bunch interaction with a monochromatic electromagnetic wave
Source: JOURNAL OF CONTEMPORARY PHYSICS-ARMENIAN ACADEMY OF
SCIENCES, 44 (2): 51-56 APR 2009
Abstract: A technique of modulation of the charge density in a bunch when it interacts with a
linearly polarized laser beam is developed. Solution of the problem is based on the numerical
method for determination of interaction time of different electrons in the bunch flying through
the interaction region, with use of an integral of motion of an electron in the monochromatic
electromagnetic field. It is shown that in the terahertz frequency range, at high values of the field
strength, sufficiently harddriving modulation of the charge density in the bunch may be obtained.
High efficiency of the bunch charge density modulation is demonstrated in plots for different
electrodynamical parameters.
ISSN: 1068-3372
DOI: 10.3103/S1068337209020017
Record 19 of 499
Author(s): Aleksanyan, E (Aleksanyan, E. M.)
Title: VUV luminescence of Er3+ ions in LiYF4 and BaY2F8 crystals
SCIENCES, 44 (2): 75-79 APR 2009
Abstract: Vacuum ultraviolet luminescence of Er3+ ions in LiYF4 and BaY2F8 crystals has
been investigated. It is revealed that under excitation by 193 nm radiation from an ArF excimer
laser the interconfigurational 5d-4f radiative transitions in Er3+ ions are observed. It is shown
that from the LiYF4:Er crystal only the spin-forbidden luminescence (lambda = 165 nm) is
detected, whereas both the spin-forbidden (lambda = 169 nm) and spin-allowed (lambda = 160.5
nm) components are observed from the BaY2F8:Er crystal.
ISSN: 1068-3372
DOI: 10.3103/S1068337209020054
Record 20 of 499
Author(s): Albert, J (Albert, J.); Aliu, E (Aliu, E.); Anderhub, H (Anderhub, H.); Antonelli, LA
(Antonelli, L. A.); Antoranz, P (Antoranz, P.); Backes, M (Backes, M.); Baixeras, C (Baixeras,
C.); Barrio, JA (Barrio, J. A.); Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Becker, JK
(Becker, J. K.); Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bernardini, E (Bernardini,
E.); Bigongiari, C (Bigongiari, C.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.); Bonnoli, G
(Bonnoli, G.); Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.);
Britvitch, I (Britvitch, I.); Camara, M (Camara, M.); Carmona, E (Carmona, E.); Chilingarian, A
(Chilingarian, A.); Commichau, S (Commichau, S.); Contreras, JL (Contreras, J. L.); Cortina, J
(Cortina, J.); Costado, MT (Costado, M. T.); Covino, S (Covino, S.); Curtef, V (Curtef, V.);
Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); del Pozo, ED (De Cea del Pozo, E.); de los
Reyes, R (De Los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
Sabata, F (De Sabata, F.); Mendez, CD (Mendez, C. Delgado); Dominguez, A (Dominguez, A.);
Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M (Errando, M.); Fagiolini, M (Fagiolini,
M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.); Fonseca, MV
(Fonseca, M. V.); Font, L (Font, L.); Galante, N (Galante, N.); Lopez, RJG (Garcia Lopez, R. J.);
Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F (Goebel, F.); Hayashida, M
(Hayashida, M.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Hsu, CC
(Hsu, C. C.); Huber, S (Huber, S.); Jogler, T (Jogler, T.); Kranich, D (Kranich, D.); La Barbera,
A (La Barbera, A.); Laille, A (Laille, A.); Leonardo, E (Leonardo, E.); Lindfors, E (Lindfors,
E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, M (Lopez, M.); Lorenz, E
(Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.); Mankuzhiyil, N
(Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Maraschi, L (Maraschi, L.); Mariotti, M
(Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Meucci, M (Meucci, M.);
Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi,
S (Mizobuchi, S.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.);
Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.); Oya, I (Oya, I.);
Panniello, M (Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M
(Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-
Torres, MA (Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A
(Piccioli, A.); Prada, F (Prada, F.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.);
Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi,
M (Rissi, M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.);
Saito, TY (Saito, T. Y.); Salvati, M (Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.);
Sartori, P (Sartori, P.); Satalecka, K (Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V
(Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer, T.); Shayduk, M (Shayduk,
M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N (Sidro, N.); SierpowskaBartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A (Sillanpaeae, A.); Sobczynska, D
(Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.);
Takalo, L (Takalo, L.); Tavecchio, F (Tavecchio, F.); Temnikov, P (Temnikov, P.); Tescaro, D
(Tescaro, D.); Teshima, M (Teshima, M.); Tluczykont, M (Tluczykont, M.); Torres, DF (Torres,
D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V
(Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zabalza, V (Zabalza, V.);
Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: PERIODIC VERY HIGH ENERGY gamma-RAY EMISSION FROM LS I+61 degrees
303 OBSERVED WITH THE MAGIC TELESCOPE
Source: ASTROPHYSICAL JOURNAL, 693 (1): 303-310 MAR 1 2009
Abstract: The MAGIC collaboration has recently reported the discovery of gamma-ray emission
from the binary system LS I +61 degrees 303 in the TeV energy region. Here we present new
observational results on this source in the energy range between 300 GeV and 3 TeV. In total,
112 hr of data were taken between 2006 September and December covering four orbital cycles of
this object. This large amount of data allowed us to produce an integral flux light curve covering
for the first time all orbital phases of LS I +61 degrees 303. In addition, we also obtained a
differential energy spectrum for two orbital phase bins covering the phase range 0.5 < phi < 0.6
and 0.6 < phi < 0.7. The photon index in the two phase bins is consistent within the errors with
an average index Gamma = 2.6 +/- 0.2(stat) +/- 0.2(sys). LS I +61 degrees 303 was found to be
variable at TeV energies on timescales of days. These new MAGIC measurements allowed us to
search for intranight variability of the very high energy emission; however, no evidence for flux
variability on timescales down to 30 min was found. To test for possible periodic structures in
the light curve, we apply the formalism developed by Lomb and Scargle to the LS I +61 degrees
303 data taken in 2005 and 2006. We found the LS I +61 degrees 303 data set to be periodic with
a period of (26.8 +/- 0.2) days (with a post-trial chance probability of 10(-7)), close to the orbital
period.
ISSN: 0004-637X
DOI: 10.1088/0004-637X/693/1/303
Record 21 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); de Almeida,
UB (de Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Behera, B (Behera, B.);
Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.); Boisson, C
(Boisson, C.); Bochow, A (Bochow, A.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E
(Brion, E.); Brucker, J (Brucker, J.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I
(Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan, S.); Chadwick, PM
Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A. C.); Coignet, G (Coignet, G.);
Costamante, L (Costamante, L.); Dalton, M (Dalton, M.); Degrange, B (Degrange, B.);
Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Atai, A.); Domainko, W
(Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F (Dubois, F.); Dubus, G (Dubus, G.);
Dyks, J (Dyks, J.); Egberts, K (Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.);
Espigat, P (Espigat, P.); Farnier, C (Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson,
A.); Forster, A (Foerster, A.); Fontaine, G (Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S
(Gabici, S.); Gallant, YA (Gallant, Y. A.); Gerard, L (Gerard, L.); Giebels, B (Giebels, B.);
Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C
(Hadjichristidis, C.); Hauser, D (Hauser, D.); Hauser, M (Hauser, M.); Heinzelmann, G
(de Jager, O. C.); Jung, I (Jung, I.); Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann,
S.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khangulyan, D
(Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D (Keogh, D.); Komin, N (Komin, Nu.);
Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); LemoineGoumard, M (Lemoine-Goumard, M.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.);
Marandon, V (Marandon, V.); Martin, JM (Martin, J. M.); Martineau-Huynh, O (MartineauHuynh, O.); Marcowith, A (Marcowith, A.); Masterson, C (Masterson, C.); Maurin, D (Maurin,
D.); McComb, TJL (McComb, T. J. L.); Medina, C (Medina, C.); Moderski, R (Moderski, R.);
(Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JF (Olive, J-F.); Wilhelmi, ED (Wilhelmi, E. de Ona);
Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter,
M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, PO.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A
Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo, A.); Schlickeiser,
R (Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R (Schroeder, R.); Schwanke, U
(Schwanke, U.); Schwarzburg, S (Schwarzburg, S.); Schwemmer, S (Schwemmer, S.); Shalchi,
A (Shalchi, A.); Skilton, JL (Skilton, J. L.); Sol, H (Sol, H.); Spangler, D (Spangler, D.);
Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp, R.); Stegmann, C (Stegmann, C.);
Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R
(Terrier, R.); Tibolla, O (Tibolla, O.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis,
G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P (Vincent, P.); Vink, J (Vink, J.);
Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S.
J.); Ward, M (Ward, M.); Zdziarski, AA (Zdziarski, A. A.); Zech, A (Zech, A.)
Title: DISCOVERY OF GAMMA-RAY EMISSION FROM THE SHELL-TYPE
SUPERNOVA REMNANT RCW 86 WITH HESS
Source: ASTROPHYSICAL JOURNAL, 692 (2): 1500-1505 FEB 20 2009
Abstract: The shell-type supernova remnant (SNR) RCW 86, possibly associated with the
historical supernova SN 185, with its relatively large size (about 40' in diameter) and the
presence of nonthermal X-rays is a promising target for gamma-ray observations. The high
sensitivity, good angular resolution of a few arcminutes and the large field of view of the High
Energy Stereoscopic System (HESS) make it ideally suited for the study of gamma-ray
morphology of such extended sources. HESS observations have indeed led to the discovery of
the SNR RCW 86 in very high energy (VHE; E > 100 GeV) gamma-rays. With 31 hr of
observation time, the source is detected with a statistical significance of 8.5 sigma and is
significantly more extended than the HESS point-spread function. Morphological studies have
been performed and show that the gamma-ray flux does not correlate perfectly with the X-ray
emission. The flux from the remnant is similar to 10% of the flux from the Crab nebula, with a
similar photon index of about 2.5. Possible origins of the VHE gamma-ray emission, via either
Inverse Compton scattering by electrons or the decay of neutral pions produced by proton
interactions, are discussed on the basis of spectral features obtained both in the X-ray and
gamma-ray regimes.
ISSN: 0004-637X
DOI: 10.1088/0004-637X/692/2/1500
Record 22 of 499
Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.); Boisson, C (Boisson, C.); Bochow, A
(Bochow, A.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J
(Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I
A. C.); Coignet, G (Coignet, G.); Dalton, M (Dalton, M.); Degrange, B (Degrange, B.); Deil, C
(Deil, C.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Atai, A.); Domainko, W
Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.); Egberts, K (Egberts, K.); Emmanoulopoulos, D
(Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier, C (Farnier, C.); Feinstein, F
(Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A (Foerster, A.); Fontaine, G (Fontaine, G.);
Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.); Gallant, YA (Gallant, Y. A.); Gerard, L
(Gerard, L.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.);
Goret, P (Goret, P.); Hadjichristidis, C (Hadjichristidis, C.); Hauser, D (Hauser, D.); Hauser, M
(Hauser, M.); Heinz, S (Heinz, S.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.);
Hermann, G (Hermann, G.); Hinton, JA (Hinton, J. A.); Hoffmann, A (Hoffmann, A.); Hofmann,
W (Hofmann, W.); Holleran, M (Holleran, M.); Hoppe, S (Hoppe, S.); Horns, D (Horns, D.);
Jacholkowska, A (Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Jung, I (Jung, I.);
Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra, E.);
Kerschhaggl, M (Kerschhaggl, M.); Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi, B.);
Keogh, D (Keogh, D.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G
(Lamanna, G.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Marandon, V (Marandon, V.);
Martin, JM (Martin, J. M.); Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A
(Marcowith, A.); Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.); Medina, MC
(Medina, M. C.); Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); Naumann-Godo, M
(Naumann-Godo, M.); de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nekrassov, D
(Nekrassov, D.); Niemiec, J (Niemiec, J.); Nolan, SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JF
(Olive, J. -F.); Wilhelmi, ED (Wilhelmi, E. de Ona); Orford, KJ (Orford, K. J.); Osborne, JL
(Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.); Pedaletti, G (Pedaletti,
G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P. -O.); Pita, S (Pita, S.); Puhlhofer, G
(Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A (Quirrenbach, A.); Raubenheimer, BC
(Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.); Renaud, M (Renaud,
M.); Rieger, F (Rieger, F.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (RosierLees, S.); Rowell, G (Rowell, G.); Rudak, B (Rudak, B.); Rulten, CB (Rulten, C. B.); Ruppel, J
(Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo, A.); Schlickeiser, R
(Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R (Schroeder, R.); Schwanke, U
G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P (Vincent, P.); Vivier, M (Vivier,
M.); Volk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward,
M.); Zdziarski, AA (Zdziarski, A. A.); Zech, A (Zech, A.)
Title: HESS observations of gamma-ray bursts in 2003-2007
Source: ASTRONOMY & ASTROPHYSICS, 495 (2): 505-512 FEB 2009
Abstract: Aims. Very-high-energy (VHE; greater than or similar to 100 GeV) gamma-rays are
expected from gamma-ray bursts (GRBs) in some scenarios. Exploring this photon energy
regime is necessary for understanding the energetics and properties of GRBs.
Methods. GRBs have been one of the prime targets for the HESS experiment, which makes use
of four Imaging Atmospheric Cherenkov Telescopes (IACTs) to detect VHE gamma-rays.
Dedicated observations of 32 GRB positions were made in the years 2003-2007 and a search for
VHE gamma-ray counterparts of these GRBs was made. Depending on the visibility and
observing conditions, the observations mostly start minutes to hours after the burst and typically
last two hours.
Results. Results from observations of 22 GRB positions are presented. Evidence of a VHE signal
was found neither in observations of any individual GRBs nor from stacking data from subsets of
GRBs with higher expected VHE flux according to a model-independent ranking scheme. Upper
limits for the VHE gamma-ray flux from the GRB positions were derived. For those GRBs with
measured redshifts, differential upper limits at the energy threshold after correcting for
absorption due to extra-galactic background light are also presented.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200811072
Record 23 of 499
Author(s): Sargsyan, KG (Sargsyan, K. G.)
Title: YANG-LEE AND FISHER ZEROS GENERALIZED ON SOME FAR-FROMEQUILIBRIUM SYSTEMS
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 23 (3): 375-381 JAN 30
2009
Abstract: A generalization of the Yang-Lee and Fisher zeros on far-from-equilibrium systems
coupled with two thermal baths is proposed. The Yang-Lee zeros were obtained for minimal
models which exhibit complicated behavior in the context of the partition function zeros and
provide an analitycal treatment. This type of model may be considered as a simplest one and
analogous to Ising model for equilibrium. The obtained distributions of generalized Yang-Lee
zeros show nontrivial behavior for these simple models.
ISSN: 0217-9792
Record 24 of 499
A (Baghdasaryan, A.); Barrelet, E (Barrelet, E.); Bartel, W (Bartel, W.); Beckingham, M
(Beckingham, M.); Begzsuren, K (Begzsuren, K.); Behnke, O (Behnke, O.); Belousov, A
(Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO (Boenig, M. -O.);
(Bruncko, D.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G (Buschhorn, G.); Bystritskaya, L
(Bystritskaya, L.); Campbell, AJ (Campbell, A. J.); Avila, KB (Cantun Avila, K. B.); CassolBrunner, F (Cassol-Brunner, F.); Cerny, K (Cerny, K.); Cerny, V (Cerny, V.); Chekelian, V
(Chekelian, V.); Cholewa, A (Cholewa, A.); Contreras, JG (Contreras, J. G.); Coughlan, JA
(Coughlan, J. A.); Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton, JB (Dainton, J. B.);
Daum, K (Daum, K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.);
Del Degan, M (Del Degan, M.); Delvax, J (Delvax, J.); De Roeck, A (De Roeck, A.); De Wolf,
EA (De Wolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dossanov, A
(Dossanov, A.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko,
V.); Egli, S (Egli, S.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov, S.);
Falkiewicz, A (Falkiewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.);
Fedotov, A (Fedotov, A.); Felst, R (Felst, R.); Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.);
Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Gabathuler, E (Gabathuler, E.);
Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Glazov, A (Glazov, A.); Glushkov, I
(Glushkov, I.); Goerlich, L (Goerlich, L.); Goettlich, M (Goettlich, M.); Gogitidze, N (Gogitidze,
N.); Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Grell,
BR (Grell, B. R.); Grindhammer, G (Grindhammer, G.); Habib, S (Habib, S.); Haidt, D (Haidt,
D.); Hansson, M (Hansson, M.); Helebrant, C (Helebrant, C.); Henderson, RCW (Henderson, R.
C. W.); Hennekemper, E (Hennekemper, E.); Henschel, H (Henschel, H.); Herrera, G (Herrera,
G.); Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D (Hoffmann, D.);
Horisberger, R (Horisberger, R.); Hovhannisyan, A (Hovhannisyan, A.); Hreus, T (Hreus, T.);
Jacquet, M (Jacquet, M.); Janssen, ME (Janssen, M. E.); Janssen, X (Janssen, X.); Jemanov, V
(Jemanov, V.); Jonsson, L (Jonsson, L.); Jung, AW (Jung, A. W.); Jung, H (Jung, H.);
Kapichine, M (Kapichine, M.); Katzy, J (Katzy, J.); Kenyon, IR (Kenyon, I. R.); Kiesling, C
(Kiesling, C.); Klein, M (Klein, M.); Kleinwort, C (Kleinwort, C.); Klimkovich, T (Klimkovich,
T.); Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Kogler, R (Kogler, R.); Korbel, V
(Korbel, V.); Kostka, P (Kostka, P.); Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.);
Kretzschmar, J (Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Kruger,
K.); Kutak, K (Kutak, K.); Landon, MPJ (Landon, M. P. J.); Lange, W (Lange, W.); LastovickaMedin, G (Lastovicka-Medin, G.); Laycock, P (Laycock, P.); Lebedev, A (Lebedev, A.);
Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann, V.); Levonian, S (Levonian, S.);
Li, G (Li, G.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.); List, J (List, J.);
Loktionova, N (Loktionova, N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V
(Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.); Makankine,
A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti,
L.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta, A.); Meier,
K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer, H.); Meyer,
J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I
(Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris,
Murin, P (Murin, P.); Nankov, K (Nankov, K.); Naroska, B (Naroska, B.); Naumann, T
(Naumann, T.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.); Nikiforov, A
Papadopoulou, T (Papadopoulou, T.); Pascaud, C (Pascaud, C.); Patel, G (Patel, G. D.); Pejchal,
O (Pejchal, O.); Peng, H (Peng, H.); Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.); Picuric, I
(Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R
(Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Radescu, V (Radescu, V.); Rahmat, AJ
(Rahmat, A. J.); Raicevic, N (Raicevic, N.); Raspiareza, A (Raspiareza, A.); Ravdandorj, T
(Ravdandorj, T.); Reimer, P (Reimer, P.); Rizvi, E (Rizvi, E.); Robmann, P (Robmann, P.);
Roland, B (Roland, B.); Roosen, R (Roosen, R.); Rostovtsev, A (Rostovtsev, A.); Rotaru, M
(Rotaru, M.); Tabasco, JER (Ruiz Tabasco, J. E.); Rurikova, Z (Rurikova, Z.); Rusakov, S
(Rusakov, S.); Salek, D (Salek, D.); Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.);
Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt,
S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening, A.);
Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN (ShawWest, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.); Shushkevich, S
(Shushkevich, S.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.);
Soloviev, Y (Soloviev, Y.); Sopicki, P (Sopicki, P.); South, D (South, D.); Spaskov, V (Spaskov,
V.); Specka, A (Specka, A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B
(Stella, B.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.);
(Tseepeldorj, B.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki,
E.); Urban, K (Urban, K.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen,
P (Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova,
S (Vinokurova, S.); Volchinski, V (Volchinski, V.); Wegener, D (Wegener, D.); Wessels, M
(Wessels, M.); Wissing, C (Wissing, C.); Wunsch, E (Wuensch, E.); Yeganov, V (Yeganov, V.);
Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.);
Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.); Zohrabyan,
H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Study of charm fragmentation into D (* +/-) mesons in deep-inelastic scattering at HERA
Source: EUROPEAN PHYSICAL JOURNAL C, 59 (3): 589-606 FEB 2009
Abstract: The process of charm quark fragmentation is studied using D (* +/-) meson
production in deep-inelastic scattering as measured by the H1 detector at HERA. The parameters
of fragmentation functions are extracted for QCD models based on leading order matrix elements
and DGLAP or CCFM evolution of partons together with string fragmentation and particle
decays. Additionally, they are determined for a next-to-leading order QCD calculation in the
fixed flavour number scheme using the independent fragmentation of charm quarks to D (* +/-)
mesons. Two different regions of phase space are investigated defined by the presence or
absence of a jet containing the D (* +/-) meson in the event. The fragmentation parameters
extracted for the two phase space regions are found to be different.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0792-2
Record 25 of 499
Author(s): Ivanov, NY (Ivanov, N. Ya.); Kniehl, BA (Kniehl, B. A.)
Title: On the perturbative stability of the QCD predictions for the ratio R = F-L/F-T in heavyquark leptoproduction
Source: EUROPEAN PHYSICAL JOURNAL C, 59 (3): 647-658 FEB 2009
Abstract: We analyze the perturbative and parametric stability of the QCD predictions for the
Callan-Gross ratio, R(x, Q(2)) = F-L/F-T, in heavy-quark leptoproduction. We consider the
radiative corrections to the dominant photon-gluon fusion mechanism. In various kinematic
regions, the following contributions are investigated: exact NLO results at low and moderate
Q(2) less than or similar to m(2), asymptotic NLO predictions at high Q(2) >> m(2), and both
NLO and NNLO soft-gluon (or threshold) corrections at large Bjorken variable x. Our analysis
shows that large radiative corrections to the structure functions F-T (x, Q(2)) and F-L(x, Q(2))
cancel each other in their ratio R(x, Q(2)) with good accuracy. As a result, the NLO
contributions to the Callan-Gross ratio are less than 10% in a wide region of the variables x and
Q(2). We provide compact LO predictions for R(x, Q(2)) in the case of low x << 1. A simple
formula connecting the high-energy behavior of the Callan-Gross ratio and low-x asymptotics of
the gluon density is derived. It is shown that the obtained hadron-level predictions for R(x -> 0,
Q(2)) are stable under the DGLAP evolution of the gluon distribution function. Our analytic
results simplify the extraction of the structure functions F-2(c) (x, Q(2)) and F-2(b) (x, Q(2))
from measurements of the corresponding reduced cross sections, in particular at DESY HERA.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0813-1
Record 26 of 499
Author(s): Morrow, SA (Morrow, S. A.); Guidal, M (Guidal, M.); Garcon, M (Garcon, M.);
Laget, JM (Laget, J. M.); Smith, ES (Smith, E. S.); Adams, G (Adams, G.); Adhikari, KP
(Adhikari, K. P.); Aghasyan, M (Aghasyan, M.); Amaryan, MJ (Amaryan, M. J.); Anghinolfi, M
(Anghinolfi, M.); Asryan, G (Asryan, G.); Audit, G (Audit, G.); Avakian, H (Avakian, H.);
Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA
(Baltzell, N. A.); Barrow, S (Barrow, S.); Battaglieri, M (Battaglieri, M.); Bedlinskiy, I
(Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M (Bellis, M.); Benmouna, N
(Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.); Blaszczyk, L
(Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bookwalter, C (Bookwalter, C.); Bouchigny, S
(Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.); Branford, D
(Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.); Bultmann, S
(Bueltmann, S.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu, C.); Calarco, JR
(Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Carnahan, B
(Carnahan, B.); Casey, L (Casey, L.); Cazes, A (Cazes, A.); Chen, S (Chen, S.); Cheng, L
(Cheng, L.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Cords, D
(Cords, D.); Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.);
Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dale, D (Dale, D.); Dashyan, N
(Dashyan, N.); De Masi, R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis,
E.); Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.);
Deur, A (Deur, A.); Dhamija, S (Dhamija, S.); Dharmawardane, KV (Dharmawardane, K. V.);
Dhuga, KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Didelez, JP (Didelez, J. -P.); Djalali, C
(Djalali, C.); Dodge, GE (Dodge, G. E.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.);
Dytman, S (Dytman, S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS
(Egiyan, K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio,
P.); Fatemi, R (Fatemi, R.); Fedotov, G (Fedotov, G.); Fersch, R (Fersch, R.); Feuerbach, RJ
(Feuerbach, R. J.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Gavalian, G (Gavalian, G.);
Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K.
L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gohn, W (Gohn, W.); Gordon, CIO
(Gordon, C. I. O.); Gothe, RW (Gothe, R. W.); Graham, L (Graham, L.); Griffioen, KA
(Griffioen, K. A.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V
(Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan,
H.); Hanretty, C (Hanretty, C.); Hardie, J (Hardie, J.); Hassall, N (Hassall, N.); Heddle, D
(Heddle, D.); Hersman, FW (Hersman, F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.);
Holtrop, M (Holtrop, M.); Hourany, E (Hourany, E.); Hyde-Wright, CE (Hyde-Wright, C. E.);
(Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.); Kalantarians, N (Kalantarians,
N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.); Khetarpal,
P (Khetarpal, P.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko,
AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Kramer, LH (Kramer, L. H.); Kubarovsky, V
(Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.);
Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.); Langheinrich, J (Langheinrich, J.);
Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.);
MacCormick, M (MacCormick, M.); Marchand, C (Marchand, C.); Markov, N (Markov, N.);
Mattione, P (Mattione, P.); McAleer, S (McAleer, S.); McCracken, M (McCracken, M.);
McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA (Mecking, B.
A.); Mehrabyan, S (Mehrabyan, S.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M.
D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Minehart, R
(Minehart, R.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev,
V.); Morand, L (Morand, L.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Moteabbed, M
(Moteabbed, M.); Mueller, J (Mueller, J.); Munevar, E (Munevar, E.); Mutchler, GS (Mutchler,
G. S.); Nadel-Turonski, P (Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.); Niccolai, S
(Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB
(Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); Nozar, M
(Nozar, M.); O'Rielly, GV (O'Rielly, G. V.); Osipenko, M (Osipenko, M.); Ostrovidov, AI
(Ostrovidov, A. I.); Park, K (Park, K.); Park, S (Park, S.); Pasyuk, E (Pasyuk, E.); Paterson, C
(Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Philips, SA (Philips, S. A.); Pierce, J (Pierce,
J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Polli, E
(Polli, E.); Popa, I (Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM (Preedom, B. M.);
Price, JW (Price, J. W.); Procureur, S (Procureur, S.); Prok, Y (Prok, Y.); Protopopescu, D
Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Rosner, G (Rosner,
G.); Rossi, P (Rossi, P.); Rubin, PD (Rubin, P. D.); Sabatie, F (Sabatie, F.); Saini, MS (Saini, M.
S.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J. P.);
Sapunenko, V (Sapunenko, V.); Schott, D (Schott, D.); Schumacher, RA (Schumacher, R. A.);
Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.);
Shvedunov, NV (Shvedunov, N. V.); Skabelin, AV (Skabelin, A. V.); Smith, LC (Smith, L. C.);
Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS
(Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi,
DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L
Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.);
Weygand, DP (Weygand, D. P.); Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH
(Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yurov, M (Yurov, M.); Zana, L (Zana, L.);
Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Exclusive rho(0) electroproduction on the proton at CLAS
Source: EUROPEAN PHYSICAL JOURNAL A, 39 (1): 5-31 JAN 2009
Abstract: The ep -> e'pp(0) reaction has been measured using the 5.754 GeV electron beam of
Jefferson Lab and the CLAS detector. This represents the largest ever set of data for this reaction
in the valence region. Integrated and differential cross-sections are presented. The W, Q(2) and t
dependences of the cross-section are compared to theoretical calculations based on the t-channel
meson-exchange Regge theory, on the one hand, and on quark handbag diagrams related to
Generalized Parton Distributions (GPDs) on the other hand. The Regge approach can describe at
the approximate to 30% level most of the features of the present data while the two GPD
calculations that are presented in this article which succesfully reproduce the high-energy data
strongly underestimate the present data. The question is then raised whether this discrepancy
originates from an incomplete or inexact way of modelling the GPDs or the associated hard
scattering amplitude or whether the GPD formalism is simply inapplicable in this region due to
higher-twists contributions, incalculable at present.
ISSN: 1434-6001
DOI: 10.1140/epja/i2008-10683-5
Record 27 of 499
Author(s): Anselmino, M (Anselmino, M.); Boglione, M (Boglione, M.); D'Alesio, U (D'Alesio,
U.); Kotzinian, A (Kotzinian, A.); Melis, S (Melis, S.); Murgia, F (Murgia, F.); Prokudin, A
(Prokudin, A.); Turk, C (Tuerk, C.)
Title: Sivers effect for pion and kaon production in semi-inclusive deep inelastic scattering
Source: EUROPEAN PHYSICAL JOURNAL A, 39 (1): 89-100 JAN 2009
Abstract: We study the Sivers effect in the transverse single spin asymmetries (SSA) for pion
and kaon production in semi-inclusive deep inelastic scattering (SIDIS) processes. We perform a
fit of A(UT)(sin(phi h-phi S)) which, by including recent high-statistics experimental data for
pion and kaon production from HERMES and COMPASS Collaborations, allows a new
determination of the Sivers distribution functions for quarks and antiquarks with u, d and s
flavours. Estimates for forthcoming SIDIS experiments at COMPASS and JLab are given.
ISSN: 1434-6001
DOI: 10.1140/epja/i2008-10697-y
Record 28 of 499
Author(s): Allahverdyan, AE (Allahverdyan, A. E.); Mahler, G (Mahler, G.)
Title: Employing feedback in adiabatic quantum dynamics
Source: EPL, 84 (4): Art. No. 40007 NOV 2008
Abstract: We study quantum adiabatic dynamics, where the slowly moving field is influenced
by the system's state (feedback). The feedback is achieved either via mean-field quantumclassical interaction, or, alternatively, via non-disturbing measurements done on an ensemble of
identical non-interacting systems. The situation without feedback is governed by the adiabatic
theorem: adiabatic energy level populations stay constant, while the adiabatic eigenvectors get a
specific phase contribution (Berry phase). However, under feedback the adiabatic theorem does
not hold: the adiabatic populations satisfy a closed equation of motion that coincides with the
replicator dynamics known by its numerous applications in evolutionary game theory. The
feedback generates a new gauge-invariant adiabatic phase, which is free of the constraints on the
Berry phase (e. g., the new phase is non-zero even for real adiabatic eigenfunctions). In a
particular case the adiabatic theorem can still hold, but the new phases are non-trivial. Copyright
(C) EPLA, 2008
ISSN: 0295-5075
DOI: 10.1209/0295-5075/84/40007
Record 29 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); Anton, G
(Anton, G.); de Almeida, UB (de Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.);
Becherini, Y (Becherini, Y.); Behera, B (Behera, B.); Bernlohr, K (Bernloehr, K.); Boisson, C
(Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik, T (Bulik,
T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Chadwick, PM (Chadwick, P. M.);
Charbonnier, A (Charbonnier, A.); Chaves, RCG (Chaves, R. C. G.); Cheesebrough, A
(Cheesebrough, A.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A. C.); Coignet, G
(Coignet, G.); Dalton, M (Dalton, M.); Daniel, MK (Daniel, M. K.); Degrange, B (Degrange,
B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Atai, A.);
Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F (Dubois, F.); Dubus, G
(Dubus, G.); Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.); Egberts, K (Egberts, K.);
Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier, C (Farnier, C.);
Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A (Foerster, A.); Fontaine, G
(Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.); Gallant, YA (Gallant, Y. A.);
Gerard, L (Gerard, L.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B
(Glueck, B.); Goret, P (Goret, P.); Hauser, D (Hauser, D.); Hauser, M (Hauser, M.); Heinz, S
(Heinz, S.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.); Hermann, G (Hermann,
G.); Hinton, JA (Hinton, J. A.); Hoffmann, A (Hoffmann, A.); Hofmann, W (Hofmann, W.);
Holleran, M (Holleran, M.); Hoppe, S (Hoppe, S.); Horns, D (Horns, D.); Jacholkowska, A
(Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Jung, I (Jung, I.); Katarzynski, K
(Katarzynski, K.); Katz, U (Katz, U.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra,
E.); Kerschhaggl, M (Kerschhaggl, M.); Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi,
B.); Keogh, D (Keogh, D.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G
(Olive, J. -F.); Wilhelmi, ED (Wilhelmi, E. de Ona); Orford, KJ (Orford, K. J.); Ostrowski, M
(Ostrowski, M.); Panter, M (Panter, M.); Arribas, MP (Arribas, M. Paz); Pedaletti, G (Pedaletti,
Superina, G (Superina, G.); Szostek, A (Szostek, A.); Tam, PH (Tam, P. H.); Tavernet, JP
(Tavernet, J. -P.); Terrier, R (Terrier, R.); Tibolla, O (Tibolla, O.); van Eldik, C (van Eldik, C.);
Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Venter, L (Venter, L.); Vialle, JP
(Vialle, J. P.); Vincent, P (Vincent, P.); Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.); Volpe, F
(Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA (Zdziarski, A. A.);
Zech, A (Zech, A.)
Title: Very high energy gamma-ray observations of the galaxy clusters Abell 496 and Abell 85
with HESS
Abstract: Aims. The nearby galaxy clusters Abell 496 and Abell 85 are studied in the very highenergy (VHE, E > 100 GeV) band to investigate VHE cosmic rays (CRs) in this class of objects
which are the largest gravitationally bound systems in the Universe.
Methods. HESS, an array of four imaging atmospheric cherenkov telescopes (IACT), was used
to observe the targets in the range of VHE gamma rays.
Results. No significant gamma-ray signal is found at the respective position of the two clusters
with several different source size assumptions for each target. In particular, emission regions
corresponding to the high-density core, to the extension of the entire X-ray emission in these
clusters, and to the very extended region where the accretion shock is expected are investigated.
Upper limits are derived for the gamma-ray flux at energies E > 570 GeV for Abell 496 and E >
460 GeV for Abell 85.
Conclusions. From the non-detection in VHE gamma rays, upper limits on the total energy of
hadronic CRs in the clusters are calculated. If the cosmic-ray energy density follows the largescale gas density profile, the limit on the fraction of energy in these non-thermal particles with
respect to the total thermal energy of the intra-cluster medium (ICM) is 51% for Abell 496 and
only 8% for Abell 85 due to its higher mass and higher gas density. These upper limits are
compared with theoretical estimates. They predict about similar to 10% of the thermal energy of
the ICM in non-thermal particles. The observations presented here can constrain these
predictions especially for the case of the Abell 85 cluster.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200811372
Record 30 of 499
Author(s): Prok, Y (Prok, Y.); Bosted, P (Bosted, P.); Burkert, VD (Burkert, V. D.); Deur, A
(Deur, A.); Dharmawardane, KV (Dharmawardane, K. V.); Dodge, GE (Dodge, G. E.);
Griffioen, KA (Griffioen, K. A.); Kuhn, SE (Kuhn, S. E.); Minehart, R (Minehart, R.); Adams, G
(Adams, G.); Amaryan, MJ (Amaryan, M. J.); Anghinolfi, M (Anghinolfi, M.); Asryan, G
(Asryan, G.); Audit, G (Audit, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan,
H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Barrow, S
(Barrow, S.); Battaglieri, M (Battaglieri, M.); Beard, K (Beard, K.); Bedlinskiy, I (Bedlinskiy,
I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.);
Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.); Blaszczyk, L (Blaszczyk, L.);
Boiarinov, S (Boiarinov, S.); Bonner, BE (Bonner, B. E.); Bouchigny, S (Bouchigny, S.);
Bradford, R (Bradford, R.); Branford, D (Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks,
WK (Brooks, W. K.); Bultmann, S (Bueltmann, S.); Butuceanu, C (Butuceanu, C.); Calarco, JR
(Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey,
L.); Cazes, A (Cazes, A.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.);
Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Cords, D (Cords, D.); Corvisiero, P
(Corvisiero, P.); Crabb, D (Crabb, D.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.);
Dale, D (Dale, D.); Dashyan, N (Dashyan, N.); De Masi, R (De Masi, R.); De Vita, R (De Vita,
R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli,
H.); Dennis, L (Dennis, L.); Dhuga, KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Djalali, C
(Djalali, C.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.); Dytman, S (Dytman, S.);
Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L
(El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.);
Fedotov, G (Fedotov, G.); Feldmann, G (Feldmann, G.); Fersh, RG (Fersh, R. G.); Feuerbach, RJ
(Feuerbach, R. J.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.);
Garcon, M (Garcon, M.); Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle,
GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT
(Goetz, J. T.); Golovatch, E (Golovatch, E.); Gothe, RW (Gothe, R. W.); Guidal, M (Guidal,
M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan,
V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.);
Hanretty, C (Hanretty, C.); Hardie, J (Hardie, J.); Hassall, N (Hassall, N.); Heddle, D (Heddle,
D.); Hersman, FW (Hersman, F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop,
M (Holtrop, M.); Huertas, M (Huertas, M.); Hyde-Wright, CE (Hyde-Wright, C. E.); Ilievan, Y
(Ilievan, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL
N.); Keith, CD (Keith, C. D.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.); Kim,
KY (Kim, K. Y.); Kim, K (Kim, K.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein,
F. J.); Klusman, M (Klusman, M.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH
(Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuleshov, SV (Kuleshov,
S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.);
Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Lima, ACS (Lima,
A. C. S.); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); Lukashin, K (Lukashin, K.);
MacCormick, M (MacCormick, M.); Marchand, C (Marchand, C.); Markov, N (Markov, N.);
Mattione, R (Mattione, R.); McAleer, S (McAleer, S.); McKinnon, B (McKinnon, B.); McNabb,
JWC (McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M. D.);
Meyere, CA (Meyere, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mirazita, M
(Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Morand, L (Morand,
L.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.);
Moteabbed, M (Moteabbed, M.); Mueller, J (Mueller, J.); Munevar, E (Munevar, E.); Mutchler,
GS (Mutchler, G. S.); Nadel-Turonski, R (Nadel-Turonski, R.); Nasseripour, R (Nasseripour,
R.); Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.);
Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.); Niyazov, RA (Niyazov, R.
A.); Nozar, M (Nozar, M.); O'Rielly, GV (O'Rielly, G. V.); Osipenko, M (Osipenko, M.);
Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.); Paterson, C
J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Popa, I
(Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM (Preedom, B. M.); Price, JW (Price, J.
W.); Procureur, S (Procureur, S.); Protopopescu, D (Protopopescu, D.); Qin, LM (Qin, L. M.);
Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani,
M.); Ritchie, BG (Ritchie, B. G.); Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Rowntree, D
(Rowntree, D.); Rubin, PD (Rubin, P. D.); Sabatie, F (Sabatie, F.); Salamanca, J (Salamanca, J.);
Salgado, C (Salgado, C.); Santoro, JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.);
Schumacher, RA (Schumacher, R. A.); Seely, ML (Seely, M. L.); Serov, VS (Serov, V. S.);
Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shaw, J (Shaw, J.); Shvedunov, NV
(Shvedunov, N. V.); Skabelin, AV (Skabelin, A. V.); Smith, ES (Smith, E. S.); Smith, LC
(Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.);
Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.);
Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.); Suleiman, R
(Suleiman, R.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze,
A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.); Ungaro, M (Ungaro, M.); Vineyard,
MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB
(Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yun, J (Yun, J.);
Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Group Author(s): CLAS Collaboration
Title: Moments of the spin structure functions g(1)(p) and g(1)(d) for 0.05 < Q(2) < 3.0 GeV2
Source: PHYSICS LETTERS B, 672 (1): 12-16 FEB 9 2009
Abstract: The spin structure functions g, for the proton and the deuteron have been measured
over a wide kinematic range in x and Q(2) using 1.6 and 5.7 GeV longitudinally polarized
electrons incident upon polarized NH3 and ND3 targets at Jefferson Lab. Scattered electrons
were detected in the CEBAF Large Acceptance Spectrometer, for 0.05 < Q(2) < 5 GeV2 and W
< 3 GeV. The first moments of g(1) for the proton and deuteron are presented - both have a
negative slope at low Q(2), as predicted by the extended Gerasimov-Drell-Hearn sum rule. The
first extraction of the generalized forward spin polarizability of the proton gamma(p)(0) is also
reported. This quantity shows strong Q(2) dependence at low Q(2). Our analysis of the Q(2)
evolution of the first moment of g, shows agreement in leading order with Heavy Baryon Chiral
Perturbation Theory. However, a significant discrepancy is observed between the gamma(p)(0)
data and Chiral Perturbation calculations for gamma(p)(0), even at the lowest Q(2). (C) 2009
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.12.063
Record 31 of 499
Author(s): Allahverdyan, AE (Allahverdyan, Armen E.); Hu, CK (Hu, Chin-Kun)
Title: Replicators in a Fine-Grained Environment: Adaptation and Polymorphism
Source: PHYSICAL REVIEW LETTERS, 102 (5): Art. No. 058102 FEB 6 2009
Abstract: Selection in a time-periodic environment is modeled via the two-player replicator
dynamics. For sufficiently fast environmental changes, this is reduced to a multiplayer replicator
dynamics in a constant environment. The two-player terms correspond to the time-averaged
payoffs, while the three- and four-player terms arise from the adaptation of the morphs to their
varying environment. Such multiplayer terms can induce a stable polymorphism. The
establishment of the polymorphism in partnership games [genetic selection] is accompanied by
decreasing mean fitness of the population.
ISSN: 0031-9007
Record 32 of 499
Author(s): Zhamkochyan, SV (Zhamkochyan, S. V.)
Title: Time Resolution of the Bunch-Shape Detector with a Thin-Wire Emission Target
SCIENCES, 43 (4): 196-202 AUG 2008
Abstract: The time resolution of a new bunch-length detector based on the radio frequency (RF)
scanning of the produced secondary electrons is calculated. A dedicated Monte-Carlo code by
means of SIMION software is developed for accurate simulation of spread in the investigated
secondary electrons transit times and image width. In calculation the initial energy distribution of
electrons and the actual structure of accelerating and focusing electric fields were considered. It
is shown that by using a thin-wire emission target a femtosecond time precision could be
achieved using moderate applied voltages.
ISSN: 1068-3372
DOI: 10.3103/S1068337208040087
Record 33 of 499
Title: Linear Polymer with Hydrogen Bonds as a Nonequilibrium System
SCIENCES, 43 (4): 208-209 AUG 2008
Abstract: A two-temperature nonequilibrium model of a linear polymer with possible formation
of hydrogen bonds between monomers is proposed. A molecule is considered to be in an
adiabatic stationary state far from equilibrium. The dependence of the mean-square distance
between the chain ends on the number of monomers is calculated with the simplest approach of
Flory in case T > Theta.
ISSN: 1068-3372
DOI: 10.3103/S1068337208040105
Record 34 of 499
Author(s): Shahinyan, AH (Shahinyan, A. H.)
Title: Features of a Setup for Investigation of Two-Particle Exclusive Reactions with High
Transfer Momentum
SCIENCES, 43 (5): 238-244 OCT 2008
Abstract: The technique of experimental design for electron and photon exclusive scattering on
nucleons with transfer momentum values of the order of 10 GeV2 is presented. The multichannel
detectors providing the possibility to realize exclusive experiments with luminosity values of
10(39) cm(-2)/s are described.
ISSN: 1068-3372
DOI: 10.3103/S1068337208050058
Record 35 of 499
Author(s): Aleksanyan, EO (Aleksanyan, E. O.); Laziev, EM (Laziev, E. M.); Movsisyan, ML
(Movsisyan, M. L.)
Title: Driver of THz-FELs Based on the YerPhI 20 MeV Linear Accelerator
SCIENCES, 43 (5): 245-250 OCT 2008
Abstract: An opportunity of using the 20 MeV Linac at YerPhI as a driver of THz-FELs is
considered. The basic parameters of the Linac and FELs are given. Requirements to the electron
beam and Linac systems are determined.
ISSN: 1068-3372
DOI: 10.3103/S106833720805006X
Record 36 of 499
Author(s): Mkrtchyan, HG (Mkrtchyan, H. G.)
Title: Kinematic Correction to the Cross-Section of Semi-Inclusive pi-Meson Electroproduction
in the Low-Energy Range
SCIENCES, 43 (6): 266-270 DEC 2008
Abstract: The Q(2)-dependence of the cross-section of semi-inclusive pi-meson
electroproduction has been studied in the low-energy range covering the nucleonic resonances. It
has been found that the Q(2)-dependence of these data differs from the behavior of the factorized
cross-section for high energies. The analysis of ratios of measured to model-calculated crosssections renders a simple polynomial function for introducing the Q(2)-correction into the crosssection. This additional correction provides much better agreement between the experimental
and calculated data.
ISSN: 1068-3372
DOI: 10.3103/S1068337208060029
Record 37 of 499
Author(s): Hovhannisyan, VV (Hovhannisyan, V. V.)
Title: Multidimensional Mappings in Antiferromagnetic Models and Lyapunov Exponents with
the Magnetization Plateau
SCIENCES, 43 (6): 301-305 DEC 2008
Abstract: We consider the Heisenberg model with two- and three-spin exchange interactions on
a recursive ladder in a strong magnetic field. Recurrent relations for branches of the partition
function of the Ising model with two- and three-spin exchange interactions are deduced. As a
recursive lattice the zigzag ladder is chosen. In the antiferromagnetic case magnetization plateau
are observed at low temperatures. Lyapunov exponents for the threedimensional mapping at
low temperatures are calculated. It is shown that for some values of two- and three-spin
exchange parameters in the antiferromagnetic case the maximum of the Lyapunov exponent
approaches zero.
ISSN: 1068-3372
DOI: 10.3103/S106833720806008X
Record 38 of 499
Author(s): Bznuni, SA (Bznuni, S. A.); Zhamkochyan, VM (Zhamkochyan, V. M.);
Guiragossian, ZG (Guiragossian, Z. G.); Khudaverdyan, AG (Khudaverdyan, A. G.)
Title: Optimized Booster in Cascade Electronuclear Systems
SCIENCES, 43 (6): 306-310 DEC 2008
Abstract: With use of Monte-Carlo simulation technique, we study a cascade electronuclear
system containing fast booster with optimized distribution of fuel enrichment. It was shown that
zoning of fuel with increase in its enrichment towards periphery of the active zone of the booster
leads to considerable enhancement of the booster efficiency and, as a consequence, to essential
increase in the gain factor of the electronuclear complex. Perspectives of employing electron
accelerators for control of such systems are considered.
ISSN: 1068-3372
DOI: 10.3103/S1068337208060091
Record 39 of 499
Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.); Boisson, C (Boisson, C.); Bochow, V
(Bochow, V.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J
(Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I
A. C.); Coignet, G (Coignet, G.); Costamante, L (Costamante, L.); Dalton, M (Dalton, M.);
Degrange, B (Degrange, B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai,
A (Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F
(Dubois, F.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.); Egberts, K
(Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier, C
(Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A (Foerster, A.);
Fontaine, G (Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.); Gallant, YA
(Gallant, Y. A.); Gerard, L (Gerard, L.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J.
F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C (Hadjichristidis, C.); Hauser,
D (Hauser, D.); Hauser, M (Hauser, M.); Heinz, S (Heinz, S.); Heinzelmann, G (Heinzelmann,
G.); Henri, G (Henri, G.); Hermann, G (Hermann, G.); Hinton, JA (Hinton, J. A.); Hoffmann, A
(Hoffmann, A.); Hofmann, W (Hofmann, W.); Holleran, M (Holleran, M.); Hoppe, S (Hoppe,
S.); Horns, D (Horns, D.); Jacholkowska, A (Jacholkowska, A.); de Jager, OC (de Jager, O. C.);
Jung, I (Jung, I.); Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann, S.); Kendziorra, E
(Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khangulyan, D (Khangulyan, D.); Khelifi,
B (Khelifi, B.); Keogh, D (Keogh, D.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.);
Lamanna, G (Lamanna, G.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Marandon, V
(Marandon, V.); Martin, JM (Martin, J. M.); Martineau-Huynh, O (Martineau-Huynh, O.);
Marcowith, A (Marcowith, A.); Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.);
Medina, C (Medina, C.); Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); Naumann-Godo,
M (Naumann-Godo, M.); de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nekrassov, D
Title: A SEARCH FOR A DARK MATTER ANNIHILATION SIGNAL TOWARD THE
CANIS MAJOR OVERDENSITY WITH HESS
Source: ASTROPHYSICAL JOURNAL, 691 (1): 175-181 JAN 20 2009
Abstract: A search for a dark matter (DM) annihilation signal into gamma-rays toward the
direction of the Canis Major (CMa) overdensity is presented. The nature of CMa is still
controversial and one scenario represents it as a dwarf galaxy, making it an interesting candidate
for DM annihilation searches. A total of 9.6 hr of high-quality data were collected with the
H.E.S.S. array of Imaging Atmospheric Cherenkov Telescopes, and no evidence for a very high
energy gamma-ray signal is found. Upper limits on the CMa dwarf galaxy mass of the order of
10(9) M-circle dot are derived at the 95% confidence level (CL) assuming neutralino masses in
the range 500 GeV-10 TeV and relatively large annihilation cross sections. Constraints on the
velocity-weighted annihilation cross section <sigma upsilon > are calculated for specific weakly
interacting massive-particle scenarios, using a Navarro-Frenk-White model for the DM halo
profile and taking advantage of numerical simulations of hierarchical structure formation.
Assuming a total halo mass of 3 x 10(8) M-circle dot, 95% CL exclusion limits of the order of 5
x 10(-24) cm(3) s(-1) are reached in the 500 GeV-10 TeV DM particle mass interval.
ISSN: 0004-637X
DOI: 10.1088/0004-637X/691/1/175
Record 40 of 499
Author(s): Gevorkian, SG (Gevorkian, S. G.); Allahverdyan, AE (Allahverdyan, A. E.);
Gevorgyan, DS (Gevorgyan, D. S.); Simonian, AL (Simonian, A. L.)
Title: Thermal (In)Stability of Type I Collagen Fibrils
Source: PHYSICAL REVIEW LETTERS, 102 (4): Art. No. 048101 JAN 30 2009
Abstract: We measured the Young's modulus at temperatures ranging from 20 to 100 degrees C
for a collagen fibril that is taken from a rat's tendon. The hydration change under heating and the
damping decrement were measured as well. At physiological temperatures 25 to 45 degrees C,
the Young's modulus decreases, which can be interpreted as an instability of the collagen. For
temperatures between 45 and 80 degrees C, the Young's modulus first stabilizes and then
increases when the temperature is increased. The hydrated water content and the damping
decrement have strong maximums in the interval 70 to 80 degrees C indicating complex
intermolecular structural changes in the fibril. All these effects disappear after heat-denaturation
of the sample at 120 degrees C. Our main achievement is a five-stage mechanism by which the
instability of a single collagen at physiological temperatures is compensated by the interaction
between collagen molecules.
ISSN: 0031-9007
Record 41 of 499
Author(s): Laveissiere, G (Laveissiere, G.); Degrande, N (Degrande, N.); Jaminion, S
(Jaminion, S.); Jutier, C (Jutier, C.); Todor, L (Todor, L.); Di Salvo, R (Di Salvo, R.); Van
Hoorebeke, L (Van Hoorebeke, L.); Alexa, LC (Alexa, L. C.); Anderson, BD (Anderson, B. D.);
Aniol, KA (Aniol, K. A.); Arundell, K (Arundell, K.); Audit, G (Audit, G.); Auerbach, L
(Auerbach, L.); Baker, FT (Baker, F. T.); Baylac, M (Baylac, M.); Berthot, J (Berthot, J.);
Bertin, PY (Bertin, P. Y.); Bertozzi, W (Bertozzi, W.); Bimbot, L (Bimbot, L.); Boeglin, WU
(Boeglin, W. U.); Brash, EJ (Brash, E. J.); Breton, V (Breton, V.); Breuer, H (Breuer, H.);
Burtin, E (Burtin, E.); Calarco, JR (Calarco, J. R.); Cardman, LS (Cardman, L. S.); Cavata, C
(Cavata, C.); Chang, CC (Chang, C.-C.); Chen, JP (Chen, J.-P.); Chudakov, E (Chudakov, E.);
Cisbani, E (Cisbani, E.); Dale, DS (Dale, D. S.); de Jager, CW (de Jager, C. W.); De Leo, R (De
Leo, R.); Deur, A (Deur, A.); d'Hose, N (d'Hose, N.); Dodge, GE (Dodge, G. E.); Domingo, JJ
(Domingo, J. J.); Elouadrhiri, L (Elouadrhiri, L.); Epstein, MB (Epstein, M. B.); Ewell, LA
(Ewell, L. A.); Finn, JM (Finn, J. M.); Fissum, KG (Fissum, K. G.); Fonvieille, H (Fonvieille,
H.); Fournier, G (Fournier, G.); Frois, B (Frois, B.); Frullani, S (Frullani, S.); Furget, C (Furget,
C.); Gao, H (Gao, H.); Gao, J (Gao, J.); Garibaldi, F (Garibaldi, F.); Gasparian, A (Gasparian,
A.); Gilad, S (Gilad, S.); Gilman, R (Gilman, R.); Glamazdin, A (Glamazdin, A.); Glashausser,
C (Glashausser, C.); Gomez, J (Gomez, J.); Gorbenko, V (Gorbenko, V.); Grenier, P (Grenier,
P.); Guichon, PAM (Guichon, P. A. M.); Hansen, JO (Hansen, J. O.); Holmes, R (Holmes, R.);
Holtrop, M (Holtrop, M.); Howell, C (Howell, C.); Huber, GM (Huber, G. M.); Hyde, CE (Hyde,
C. E.); Incerti, S (Incerti, S.); Iodice, M (Iodice, M.); Jardillier, J (Jardillier, J.); Jones, MK
(Jones, M. K.); Kahl, W (Kahl, W.); Kamalov, S (Kamalov, S.); Kato, S (Kato, S.); Katramatou,
AT (Katramatou, A. T.); Kelly, JJ (Kelly, J. J.); Kerhoas, S (Kerhoas, S.); Ketikyan, A
(Ketikyan, A.); Khayat, M (Khayat, M.); Kino, K (Kino, K.); Kox, S (Kox, S.); Kramer, LH
(Kramer, L. H.); Kumar, KS (Kumar, K. S.); Kumbartzki, G (Kumbartzki, G.); Kuss, M (Kuss,
M.); Leone, A (Leone, A.); LeRose, JJ (LeRose, J. J.); Liang, M (Liang, M.); Lindgren, RA
(Lindgren, R. A.); Liyanage, N (Liyanage, N.); Lolos, GJ (Lolos, G. J.); Lourie, RW (Lourie, R.
W.); Madey, R (Madey, R.); Maeda, K (Maeda, K.); Malov, S (Malov, S.); Manley, DM
(Manley, D. M.); Marchand, C (Marchand, C.); Marchand, D (Marchand, D.); Margaziotis, DJ
(Margaziotis, D. J.); Markowitz, P (Markowitz, P.); Marroncle, J (Marroncle, J.); Martino, J
(Martino, J.); McCormick, K (McCormick, K.); McIntyre, J (McIntyre, J.); Mehrabyan, S
(Mehrabyan, S.); Merchez, F (Merchez, F.); Meziani, ZE (Meziani, Z. E.); Michaels, R
(Michaels, R.); Miller, GW (Miller, G. W.); Mougey, JY (Mougey, J. Y.); Nanda, SK (Nanda, S.
K.); Neyret, D (Neyret, D.); Offermann, EAJM (Offermann, E. A. J. M.); Papandreou, Z
(Papandreou, Z.); Perdrisat, CF (Perdrisat, C. F.); Perrino, R (Perrino, R.); Petratos, GG
(Petratos, G. G.); Platchkov, S (Platchkov, S.); Pomatsalyuk, R (Pomatsalyuk, R.); Prout, DL
(Prout, D. L.); Punjabi, VA (Punjabi, V. A.); Pussieux, T (Pussieux, T.); Quemener, G
(Quemener, G.); Ransome, RD (Ransome, R. D.); Ravel, O (Ravel, O.); Real, JS (Real, J. S.);
Renard, F (Renard, F.); Roblin, Y (Roblin, Y.); Rowntree, D (Rowntree, D.); Rutledge, G
(Rutledge, G.); Rutt, PM (Rutt, P. M.); Saha, A (Saha, A.); Saito, T (Saito, T.); Sarty, AJ (Sarty,
A. J.); Serdarevic, A (Serdarevic, A.); Smith, T (Smith, T.); Smirnov, G (Smirnov, G.); Soldi, K
(Soldi, K.); Sorokin, P (Sorokin, P.); Souder, PA (Souder, P. A.); Suleiman, R (Suleiman, R.);
Templon, JA (Templon, J. A.); Terasawa, T (Terasawa, T.); Tiator, L (Tiator, L.); Tieulent, R
(Tieulent, R.); Tomasi-Gustaffson, E (Tomasi-Gustaffson, E.); Tsubota, H (Tsubota, H.); Ueno,
H (Ueno, H.); Ulmer, PE (Ulmer, P. E.); Urciuoli, GM (Urciuoli, G. M.); Van de Vyver, R (Van
de Vyver, R.); Van der Meer, RLJ (Van der Meer, R. L. J.); Vernin, P (Vernin, P.); Vlahovic, B
(Vlahovic, B.); Voskanyan, H (Voskanyan, H.); Voutier, E (Voutier, E.); Watson, JW (Watson,
J. W.); Weinstein, LB (Weinstein, L. B.); Wijesooriya, K (Wijesooriya, K.); Wilson, R (Wilson,
R.); Wojtsekhowski, BB (Wojtsekhowski, B. B.); Zainea, DG (Zainea, D. G.); Zhang, WM
(Zhang, W.-M.); Zhao, J (Zhao, J.); Zhou, ZL (Zhou, Z.-L.)
Group Author(s): Jefferson Lab Hall A Collaboration
Title: Virtual Compton scattering and neutral pion electroproduction in the resonance region up
to the deep inelastic region at backward angles
Source: PHYSICAL REVIEW C, 79 (1): Art. No. 015201 JAN 2009
Abstract: We have made the first measurements of the virtual Compton scattering (VCS)
process via the H(e, e'p). exclusive reaction in the nucleon resonance region, at backward angles.
Results are presented for the W-dependence at fixed Q(2) = 1 GeV2 and for the Q(2) dependence
at fixed W near 1.5 GeV. The VCS data show resonant structures in the first and second
resonance regions. The observed Q(2) dependence is smooth. The measured ratio of H(e, e'p). to
H(e, e'p) pi(0) cross sections emphasizes the different sensitivity of these two reactions to the
various nucleon resonances. Finally, when compared to real Compton scattering (RCS) at high
energy and large angles, our VCS data at the highest W (1.8-1.9 GeV) show a striking Q(2)
independence, which may suggest a transition to a perturbative scattering mechanism at the
quark level.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.79.015201
Record 42 of 499
Author(s): Fedotov, GV (Fedotov, G. V.); Mokeev, VI (Mokeev, V. I.); Burkert, VD (Burkert,
V. D.); Elouadrhiri, L (Elouadrhiri, L.); Golovatch, EN (Golovatch, E. N.); Ishkhanov, BS
(Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Shvedunov, NV (Shvedunov, N. V.); Adams, G
(Adams, G.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi,
M (Anghinolfi, M.); Asavapibhop, B (Asavapibhop, B.); Asryan, G (Asryan, G.); Avakian, H
(Avakian, H.); Baghdasaryan, H (Baghdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J.
P.); Baltzell, NA (Baltzell, N. A.); Batourine, V (Batourine, V.); Battaglieri, M (Battaglieri, M.);
Benmouna, N (Benmouna, N.); Biselli, AS (Biselli, A. S.); Bonner, BE (Bonner, B. E.);
Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.);
Branford, D (Branford, D.); Brooks, WK (Brooks, W. K.); Bultmann, S (Bueltmann, S.);
Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.);
Carman, DS (Carman, D. S.); Carnahan, B (Carnahan, B.); Chen, S (Chen, S.); Cole, PL (Cole,
P. L.); Coltharp, P (Coltharp, P.); Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crannell,
H (Crannell, H.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dashyan, NB
(Dashyan, N. B.); De Sanctis, E (De Sanctis, E.); De Vita, R (De Vita, R.); Degtyarenko, PV
(Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Dharmawardane, KV
(Dharmawardane, K. V.); Dickson, R (Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge,
G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.); Dytman,
S (Dytman, S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K.
S.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.); Feuerbach, RJ (Feuerbach, R. J.); Forest,
TA (Forest, T. A.); Funsten, H (Funsten, H.); Gavalian, G (Gavalian, G.); Gevorgyan, NG
(Gevorgyan, N. G.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girod,
FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gothe, RW (Gothe, R. W.); Griffioen, KA
(Griffioen, K. A.); Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L
(Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hardie, J (Hardie, J.);
Hassall, N (Hassall, N.); Hersman, FW (Hersman, F. W.); Hicks, K (Hicks, K.); Hleiqawi, I
(Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hu, J (Hu, J.); Huertas, M (Huertas, M.); Hyde, CE
(Hyde, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ito, MM (Ito, M. M.); Jenkins,
D (Jenkins, D.); Jo, HS (Jo, H. S.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.); Kellie, JD
(Kellie, J. D.); Khandaker, M (Khandaker, M.); Kim, KY (Kim, K. Y.); Kim, K (Kim, K.); Kim,
W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko, A (Klimenko, A.);
Klusman, M (Klusman, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L. H.); Kubarovsky, V
(Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, S (Kuleshov, S.);
Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.);
Lawrence, D (Lawrence, D.); Lee, T (Lee, T.); Livingston, K (Livingston, K.); Markov, N
(Markov, N.); McCracken, M (McCracken, M.); McKinnon, B (McKinnon, B.); McNabb, JWC
(McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer,
CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mineeva, T (Mineeva,
T.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.);
Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.); Mueller, J (Mueller, J.); Mutchler, GS
(Mutchler, G. S.); Nadel-Turonski, P (Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.);
Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.);
Niczyporuk, BB (Niczyporuk, B. B.); Niyazov, RA (Niyazov, R. A.); O'Rielly, GV (O'Rielly, G.
V.); Osipenko, M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.);
Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk,
N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.);
Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu, D.); Raue, BA
(Raue, B. A.); Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.);
Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Rowntree, D (Rowntree, D.); Rubin, PD (Rubin, P.
D.); Sabatie, F (Sabatie, F.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J. P.); Sapunenko, V
(Sapunenko, V.); Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian,
YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shaw, J (Shaw, J.); Smith, ES (Smith, E. S.);
Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Stavinsky, A (Stavinsky, A.); Stepanyan, S
(Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Stopani, K (Stopani, K.);
Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Taylor, S (Taylor, S.); Tedeschi, DJ (Tedeschi,
D. J.); Thompson, R (Thompson, R.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko,
S.); Todor, L (Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard,
M. F.); Vlassov, AV (Vlassov, A. V.); Weinstein, LB (Weinstein, L. B.); Weygand, DP
(Weygand, D. P.); Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH (Wood, M.
H.); Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.)
Title: Electroproduction of p pi(+)pi(-) off protons at 0.2 < Q(2) < 0.6 GeV2 and 1.3 < W < 1.57
GeV with the CLAS detector
Abstract: This paper reports on the most comprehensive data set obtained on differential and
fully integrated cross sections for the process ep. e -> p pi(+)pi(-). The data were collected with
the CLAS detector at Jefferson Laboratory. Measurements were carried out in the as yet
unexplored kinematic region of photon virtuality 0.2 < Q(2) < 0.6 GeV2 and invariant mass of
the final hadron system W from 1.3 to 1.57 GeV. For the first time, nine independent one-fold
differential cross sections were determined in each bin of W and Q(2) covered by the
measurements. A phenomenological analysis of the data allowed us to establish the most
significant mechanisms contributing to the reaction. The nonresonant mechanisms account for a
major part of cross sections. However, we find sensitivity to s-channel excitations of low-mass
nucleon resonances, especially to the N(1440)P-11 and N(1520)D-13 states in kinematic
dependencies of the one-fold differential cross sections.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.79.015204
Record 43 of 499
Author(s): Bosted, P (Bosted, P.); Dunne, J (Dunne, J.); Lee, CA (Lee, C. A.); Junnarkar, P
(Junnarkar, P.); Strikman, M (Strikman, M.); Arrington, J (Arrington, J.); Asaturyan, R
(Asaturyan, R.); Benmokhtar, F (Benmokhtar, F.); Christy, ME (Christy, M. E.); Chudakov, E
(Chudakov, E.); Clasie, B (Clasie, B.); Connell, SH (Connell, S. H.); Dalton, MM (Dalton, M.
M.); Daniel, A (Daniel, A.); Day, D (Day, D.); Dutta, D (Dutta, D.); Ent, R (Ent, R.); Fomin, N
(Fomin, N.); Gaskell, D (Gaskell, D.); Horn, T (Horn, T.); Kalantarians, N (Kalantarians, N.);
Keppel, CE (Keppel, C. E.); Kiselev, D (Kiselev, D.); Meekins, DG (Meekins, D. G.);
Mkrtchyan, H (Mkrtchyan, H.); Navasardyan, T (Navasardyan, T.); Roche, J (Roche, J.);
Rodriguez, VM (Rodriguez, V. M.); Seely, J (Seely, J.); Slifer, K (Slifer, K.); Tajima, S (Tajima,
S.); Testa, G (Testa, G.); Trojer, R (Trojer, Roman); Wesselmann, FR (Wesselmann, F. R.);
Wood, SA (Wood, S. A.); Zheng, XC (Zheng, X. C.)
Title: Search for sub-threshold photoproduction of J/psi mesons
Abstract: A search was made for sub-threshold J/psi production from a carbon target by using a
mixed real and quasireal Bremsstrahlung photon beam with an endpoint energy of 5.76 GeV. No
events were observed, which is consistent with predictions under the assumption of quasifree
production. The results place limits on exotic mechanisms that strongly enhance quasifree
production.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.79.015209
Record 44 of 499
Author(s): Antonosyan, D (Antonosyan, Diana); Bellucci, S (Bellucci, Stefano); Ohanyan, V
(Ohanyan, Vadim)
Title: Exactly solvable Ising-Heisenberg chain with triangular XXZ-Heisenberg plaquettes
Source: PHYSICAL REVIEW B, 79 (1): Art. No. 014432 JAN 2009
Abstract: A mixed Ising-Heisenberg spin system consisting of triangular XXZ-Heisenberg spin
clusters assembled into a chain by alternating with Ising spins interacting to all three spins in the
triangle is considered. The exact solution of the model is given in terms of the generalized
decoration-iteration map and within the transfer-matrix technique. Exact expressions for
thermodynamic functions are derived. Ground-state phase diagrams and thermodynamic and
magnetic properties of the system are examined.
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.79.014432
Record 45 of 499
Author(s): Lorikyan, MP (Lorikyan, M. P.)
Title: Microanode image porous dielectric detector
Source: JOURNAL OF APPLIED PHYSICS, 105 (2): Art. No. 024503 JAN 15 2009
Abstract: Porous dielectric detectors (PDDs) can expand the methods of image registration of
charged particles, neutrons, and x rays to a great extent; however they are not sufficiently studied
yet. Recently it was revealed that multiwire and microstrip PDDs operate stably in dc mode. This
paper presents a new two-dimensional microanode image PDD (MAIPDD). Also, preliminary
results of investigation of MAIPDD for 5.9 keV x rays and two types of microstrip PDDs are
presented.
ISSN: 0021-8979
DOI: 10.1063/1.3068200
Record 46 of 499
Author(s): Arakelyan, VB (Arakelyan, V. B.); Mamasakhlisov, ES (Mamasakhlisov, E. Sh.);
Morozov, VF (Morozov, V. F.); Navoyan, ZE (Navoyan, Z. E.); Arakelyan, AV (Arakelyan, A.
V.)
Title: Stochastic Model of Adsorption of Particles on Macromolecules at an Arbitrary Filling
SCIENCES, 43 (1): 48-52 FEB 2008
Abstract: The theory of adsorption of particles on macromolecules is considered. The theory is
based on the notion that the adsorption is a discrete Markovian process. In the context of this
theory the average number and the variance of the number of ligands adsorbed on
macromolecules are calculated exactly. The results are compared with the frequently used
approximation where the number of adsorbed particles is smaller than that in the solution. It is
shown that for small values of the equilibrium constant the exact and approximate values
coincide practically.
ISSN: 1068-3372
DOI: 10.3103/S106833720801009x
Record 47 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Kocharyan, AA (Kocharyan, A. A.)
Title: Porosity criterion for hyperbolic voids and the cosmic microwave background
Source: ASTRONOMY & ASTROPHYSICS, 493 (3): L61-L63 JAN 2009
Abstract: The degree of randomness in the cosmic microwave background (CMB) maps has
been shown to be measurable and indicative of the hyperbolic effect of voids on the propagation
of the photon beams. In terms of an introduced porosity parameter, we now obtain the criterion
for a hyperbolicity due to domination of voids in the line-of-sight direction. The criterion seems
to be supported by the parameters of 30 Mpc scale voids revealed by the galactic redshift
surveys. The importance of the geometrical effect of the voids is also due to their possible role in
the temperature independent ellipticity of the excursion sets, as well as in the nature of dark
energy. The role of possible larger scale inhomogeneities, from superclusters to semi-Hubble
scale, in this effect remains yet unclear.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200811317
Record 48 of 499
Author(s): Donnarumma, I (Donnarumma, I.); Vittorini, V (Vittorini, V.); Vercellone, S
(Vercellone, S.); Del Monte, E (Del Monte, E.); Feroci, M (Feroci, M.); D'Ammando, F
(D'Ammando, F.); Pacciani, L (Pacciani, L.); Chen, AW (Chen, A. W.); Tavani, M (Tavani, M.);
Bulgarelli, A (Bulgarelli, A.); Giuliani, A (Giuliani, A.); Longo, F (Longo, F.); Pucella, G
(Pucella, G.); Argan, A (Argan, A.); Barbiellini, G (Barbiellini, G.); Boffelli, F (Boffelli, F.);
Caraveo, P (Caraveo, P.); Cattaneo, PW (Cattaneo, P. W.); Cocco, V (Cocco, V.); Costa, E
(Costa, E.); De Paris, G (De Paris, G.); Di Cocco, G (Di Cocco, G.); Evangelista, Y (Evangelista,
Y.); Fiorini, M (Fiorini, M.); Froysland, T (Froysland, T.); Frutti, M (Frutti, M.); Fuschino, F
(Fuschino, F.); Galli, M (Galli, M.); Gianotti, F (Gianotti, F.); Labanti, C (Labanti, C.); Lapshov,
I (Lapshov, I.); Lazzarotto, F (Lazzarotto, F.); Lipari, P (Lipari, P.); Marisaldi, M (Marisaldi,
M.); Mastropietro, M (Mastropietro, M.); Mereghetti, S (Mereghetti, S.); Morelli, E (Morelli,
E.); Morselli, A (Morselli, A.); Pellizzoni, A (Pellizzoni, A.); Perotti, F (Perotti, F.); Picozza, P
(Picozza, P.); Porrovecchio, G (Porrovecchio, G.); Prest, M (Prest, M.); Rapisarda, M
(Rapisarda, M.); Rappoldi, A (Rappoldi, A.); Rubini, A (Rubini, A.); Soffitta, P (Soffitta, P.);
Trifoglio, M (Trifoglio, M.); Trois, A (Trois, A.); Vallazza, E (Vallazza, E.); Zambra, A
(Zambra, A.); Zanello, D (Zanello, D.); Pittori, C (Pittori, C.); Santolamazza, P (Santolamazza,
P.); Verrecchia, F (Verrecchia, F.); Giommi, P (Giommi, P.); Colafrancesco, S (Colafrancesco,
S.); Salotti, L (Salotti, L.); Villata, M (Villata, M.); Raiteri, CM (Raiteri, C. M.); Chen, WP
(Chen, W. P.); Efimova, NV (Efimova, N. V.); Jordan, B (Jordan, B.); Konstantinova, TS
(Konstantinova, T. S.); Koptelova, E (Koptelova, E.); Kurtanidze, OM (Kurtanidze, O. M.);
Larionov, VM (Larionov, V. M.); Ros, JA (Ros, J. A.); Sadun, AC (Sadun, A. C.); Anderhub, H
(Anderhub, H.); Antonelli, LA (Antonelli, L. A.); Antoranz, P (Antoranz, P.); Backes, M
(Backes, M.); Baixeras, C (Baixeras, C.); Balestra, S (Balestra, S.); Barrio, JA (Barrio, J. A.);
Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Gonzalez, JB (Becerra Gonzalez, J.); Becker,
JK (Becker, J. K.); Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bernardini, E
(Bernardini, E.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.); Bonnoli, G (Bonnoli, G.);
Bordas, P (Bordas, P.); Tridon, DB (Tridon, D. Borla); Bosch-Ramon, V (Bosch-Ramon, V.);
Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M (Camara, M.); Carmona, E (Carmona,
E.); Chilingarian, A (Chilingarian, A.); Commichau, S (Commichau, S.); Contreras, JL
(Contreras, J. L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.); Covino, S (Covino,
S.); Curtef, V (Curtef, V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); Del Pozo, ED
(De Cea Del Pozo, E.); Reyes, RD (Reyes, R. De Los); De Lotto, B (De Lotto, B.); De Maria, M
(De Maria, M.); De Sabata, F (De Sabata, F.); Mendez, CD (Delgado Mendez, C.); Dominguez,
A (Dominguez, A.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Elsaesser, D (Elsaesser, D.);
Errando, M (Errando, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R
(Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Galante, N (Galante, N.); Lopez,
RJG (Garcia Lopez, R. J.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F
(Goebel, F.); Hadasch, D (Hadasch, D.); Hayashida, M (Hayashida, M.); Herrero, A (Herrero,
A.); Hohne-Monch, D (Hoehne-Moench, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S
(Huber, S.); Jogler, T (Jogler, T.); Kranich, D (Kranich, D.); La Barbera, A (La Barbera, A.);
Laille, A (Laille, A.); Leonardo, E (Leonardo, E.); Lindfors, E (Lindfors, E.); Lombardi, S
(Lombardi, S.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.);
Maneva, G (Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.);
Maraschi, L (Maraschi, L.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D
(Mazin, D.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.);
Mirzoyan, R (Mirzoyan, R.); Moldon, J (Moldon, J.); Moles, M (Moles, M.); Moralejo, A
(Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Oya, I
(Oya, I.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen, M.);
Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-Torres, MA
(Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Prada, F (Prada, F.);
Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode, W
(Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.);
Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.); Salvati, M
(Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.); Sartori, P (Sartori, P.); Satalecka, K
(Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.); Schweizer, T (Schweizer,
T.); Shayduk, M (Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro,
N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A (Sillanpaa, A.);
Sitarek, J (Sitarek, J.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A
(Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Tavecchio, F (Tavecchio, F.);
Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Tluczykont,
M (Tluczykont, M.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.);
Venturini, A (Venturini, A.); Vitale, V (Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W
(Wittek, W.); Zabalza, V (Zabalza, V.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.);
Zapatero, J (Zapatero, J.); Acciari, V (Acciari, V.); Aliu, E (Aliu, E.); Arlen, T (Arlen, T.);
Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Bradbury, SM (Bradbury, S. M.);
Buckley, JH (Buckley, J. H.); Bugaev, V (Bugaev, V.); Butt, Y (Butt, Y.); Byrum, K (Byrum,
K.); Cannon, A (Cannon, A.); Cesarini, A (Cesarini, A.); Chow, YC (Chow, Y. C.); Ciupik, L
(Ciupik, L.); Cogan, P (Cogan, P.); Colin, P (Colin, P.); Cui, W (Cui, W.); Daniel, MK (Daniel,
M. K.); Dickherber, R (Dickherber, R.); Duke, C (Duke, C.); Ergin, T (Ergin, T.); Fegan, SJ
(Fegan, S. J.); Finley, JP (Finley, J. P.); Finnegan, G (Finnegan, G.); Fortin, P (Fortin, P.);
Furniss, A (Furniss, A.); Gall, D (Gall, D.); Gillanders, GH (Gillanders, G. H.); Guenette, R
(Guenette, R.); Gyuk, G (Gyuk, G.); Grube, J (Grube, J.); Hanna, D (Hanna, D.); Holder, J
(Holder, J.); Horan, D (Horan, D.); Hui, CM (Hui, C. M.); Humensky, TB (Humensky, T.
Brian); Imran, A (Imran, A.); Kaaret, P (Kaaret, P.); Karlsson, N (Karlsson, N.); Kertzman, M
(Kertzman, M.); Kieda, D (Kieda, D.); Kildea, J (Kildea, J.); Konopelko, A (Konopelko, A.);
Krawczynski, H (Krawczynski, H.); Krennrich, F (Krennrich, F.); Lang, MJ (Lang, M. J.);
LeBohec, S (LeBohec, S.); Maier, G (Maier, G.); McCann, A (McCann, A.); McCutcheon, M
(McCutcheon, M.); Milovanovic, A (Milovanovic, A.); Moriarty, P (Moriarty, P.); Nagai, T
(Nagai, T.); Ong, RA (Ong, R. A.); Otte, AN (Otte, A. N.); Pandel, D (Pandel, D.); Perkins, JS
(Perkins, J. S.); Pichel, A (Pichel, A.); Pohl, M (Pohl, M.); Ragan, K (Ragan, K.); Reyes, LC
(Reyes, L. C.); Reynolds, PT (Reynolds, P. T.); Roache, E (Roache, E.); Rose, HJ (Rose, H. J.);
Schroedter, M (Schroedter, M.); Sembroski, GH (Sembroski, G. H.); Smith, AW (Smith, A. W.);
Steele, D (Steele, D.); Swordy, SP (Swordy, S. P.); Theiling, M (Theiling, M.); Toner, JA
(Toner, J. A.); Valcarcel, L (Valcarcel, L.); Varlotta, A (Varlotta, A.); Wakely, SP (Wakely, S.
P.); Ward, JE (Ward, J. E.); Weekes, TC (Weekes, T. C.); Weinstein, A (Weinstein, A.);
Williams, DA (Williams, D. A.); Wissel, S (Wissel, S.); Wood, M (Wood, M.); Zitzer, B (Zitzer,
B.)
Group Author(s): AGILE Team; GASP-WEBT Team; MAGIC Collaboration; VERITAS
Collaboration
Title: THE JUNE 2008 FLARE OF MARKARIAN 421 FROM OPTICAL TO TeV ENERGIES
Source: ASTROPHYSICAL JOURNAL LETTERS, 691 (1): L13-L19 JAN 20 2009
Abstract: We present optical, X-ray, high-energy ((sic) 30 GeV) and very high energy ((sic) 100
GeV; VHE) observations of the high-frequency peaked blazar Mrk 421 taken between 2008 May
24 and June 23. A high-energy gamma-ray signal was detected by AGILE with root TS = 4.5
between June 9 and 15, with F(E > 100 MeV) = 42(-12)(+14) x 10(-8) photons cm(-2) s(-1). This
flaring state is brighter than the average flux observed by EGRET by a factor of similar to 3, but
still consistent with the highest EGRET flux. In hard X-rays (20-60 keV) SuperAGILE resolved
a five-day flare (June 9-15) peaking at similar to 55 mCrab. SuperAGILE, RXTE/ASM and
Swift/BAT data show a correlated flaring structure between soft and hard X-rays. Hints of the
same flaring behavior are also detected in the simultaneous optical data provided by the GASPWEBT. A Swift/XRT observation near the flaring maximum revealed the highest 2-10 keV flux
ever observed from this source, of 2.6 x 10(-9) erg cm(-2) s(-1) (i.e. > 100 mCrab). A peak
synchrotron energy of similar to 3 keV was derived, higher than typical values of similar to 0.5-1
keV. VHE observations with MAGIC and VERITAS between June 6 and 8 showed the flux
peaking in a bright state, well correlated with the X-rays. This extraordinary set of simultaneous
data, covering a 12-decade spectral range, allowed for a deep analysis of the spectral energy
distribution as well as of correlated light curves. The gamma-ray flare can be interpreted within
the framework of the synchrotron self-Compton model in terms of a rapid acceleration of leptons
in the jet.
DOI: 10.1088/0004-637X/691/1/L13
Record 49 of 499
Author(s): Aliu, E (Aliu, E.); Anderhub, H (Anderhub, H.); Antonelli, LA (Antonelli, L. A.);
Antoranz, P (Antoranz, P.); Backes, M (Backes, M.); Baixeras, C (Baixeras, C.); Balestra, S
(Balestra, S.); Barrio, JA (Barrio, J. A.); Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.);
Gonzalez, JB (Becerra Gonzalez, J.); Becker, JK (Becker, J. K.); Bednarek, W (Bednarek, W.);
Berger, K (Berger, K.); Bernardini, E (Bernardini, E.); Biland, A (Biland, A.); Bock, RK (Bock,
R. K.); Bonnoli, G (Bonnoli, G.); Bordas, P (Bordas, P.); Tridon, DB (Borla Tridon, D.); BoschRamon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M
(Camara, M.); Carmona, E (Carmona, E.); Chilingarian, A (Chilingarian, A.); Commichau, S
(Commichau, S.); Contreras, JL (Contreras, J. L.); Cortina, J (Cortina, J.); Costado, MT
(Costado, M. T.); Covino, S (Covino, S.); Curtef, V (Curtef, V.); Dazzi, F (Dazzi, F.); De
Angelis, A (De Angelis, A.); del Pozo, ED (De Cea del Pozo, E.); de los Reyes, R (de los Reyes,
R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De Sabata, F (De Sabata, F.);
Mendez, CD (Delgado Mendez, C.); Dominguez, A (Dominguez, A.); Dorner, D (Dorner, D.);
Doro, M (Doro, M.); Elsaesser, D (Elsaesser, D.); Errando, M (Errando, M.); Ferenc, D (Ferenc,
D.); Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L
(Font, L.); Galante, N (Galante, N.); Lopez, RJG (Garcia Lopez, R. J.); Garczarczyk, M
(Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F (Goebel, F.); Hadasch, D (Hadasch, D.);
Hayashida, M (Hayashida, M.); Herrero, A (Herrero, A.); Hohne-Monch, D (Hoehne-Moench,
D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S (Huber, S.); Jogler, T (Jogler, T.);
Kranich, D (Kranich, D.); La Barbera, A (La Barbera, A.); Laille, A (Laille, A.); Leonardo, E
(Leonardo, E.); Lindfors, E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.);
Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G
(Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Maraschi, L
(Maraschi, L.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.);
Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.); Mirzoyan, R
(Mirzoyan, R.); Moldon, J (Moldon, J.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.);
Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.);
Oya, I (Oya, I.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen,
M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-Torres, MA
(Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Prada, F (Prada, F.);
Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.); Salvati, M
(Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.); Sartori, P (Sartori, P.); Satalecka, K
(Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.); Schweizer, T (Schweizer,
N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A (Sillanpaa, A.);
Sitarek, J (Sitarek, J.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A
Zapatero, J (Zapatero, J.)
Title: DISCOVERY OF A VERY HIGH ENERGY GAMMA-RAY SIGNAL FROM THE 3C
66A/B REGION
Source: ASTROPHYSICAL JOURNAL LETTERS, 692 (1): L29-L33 FEB 10 2009
Abstract: The MAGIC telescope observed the region around the distant blazar 3C 66A for 54.2
hr in 2007 August-December. The observations resulted in the discovery of a gamma-ray source
centered at celestial coordinates R.A. = 2(h)23(m)12(s) and decl.=43 degrees 0'.7 (MAGIC
J0223+430), coinciding with the nearby radio galaxy 3C 66B. A possible association of the
excess with the blazar 3C 66A is discussed. The energy spectrum of MAGIC J0223+430 follows
a power law with a normalization of (1.7 +/- 0.3(stat) +/- 0.6(syst)) x 10(-11) TeV-1 cm(-2) s(-1)
at 300 GeV and a photon index Gamma = -3.10 +/- 0.31(stat) +/- 0.2(syst).
DOI: 10.1088/0004-637X/692/1/L29
Record 50 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); Barres de
Almeida, U (Barres de Almeida, U.); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Becherini, Y
(Becherini, Y.); Behera, B (Behera, B.); Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.);
Boisson, C (Boisson, C.); Bochow, A (Bochow, A.); Borrel, V (Borrel, V.); Braun, I (Braun, I.);
Brion, E (Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik,
T (Bulik, T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan, S.);
Chadwick, PM (Chadwick, P. M.); Charbonnier, A (Charbonnier, A.); Chaves, RCG (Chaves, R.
C. G.); Cheesebrough, A (Cheesebrough, A.); Chounet, LM (Chounet, L. -M.); Clapson, AC
(Clapson, A. C.); Coignet, G (Coignet, G.); Costamante, L (Costamante, L.); Dalton, M (Dalton,
M.); Degrange, B (Degrange, B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H. J.); DjannatiAtai, A (Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.);
Dubois, F (Dubois, F.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.);
(Foerster, A.); Fontaine, G (Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.);
Gallant, YA (Gallant, Y. A.); Gerard, L (Gerard, L.); Giebels, B (Giebels, B.); Glicenstein, JF
(Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C
(Hadjichristidis, C.); Hauser, D (Hauser, D.); Hauser, M (Hauser, M.); Heinz, S (Heinz, S.);
Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.); Hermann, G (Hermann, G.); Hinton,
JA (Hinton, J. A.); Hoffmann, A (Hoffmann, A.); Hofmann, W (Hofmann, W.); Holleran, M
(Holleran, M.); Hoppe, S (Hoppe, S.); Horns, D (Horns, D.); Jacholkowska, A (Jacholkowska,
A.); de Jager, OC (de Jager, O. C.); Jung, I (Jung, I.); Katarzynski, K (Katarzynski, K.);
Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl,
M.); Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D (Keogh, D.); Komin,
N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.); Lenain, JP (Lenain, J. P.); Lohse, T (Lohse, T.); Marandon, V (Marandon, V.); Martin, JM (Martin, J. M.); MartineauHuynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Maurin, D (Maurin, D.);
McComb, TJL (McComb, T. J. L.); Medina, C (Medina, C.); Moderski, R (Moderski, R.);
(Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JF (Olive, J-F.); Wilhelmi, ED (de Ona Wilhelmi, E.);
M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P.
-O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A
Rulten, CB (Rulten, C. B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A
(Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R
S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Skilton, JL (Skilton, J. L.); Sol, H (Sol, H.);
Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp, R.); Stegmann,
C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J.
-P.); Terrier, R (Terrier, R.); Tibolla, O (Tibolla, O.); van Eldik, C (van Eldik, C.); Vasileiadis, G
(Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P (Vincent, P.);
Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S.
J.); Ward, M (Ward, M.); Zdziarski, AA (Zdziarski, A. A.); Zech, A (Zech, A.)
Group Author(s): H ESS Collaboration
Title: Energy Spectrum of Cosmic-Ray Electrons at TeV Energies
Source: PHYSICAL REVIEW LETTERS, 101 (26): Art. No. 261104 DEC 31 2008
Abstract: The very large collection area of ground-based gamma-ray telescopes gives them a
substantial advantage over balloon or satellite based instruments in the detection of very-highenergy (> 600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from
data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric
Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the
measurement of the electron spectrum beyond the range accessible to direct measurements. We
find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to
lower energies.
ISSN: 0031-9007
Record 51 of 499
Author(s): Saakian, DB (Saakian, D. B.)
Title: Evolution models with base substitutions, insertions, deletions, and selection
Source: PHYSICAL REVIEW E, 78 (6): Art. No. 061920 Part 1 DEC 2008
Abstract: The evolution model with parallel mutation-selection scheme is solved for the case
when selection is accompanied by base substitutions, insertions, and deletions. The fitness is
assumed to be either a single-peak function (i.e., having one finite discontinuity) or a smooth
function of the Hamming distance from the reference sequence. The mean fitness is calculated
exactly in large-genome limit. In the case of insertions and deletions the evolution characteristics
depend on the choice of reference sequence.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.78.061920
Record 52 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); De
Almeida, UB (De Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Behera, B
(Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr,
K.); Boisson, C (Boisson, C.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.);
Brucker, J (Brucker, J.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I (Buesching,
I.); Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P. M.);
Chaves, R (Chaves, R.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A. C.);
Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Dalton, M
(Dalton, M.); Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A
(Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F
(Dubois, F.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Egberts, K (Egberts, K.);
Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P
(Goret, P.); Hadjichristidis, C (Hadjichristidis, C.); Hauser, D (Hauser, D.); Hauser, M (Hauser,
M.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.); Hermann, G (Hermann, G.);
Hinton, JA (Hinton, J. A.); Hoffmann, A (Hoffmann, A.); Hofmann, W (Hofmann, W.);
(Katarzynski, K.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.);
Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D (Keogh, D.); Komin, N
(Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.);
Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Martin, JM (Martin, J. M.); Martineau-Huynh,
O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Masterson, C (Masterson, C.);
Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.); Moderski, R (Moderski, R.);
M.); Nedbal, D (Nedbal, D.); Nekrassov, D (Nekrassov, D.); Nolan, SJ (Nolan, S. J.); Ohm, S
(Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, ED (Wilhelmi, E. De Ona); Orford, KJ (Orford,
K. J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.);
Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P. -O.); Pita, S
(Pita, S.); Puehlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A (Quirrenbach,
A.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM (Rayner, S.
M.); Renaud, M (Renaud, M.); Rieger, F (Rieger, F.); Ripken, J (Ripken, J.); Rob, L (Rob, L.);
Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Rudak, B (Rudak, B.); Ruppel, J
A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.);
Steenkamp, R (Steenkamp, R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam,
PH (Tam, P. H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik,
C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P
(Vincent, P.); Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ
(Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA (Zdziarski, A. A.); Zech, A (Zech, A.)
Title: HESS OBSERVATIONS OF THE PROMPT AND AFTERGLOW PHASES OF GRB
060602B
Source: ASTROPHYSICAL JOURNAL, 690 (2): 1068-1073 JAN 10 2009
Abstract: We report on the first completely simultaneous observation of a gamma-ray burst
(GRB) using an array of Imaging Atmospheric Cherenkov Telescopes, which is sensitive to
photons in the very high energy (VHE) gamma-ray range (greater than or similar to 100 GeV).
On 2006 June 2, the Swift Burst Alert Telescope (BAT) registered an unusually soft gamma-ray
burst (GRB 060602B). The burst position was under observation using the High Energy
Stereoscopic System (HESS) at the time the burst occurred. Data were taken before, during, and
after the burst. A total of 5 hr of observations were obtained during the night of 2006 June 2-3,
and five additional hours were obtained over the next three nights. No VHE gamma-ray signal
was found during the period covered by the HESS observations. The 99% confidence level flux
upper limit (> 1 TeV) for the prompt phase (9 s) of GRB 060602B is 2.9 x 10(-9) erg cm(-2) s(1). Due to the very soft BAT spectrum of the burst compared with other Swift GRBs and its
proximity to the Galactic center, the burst is likely associated with a Galactic X-ray burster,
although the possibility of it being a cosmological GRB cannot be ruled out. We discuss the
implications of our flux limits in the context of these two bursting scenarios.
ISSN: 0004-637X
DOI: 10.1088/0004-637X/690/2/1068
Record 53 of 499
Antoranz, P (Antoranz, P.); Backes, M (Backes, M.); Baixeras, C (Baixeras, C.); Barrio, JA
(Barrio, J. A.); Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Becker, JK (Becker, J. K.);
Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bernardini, E (Bernardini, E.); Biland, A
(Biland, A.); Bock, RK (Bock, R. K.); Bonnoli, G (Bonnoli, G.); Bordas, P (Bordas, P.); Tridon,
DB (Tridon, D. Borla); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I
(Britvitch, I.); Camara, M (Camara, M.); Carmona, E (Carmona, E.); Chilingarian, A
Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); del Pozo, ED (del Pozo, E. de Cea); de los
Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
Sabata, F (De Sabata, F.); Mendez, CD (Mendez, C. Delgado); Dominguez, A (Dominguez, A.);
Dorner, D (Dorner, D.); Doro, M (Doro, M.); Elsaesser, D (Elsaesser, D.); Errando, M (Errando,
M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R
RJG (Lopez, R. J. Garcia); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F
A.); Hoehne, D (Hoehne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S (Huber, S.);
Jogler, T (Jogler, T.); Kranich, D (Kranich, D.); La Barbera, A (La Barbera, A.); Laille, A
(Laille, A.); Leonardo, E (Leonardo, E.); Lindfors, E (Lindfors, E.); Lombardi, S (Lombardi, S.);
Longo, F (Longo, F.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar,
P.); Maneva, G (Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim,
K.); Maraschi, L (Maraschi, L.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin,
D (Mazin, D.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.);
Mirzoyan, R (Mirzoyan, R.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D
(Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.); Oya, I (Oya,
I.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen, M.); Pascoli, D
(Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-Torres, MA (Perez-Torres,
M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prada, F
(Prada, F.); Prandini, E (Prandini, E.); Puchadesa, N (Puchadesa, N.); Raymers, A (Raymers,
A.); Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert,
A (Robert, A.); Ruegamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.);
Salvati, M (Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.); Sartori, P (Sartori, P.);
Satalecka, K (Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.); Schweizer, T
(Schweizer, T.); Shayduk, M (Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S.
N.); Sidro, N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaeae, A
(Sillanpaeae, A.); Sitarek, J (Sitarek, J.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier,
F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Tavecchio, F
(Tavecchio, F.); Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima,
M.); Tluczykont, M (Tluczykont, M.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.);
Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V (Vitale, V.); Wagner, RM
(Wagner, R. M.); Wittek, W (Wittek, W.); Zabalza, V (Zabalza, V.); Zandanel, F (Zandanel, F.);
Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: Improving the performance of the single-dish Cherenkov telescope MAGIC through the
use of signal timing
Source: ASTROPARTICLE PHYSICS, 30 (6): 293-305 JAN 2009
Abstract: The Cherenkov light flashes produced by extensive air showers are very short in time.
A high bandwidth and fast digitizing readout, therefore, can minimize the influence of the
background from the light of the night sky, and improve the performance in Cherenkov
telescopes. The time structure of the Cherenkov image can further be used in single-dish
Cherenkov telescopes as an additional parameter to reduce the background from unwanted
hadronic showers. A description of an analysis method which makes use of the time information
and the subsequent improvement on the performance of the MAGIC telescope (especially after
the upgrade with an ultra fast 2 GSamples/s digitization system in February 2007) will be
presented. The use of timing information in the analysis of the new MAGIC data reduces the
background by a factor two, which in turn results in an enhancement of about a factor 1.4 of the
flux sensitivity to point-like sources, as tested on observations of the Crab Nebula. (C) 2008
ISSN: 0927-6505
DOI: 10.1016/j.astropartphys.2008.10.003
Record 54 of 499
Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); del Pozo, ED (De Cea del Pozo, E.);
Reyes, RDL (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
Sabata, F (De Sabata, F.); Mendez, CD (Delgado Mendez, C.); Dominguez, A (Dominguez, A.);
S (Mizobuchi, S.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.);
Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.); Oya, I (Oya, I.);
(Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); PerezTorres, MA (Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A
(Piccioli, A.); Prada, F (Prada, F.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.);
Saito, TY (Saito, T. Y.); Salvati, M (Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.);
Sartori, P (Sartori, P.); Satalecka, K (Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V
(Scapin, V.); Schweizer, T (Schweizer, T.); Shayduk, M (Shayduk, M.); Shinozaki, K
(Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N (Sidro, N.); Sierpowska-Bartosik, A
(Sierpowska-Bartosik, A.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.);
Spanier, F (Spanier, F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo,
L.); Tavecchio, F (Tavecchio, F.); Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.);
Teshima, M (Teshima, M.); Tluczykont, M (Tluczykont, M.); Torres, DF (Torres, D. F.); Turini,
N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V (Vitale, V.);
Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zabalza, V (Zabalza, V.); Zandanel, F
(Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: VERY HIGH ENERGY GAMMA-RAY OBSERVATIONS OF STRONG FLARING
ACTIVITY IN M87 IN 2008 FEBRUARY
Source: ASTROPHYSICAL JOURNAL LETTERS, 685 (1): L23-L26 SEP 20 2008
Abstract: M87 is the only known nonblazar radio galaxy to emit very high energy (VHE)
gamma rays. During a monitoring program of M87, a rapid flare in VHE gamma-rays was
detected by the MAGIC telescope in early 2008. The flux was found to be variable above 350
GeV on a timescale as short as 1 day at a significance level of 5.6 sigma. The highest measured
flux reached 15% of the Crab Nebula flux. We observed several substantial changes of the flux
level during the 13 day observing period. The flux at lower energies (150-350 GeV), instead, is
compatible with being constant. The energy spectrum can be described by a power law with a
photon index of 2.30 +/- 0.11(stat) +/- 0.20(syst). The observed day-scale flux variability at VHE
prefers the M87 core as source of the emission and implies that either the emission region is very
compact (just a few Schwarzschild radii) or the Doppler factor of the emitting blob is rather large
in the case of a nonexpanding emission region.
Record 55 of 499
Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bernardini, E (Bernardini, E.); Bigongiari,
C (Bigongiari, C.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.); Bonnoli, G (Bonnoli, G.);
Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I
Reyes, RD (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Moles, M
(Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.);
Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E (Ona-Wilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya,
(Prada, F.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.);
Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A
(Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.);
N.); Sidro, N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A
(Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A
Zapatero, J (Zapatero, J.)
Title: FIRST BOUNDS ON THE HIGH-ENERGY EMISSION FROM ISOLATED WOLFRAYET BINARY SYSTEMS
Source: ASTROPHYSICAL JOURNAL LETTERS, 685 (1): L71-L74 SEP 20 2008
Abstract: High-energy gamma-ray emission is theoretically expected to arise in tight binary star
systems (with high mass loss and high-velocity winds), although the evidence of this relationship
has proven to be elusive so far. Here we present the first bounds on this putative emission from
isolated Wolf-Rayet (WR) star binaries, WR 147 and WR 146, obtained from observations with
the MAGIC telescope.
Record 56 of 499
Author(s): Albert, J (Albert, J.); Aliu, E (Aliu, E.); Anderhub, H (Anderhub, H.); Antoranz, P
(Antoranz, P.); Baixeras, C (Baixeras, C.); Barrio, JA (Barrio, J. A.); Bartko, H (Bartko, H.);
Bastieri, D (Bastieri, D.); Becker, JK (Becker, J. K.); Bednarek, W (Bednarek, W.); Berdyugin,
A (Berdyugin, A.); Berger, K (Berger, K.); Bigongiari, C (Bigongiari, C.); Biland, A (Biland,
A.); Bock, RK (Bock, R. K.); Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.);
Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M (Camara, M.); Carmona, E (Carmona,
E.); Chilingarian, A (Chilingarian, A.); Commichau, S (Commichau, S.); Contreras, JL
(Contreras, J. L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.); Curtef, V (Curtef, V.);
Danielyan, V (Danielyan, V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C
(Delgado, C.); Reyes, RD (Reyes, R. de Los); De Lotto, B (De Lotto, B.); Dorner, D (Dorner,
D.); Doro, M (Doro, M.); Errando, M (Errando, M.); Fagiolini, M (Fagiolini, M.); Ferenc, D
(Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.);
Font, L (Font, L.); Fuchs, M (Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (GarciaLopez, R. J.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F (Goebel, F.);
Hakobyan, D (Hakobyan, D.); Hayashida, M (Hayashida, M.); Hengstebeck, T (Hengstebeck,
T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.);
Huber, S (Huber, S.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.);
Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E (Lindfors,
(Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.); Mannheim, K (Mannheim,
K.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C
(Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.);
Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.); Moralejo, A (Moralejo, A.); Nieto,
D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E (OnaWilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Panniello, M (Panniello, M.); Paoletti, R
(Paoletti, R.); Pasanen, M (Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R
(Pegna, R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prandini,
E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rico, J (Rico, J.);
Rhode, W (Rhode, W.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.);
Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.); Sanchez, A
(Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.);
Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer, T.); Shayduk, M (Shayduk, M.); Shinozaki,
K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaa, A.);
Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A (Stamerra, A.); Stark, LS
(Stark, L. S.); Takalo, L (Takalo, L.); Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.);
Teshima, M (Teshima, M.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H
(Vankov, H.); Venturini, A (Venturini, A.); Vitale, V (Vitale, V.); Wagner, RM (Wagner, R.
M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin,
R.); Zapatero, J (Zapatero, J.)
Title: MAGIC observations of PG 1553+113 during a multiwavelength campaign in July 2006
Source: ASTRONOMY & ASTROPHYSICS, 493 (2): 467-469 JAN 2009
Abstract: The active galactic nucleus PG1553+113 was observed by the MAGIC telescope in
July 2006 during a multiwavelength campaign, in which telescopes in the optical, X-ray, and
very high energies participated. Although the MAGIC data were affected by strong atmospheric
absorption (calima), they were analyzed after applying a correction. In 8.5 h, a signal was
detected with a significance of 5.0 sigma. The integral flux above 150 GeV was (2.6 +/- 0.9) x
10(-7) ph s(-1) m(-2). By fitting the differential energy spectrum with a power law, a spectral
index of -4.1 +/- 0.3 was obtained.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20079048
Record 57 of 499
Author(s): Asatrian, HM (Asatrian, H. M.); Greub, C (Greub, C.); Pecjak, BD (Pecjak, B. D.)
Title: Next-to-next-to-leading order corrections to (B)over-bar -> X(u)l(v)over-bar in the shapefunction region
Source: PHYSICAL REVIEW D, 78 (11): Art. No. 114028 DEC 2008
Abstract: The inclusive decay (B) over bar -> X(u)l (v) over bar is of much interest because of
its potential to constrain the CKM element vertical bar V-ub vertical bar. Experimental cuts
required to suppress charm background restrict measurements of this decay to the shape-function
region, where the hadronic final state carries a large energy but only a moderate invariant mass.
In this kinematic region, the differential decay distributions satisfy a factorization formula of the
form H center dot J circle times S, where S is the nonperturbative shape function, and the object
H center dot J is a perturbatively calculable hard-scattering kernel. In this paper, we present the
calculation of the hard function H at next-to-next-to-leading order (NNLO) in perturbation
theory. Combined with the known NNLO result for the jet function J, this completes the
perturbative part of the NNLO calculation for this process.
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.78.114028
Record 58 of 499
Author(s): Karakhanyan, D (Karakhanyan, D.); Khachatryan, S (Khachatryan, Sh.)
Title: Solutions to the Yang-Baxter equations with osp(q) (1 vertical bar 2) symmetry: Lax
operators
Source: NUCLEAR PHYSICS B, 808 (3): 525-545 FEB 21 2009
Abstract: We find a new 4 x 4 solution to the osp(q) (1 vertical bar 2)-invariant Yang-Baxter
equation with simple dependence on the spectral parameter and propose 2 x 2 matrix expressions
for the corresponding Lax operator. The general inhomogeneous universal spectral-parameter
dependent R-matrix is derived. It is proven, that there are two independent solutions to the
homogeneous osp(q) (1 vertical bar 2)-invariant YBE, defined on the fundamental threedimensional representations. One of them is the particular case of the universal matrix, while the
second one does not admit generalization to the higher-dimensional cases. Also the 3 x 3 matrix
expression of the Lax operator is found, which have a well-defined limit at q --> 1. (C) 2008
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2008.09.001
Record 59 of 499
Author(s): Izmailian, NS (Izmailian, N. Sh.); Hu, CK (Hu, Chin-Kum)
Title: Boundary conditions and amplitude ratios for finite-size corrections of a one-dimensional
quantum spin model
Source: NUCLEAR PHYSICS B, 808 (3): 613-624 FEB 21 2009
Abstract: We study the influence of boundary conditions on the finite-size corrections of a onedimensional (I D) quantum spin model by exact and perturbative theoretic calculations. We
obtain two new infinite sets of universal amplitude ratios for the finite-size correction terms of
the I D quantum spin model of N sites with free and antiperiodic boundary conditions. The
results for the lowest two orders are in perfect agreement with a perturbative conformal field
theory scenario proposed by Cardy [J. Cardy, Nucl. Phys. B 270 (1986) 186]. (C) 2008 Elsevier
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2008.09.009
Record 60 of 499
Adam, N (Adam, N.); Adams, M (Adams, M.); Akchurin, N (Akchurin, N.); Akgun, U (Akgun,
U.); Albayrak, E (Albayrak, E.); Anderson, E (Anderson, E. W.); Antchev, G (Antchev, G.);
Arcidy, M (Arcidy, M.); Ayan, S (Ayan, S.); Aydin, S (Aydin, S.); Aziz, T (Aziz, T.);
Baarmand, M (Baarmand, M.); Babich, K (Babich, K.); Baden, D (Baden, D.); Bakirci, M
(Bakirci, M. N.); Banerjee, S (Banerjee, Sudeshna); Banerjee, S (Banerjee, Sunanda); Bard, R
(Bard, R.); Barnes, V (Barnes, V.); Bawa, H (Bawa, H.); Baiatian, G (Baiatian, G.); Bencze, G
(Bencze, G.); Beri, S (Beri, S.); Berntzon, L (Berntzon, L.); Bhandari, V (Bhandari, V.);
Bhatnagar, V (Bhatnagar, V.); Bhatti, A (Bhatti, A.); Bodek, A (Bodek, A.); Bose, S (Bose, S.);
Bose, T (Bose, T.); Budd, H (Budd, H.); Burchesky, K (Burchesky, K.); Camporesi, T
(Camporesi, T.); Cankocak, K (Cankocak, K.); Carrell, K (Carrell, K.); Cerci, S (Cerci, S.);
Chendvankar, S (Chendvankar, S.); Chung, Y (Chung, Y.); Clarida, W (Clarida, W.); Cremaldi,
L (Cremaldi, L.); Cushman, P (Cushman, P.); Damgov, J (Damgov, J.); de Barbaro, P (de
Barbaro, P.); Debbins, P (Debbins, P.); Deliomeroglu, M (Deliomeroglu, M.); Demianov, A
(Demianov, A.); de Visser, T (de Visser, T.); Deshpande, P (Deshpande, P. V.); Diaz, J (Diaz,
J.); Dimitrov, L (Dimitrov, L.); Dugad, S (Dugad, S.); Dumanoglu, I (Dumanoglu, I.); Duru, F
(Duru, F.); Efthymiopoulos, I (Efthymiopoulos, I.); Elias, J (Elias, J.); Elvira, D (Elvira, D.);
Emeliantchik, I (Emeliantchik, I.); Eno, S (Eno, S.); Ershov, A (Ershov, A.); Erturk, S (Erturk,
S.); Esen, S (Esen, S.); Eskut, E (Eskut, E.); Fenyvesi, A (Fenyvesi, A.); Fisher, W (Fisher, W.);
Freeman, J (Freeman, J.); Ganguli, S (Ganguli, S. N.); Gaultney, V (Gaultney, V.); Gamsizkan,
H (Gamsizkan, H.); Gavrilov, V (Gavrilov, V.); Genchev, V (Genchev, V.); Gleyzer, S (Gleyzer,
S.); Golutvin, I (Golutvin, I.); Goncharov, P (Goncharov, P.); Grassi, T (Grassi, T.); Green, D
(Green, D.); Gribushin, A (Gribushin, A.); Grinev, B (Grinev, B.); Guchait, M (Guchait, M.);
Gurtu, A (Gurtu, A.); Guler, AM (Gueler, A. Murat); Gulmez, E (Guelmez, E.); Gumus, K
(Guemues, K.); Haelen, T (Haelen, T.); Hagopian, S (Hagopian, S.); Hagopian, V (Hagopian,
V.); Halyo, V (Halyo, V.); Hashemi, M (Hashemi, M.); Hauptman, J (Hauptman, J.); Hazen, E
(Hazen, E.); Heering, A (Heering, A.); Heister, A (Heister, A.); Hunt, A (Hunt, A.); Ilyina, N
(Ilyina, N.); Ingram, D (Ingram, D.); Isiksal, E (Isiksal, E.); Jarvis, C (Jarvis, C.); Jeong, C
(Jeong, C.); Johnson, K (Johnson, K.); Jones, J (Jones, J.); Kaftanov, V (Kaftanov, V.); Kalagin,
V (Kalagin, V.); Kalinin, A (Kalinin, A.); Kalmani, S (Kalmani, S.); Karmgard, D (Karmgard,
D.); Kaur, M (Kaur, M.); Kaya, M (Kaya, M.); Kaya, O (Kaya, O.); Kayis-Topaksu, A (KayisTopaksu, A.); Kellogg, R (Kellogg, R.); Khmelnikov, A (Khmelnikov, A.); Kim, H (Kim, H.);
Kisselevich, I (Kisselevich, I.); Kodolova, O (Kodolova, O.); Kohli, J (Kohli, J.); Kolossov, V
(Kolossov, V.); Korablev, A (Korablev, A.); Korneev, Y (Korneev, Y.); Kosarev, I (Kosarev, I.);
Kramer, L (Kramer, L.); Krinitsyn, A (Krinitsyn, A.); Krishnaswamy, M (Krishnaswamy, M.
R.); Krokhotin, A (Krokhotin, A.); Kryshkin, V (Kryshkin, V.); Kuleshov, S (Kuleshov, S.);
Kumar, A (Kumar, A.); Kunori, S (Kunori, S.); Laasanen, A (Laasanen, A.); Ladygin, V
(Ladygin, V.); Laird, E (Laird, E.); Landsberg, G (Landsberg, G.); Laszlo, A (Laszlo, A.);
Lawlor, C (Lawlor, C.); Lazic, D (Lazic, D.); Lee, S (Lee, S. W.); Levchuk, L (Levchuk, L.);
Linn, S (Linn, S.); Litvintsev, D (Litvintsev, D.); Lobolo, L (Lobolo, L.); Los, S (Los, S.);
Lubinsky, V (Lubinsky, V.); Lukanin, V (Lukanin, V.); Ma, Y (Ma, Y.); Machado, E (Machado,
E.); Maity, M (Maity, M.); Majumder, G (Majumder, G.); Mans, J (Mans, J.); Marlow, D
(Marlow, D.); Markowitz, P (Markowitz, P.); Martinez, G (Martinez, G.); Mazumdar, K
(Mazumdar, K.); Merlo, J (Merlo, J. P.); Mermerkaya, H (Mermerkaya, H.); Mescheryakov, G
(Mescheryakov, G.); Mestvirishvili, A (Mestvirishvili, A.); Miller, M (Miller, M.); Moeller, A
(Moeller, A.); Mohammadi-Najafabadi, M (Mohammadi-Najafabadi, M.); Moissenz, P
(Moissenz, P.); Mondal, N (Mondal, N.); Mossolov, V (Mossolov, V.); Nagaraj, P (Nagaraj, P.);
Narasimham, V (Narasimham, V. S.); Norbeck, E (Norbeck, E.); Olson, J (Olson, J.); Onel, Y
(Onel, Y.); Onengut, G (Onengut, G.); Ozkan, C (Ozkan, C.); Ozkurt, H (Ozkurt, H.);
Ozkorucuklu, S (Ozkorucuklu, S.); Ozok, F (Ozok, F.); Paktinat, S (Paktinat, S.); Pal, A (Pal,
A.); Patil, M (Patil, M.); Penzo, A (Penzo, A.); Petrushanko, S (Petrushanko, S.); Petrosyan, A
(Petrosyan, A.); Pikalov, V (Pikalov, V.); Piperov, S (Piperov, S.); Podrasky, V (Podrasky, V.);
Polatoz, A (Polatoz, A.); Pompos, A (Pompos, A.); Popescu, S (Popescu, S.); Posch, C (Posch,
C.); Pozdnyakov, A (Pozdnyakov, A.); Qian, W (Qian, W.); Ralich, R (Ralich, R. M.); Reddy, L
(Reddy, L.); Reidy, J (Reidy, J.); Rogalev, E (Rogalev, E.); Roh, Y (Roh, Y.); Rohlf, J (Rohlf,
J.); Ronzhin, A (Ronzhin, A.); Ruchti, R (Ruchti, R.); Ryazanov, A (Ryazanov, A.); Safronov, G
(Safronov, G.); Sanders, D (Sanders, D. A.); Sanzeni, C (Sanzeni, C.); Sarycheva, L (Sarycheva,
L.); Satyanarayana, B (Satyanarayana, B.); Schmidt, I (Schmidt, I.); Sekmen, S (Sekmen, S.);
Semenov, S (Semenov, S.); Senchishin, V (Senchishin, V.); Sergeyev, S (Sergeyev, S.); Serin, M
(Serin, M.); Sever, R (Sever, R.); Singh, B (Singh, B.); Singh, J (Singh, J. B.); Sirunyan, A
(Sirunyan, A.); Skuja, A (Skuja, A.); Sharma, S (Sharma, S.); Sherwood, B (Sherwood, B.);
Shumeiko, N (Shumeiko, N.); Smirnov, V (Smirnov, V.); Sogut, K (Sogut, K.); Sonmez, N
(Sonmez, N.); Sorokin, P (Sorokin, P.); Spezziga, M (Spezziga, M.); Stefanovich, R
(Stefanovich, R.); Stolin, V (Stolin, V.); Sudhakar, K (Sudhakar, K.); Sulak, L (Sulak, L.);
Suzuki, I (Suzuki, I.); Talov, V (Talov, V.); Teplov, K (Teplov, K.); Thomas, R (Thomas, R.);
Tonwar, S (Tonwar, S.); Topakli, H (Topakli, H.); Tully, C (Tully, C.); Turchanovich, L
(Turchanovich, L.); Ulyanov, A (Ulyanov, A.); Vanini, A (Vanini, A.); Vankov, I (Vankov, I.);
Vardanyan, I (Vardanyan, I.); Varela, F (Varela, F.); Vergili, M (Vergili, M.); Verma, P (Verma,
P.); Vesztergombi, G (Vesztergombi, G.); Vidal, R (Vidal, R.); Vishnevskiy, A (Vishnevskiy,
A.); Vlassov, E (Vlassov, E.); Vodopiyanov, I (Vodopiyanov, I.); Volobouev, I (Volobouev, I.);
Volkov, A (Volkov, A.); Volodko, A (Volodko, A.); Wang, L (Wang, L.); Werner, J (Werner,
J.); Wetstein, M (Wetstein, M.); Winn, D (Winn, D.); Wigmans, R (Wigmans, R.); Whitmore, J
(Whitmore, J.); Wu, S (Wu, S. X.); Yazgan, E (Yazgan, E.); Yetkin, T (Yetkin, T.); Zalan, P
(Zalan, P.); Zarubin, A (Zarubin, A.); Zeyrek, M (Zeyrek, M.)
Group Author(s): CMS HCAL Collaborations
Title: Design, performance, and calibration of the CMS hadron-outer calorimeter
Source: EUROPEAN PHYSICAL JOURNAL C, 57 (3): 653-663 OCT 2008
Abstract: The Outer Hadron Calorimeter (HCAL HO) of the CMS detector is designed to
measure the energy that is not contained by the barrel (HCAL HB) and electromagnetic (ECAL
EB) calorimeters. Due to space limitation the barrel calorimeters do not contain completely the
hadronic shower and an outer calorimeter (HO) was designed, constructed and inserted in the
muon system of CMS to measure the energy leakage. Testing and calibration of the HO was
carried out in a 300 GeV/c test beam that improved the linearity and resolution. HO will provide
a net improvement in missing E (T) measurements at LHC energies. Information from HO will
also be used for the muon trigger in CMS.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0756-6
Record 61 of 499
Author(s): de Wit, TD (de Wit, Thierry Dudok); Chilingarian, AA (Chilingarian, Ashot A.);
Karapetyan, GG (Karapetyan, Grigori G.)
Title: Techniques for characterizing weak transients in cosmic ray records, as measured by
neutron monitor networks
Source: ACTA GEOPHYSICA, 57 (1): 102-115 MAR 2009
Abstract: The analysis of weak variations in the energetic particle flux, as detected by neutron
or muon monitors, can often be considerably improved by analysing data from monitor networks
and thereby exploiting the spatial coherence of the flux. We present a statistical framework for
carrying out such an analysis and discuss its physical interpretation. Two other applications are
also presented: filling data gaps and removing trends. This study focuses on the method and its
various uses.
ISSN: 1895-6572
DOI: 10.2478/s11600-008-0038-6
Record 62 of 499
Author(s): Jung, E (Jung, Eylee); Hwang, MR (Hwang, Mi-Ra); Park, D (Park, Daekil);
Tamaryan, L (Tamaryan, Levon); Tamaryan, S (Tamaryan, Sayatnova)
Title: THREE-QUBIT GROVERIAN MEASURE
Source: QUANTUM INFORMATION & COMPUTATION, 8 (10): 925-942 NOV 2008
Abstract: The Groverian measures are analytically computed in various types of three-qubit
states. The final results are also expressed in terms of local-unitary invariant quantities in each
type. This fact reflects the manifest local-unitary invariance of the Groverian measure. It is also
shown that the analytical expressions for various types have correct limits to other types. For
some types (type 4 and type 5) we failed to compute the analytical expression of the Groverian
measure in this paper. However, from the consideration of local-unitary invariants we have
shown that the Groverian measure in type 4 should be independent of the phase factor phi, which
appear in the three-qubit state \psi >. This fact with geometric interpretation on the Groverian
measure may enable us to derive the analytical expressions for general arbitrary three-qubit
states in near future.
ISSN: 1533-7146
Record 63 of 499
Author(s): Danagulyan, AS (Danagulyan, A. S.); Balabekyan, AR (Balabekyan, A. R.);
Hovhannisyan, GH (Hovhannisyan, G. H.); Demekhina, NA (Demekhina, N. A.); Adam, J
(Adam, J.); Kalinnikov, V (Kalinnikov, Vg.); Krivopustov, MI (Krivopustov, M. I.); TsoupkoSitmkov, VM (Tsoupko-Sitmkov, V. M.)
Title: Isoeffect in reactions on enriched tin isotopes with C-12 ions at 2.2A GeV energy
Source: NUCLEAR PHYSICS A, 814: 109-117 DEC 15 2008
Abstract: The analysis of isotope effect in experimental data from reactions on enriched tin
isotopes with C-12-ions at energy 26.4 GeV is presented and compared with previous data
obtained in protons, deuterons induced reactions on the same targets.
Dependence of the target isospin is observed for different mass reaction products. The
parameterization of cross-section ratios in frames of known empiric relations is made. The
obtained parameter B behavior is discussed in the range of light and heavy products and for
targets with different isotope composition. (C) 2008 Published by Elsevier B.V.
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2008.10.007
Record 64 of 499
Author(s): Aamodt, K (Aamodt, K.); Quintana, AA (Quintana, A. Abrahantes); Achenbach, R
(Achenbach, R.); Acounis, S (Acounis, S.); Adamova, D (Adamova, D.); Adler, C (Adler, C.);
Aggarwal, M (Aggarwal, M.); Agnese, F (Agnese, F.); Rinella, GA (Rinella, G. Aglieri);
Ahammed, Z (Ahammed, Z.); Ahmad, A (Ahmad, A.); Ahmad, N (Ahmad, N.); Ahmad, S
(Ahmad, S.); Akindinov, A (Akindinov, A.); Akishin, P (Akishin, P.); Aleksandrov, D
(Aleksandrov, D.); Alessandro, B (Alessandro, B.); Alfaro, R (Alfaro, R.); Alfarone, G
(Alfarone, G.); Alici, A (Alici, A.); Alme, J (Alme, J.); Alt, T (Alt, T.); Altinpinar, S (Altinpinar,
S.); Amend, W (Amend, W.); Andrei, C (Andrei, C.); Andres, Y (Andres, Y.); Andronic, A
(Andronic, A.); Anelli, G (Anelli, G.); Anfreville, M (Anfreville, M.); Angelov, V (Angelov,
V.); Anzo, A (Anzo, A.); Anson, C (Anson, C.); Anticic, T (Anticic, T.); Antonenko, V
(Antonenko, V.); Antonczyk, D (Antonczyk, D.); Antinori, F (Antinori, F.); Antinori, S
(Antinori, S.); Antonioli, P (Antonioli, P.); Aphecetche, L (Aphecetche, L.); Appelshauser, H
(Appelshaeuser, H.); Aprodu, V (Aprodu, V.); Arba, M (Arba, M.); Arcelli, S (Arcelli, S.);
Argentieri, A (Argentieri, A.); Armesto, N (Armesto, N.); Arnaldi, R (Arnaldi, R.); Arefiev, A
(Arefiev, A.); Arsene, I (Arsene, I.); Asryan, A (Asryan, A.); Augustinus, A (Augustinus, A.);
Awes, TC (Awes, T. C.); Aysto, J (Aeysto, J.); Azmi, MD (Azmi, M. Danish); Bablock, S
(Bablock, S.); Badala, A (Badala, A.); Badyal, SK (Badyal, S. K.); Baechler, J (Baechler, J.);
Bagnasco, S (Bagnasco, S.); Bailhache, R (Bailhache, R.); Bala, R (Bala, R.); Baldisseri, A
(Baldisseri, A.); Baldit, A (Baldit, A.); Ban, J (Ban, J.); Barbera, R (Barbera, R.); Barberis, PL
(Barberis, P. -L.); Barbet, JM (Barbet, J. M.); Barnafoldi, G (Barnaefoldi, G.); Barret, V (Barret,
V.); Bartke, J (Bartke, J.); Bartos, D (Bartos, D.); Basile, M (Basile, M.); Basmanov, V
(Basmanov, V.); Bastid, N (Bastid, N.); Batigne, G (Batigne, G.); Batyunya, B (Batyunya, B.);
Baudot, J (Baudot, J.); Baumann, C (Baumann, C.); Bearden, I (Bearden, I.); Becker, B (Becker,
B.); Belikov, J (Belikov, J.); Bellwied, R (Bellwied, R.); Belmont-Moreno, E (Belmont-Moreno,
E.); Belogianni, A (Belogianni, A.); Belyaev, S (Belyaev, S.); Benato, A (Benato, A.); Beney, JL
(Beney, J. L.); Benhabib, L (Benhabib, L.); Benotto, F (Benotto, F.); Beoe, S (Beoe, S.);
Berceanu, I (Berceanu, I.); Bercuci, A (Bercuci, A.); Berdermann, E (Berdermann, E.);
Berdnikov, Y (Berdnikov, Y.); Bernard, C (Bernard, C.); Berny, R (Berny, R.); Berst, JD (Berst,
J. D.); Bertelsen, H (Bertelsen, H.); Betev, L (Betev, L.); Bhasin, A (Bhasin, A.); Baskar, P
(Baskar, P.); Bhati, A (Bhati, A.); Bianchi, N (Bianchi, N.); Bielcik, J (Bielcik, J.); Bielcikova, J
(Bielcikova, J.); Bimbot, L (Bimbot, L.); Blanchard, G (Blanchard, G.); Blanco, F (Blanco, F.);
Blanco, F (Blanco, F.); Blau, D (Blau, D.); Blume, C (Blume, C.); Blyth, S (Blyth, S.); Boccioli,
M (Boccioli, M.); Bogdanov, A (Bogdanov, A.); Boggild, H (Boggild, H.); Bogolyubsky, M
(Bogolyubsky, M.); Boldizsar, L (Boldizsar, L.); Bombara, M (Bombara, M.); Bombonati, C
(Bombonati, C.); Bondila, M (Bondila, M.); Bonnet, D (Bonnet, D.); Bonvicini, V (Bonvicini,
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(Bortoli, Y.); Borysov, O (Borysov, O.); Bose, S (Bose, S.); Bosisio, L (Bosisio, L.); Botje, M
(Botje, M.); Bottger, S (Boettger, S.); Bourdaud, G (Bourdaud, G.); Bourrion, O (Bourrion, O.);
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J (Castor, J.); Catanescu, V (Catanescu, V.); Cattaruzza, E (Cattaruzza, E.); Cavazza, D
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VC (Barroso, V. Chibante); Choi, J (Choi, J.); Christakoglou, P (Christakoglou, P.);
Christiansen, P (Christiansen, P.); Christensen, C (Christensen, C.); Chykalov, OA (Chykalov,
O. A.); Cicalo, C (Cicalo, C.); Cifarelli-Strolin, L (Cifarelli-Strolin, L.); Ciobanu, M (Ciobanu,
M.); Cindolo, F (Cindolo, F.); Cirstoiu, C (Cirstoiu, C.); Clausse, O (Clausse, O.); Cleymans, J
(Cleymans, J.); Cobanoglu, O (Cobanoglu, O.); Coffin, JP (Coffin, J. -P.); Coli, S (Coli, S.);
Colla, A (Colla, A.); Colledani, C (Colledani, C.); Combaret, C (Combaret, C.); Combet, M
(Combet, M.); Comets, M (Comets, M.); Balbastre, GC (Balbastre, G. Conesa); del Valle, ZC
(del Valle, Z. Conesa); Contin, G (Contin, G.); Contreras, J (Contreras, J.); Cormier, T (Cormier,
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Crochet, P (Crochet, P.); Cuautle, E (Cuautle, E.); Cussonneau, J (Cussonneau, J.); Dahlinger, M
(Dahlinger, M.); Dainese, A (Dainese, A.); Dalsgaard, HH (Dalsgaard, H. H.); Daniel, L (Daniel,
L.); Das, I (Das, I.); Das, T (Das, T.); Dash, A (Dash, A.); Da Silva, R (Da Silva, R.); Davenport,
M (Davenport, M.); Daues, H (Daues, H.); De Caro, A (De Caro, A.); de Cataldo, G (de Cataldo,
G.); De Cuveland, J (De Cuveland, J.); De Falco, A (De Falco, A.); de Gaspari, M (de Gaspari,
M.); de Girolamo, P (de Girolamo, P.); de Groot, J (de Groot, J.); De Gruttola, D (De Gruttola,
D.); De Haas, A (De Haas, A.); De Marco, N (De Marco, N.); De Pasquale, S (De Pasquale, S.);
De Remigis, P (De Remigis, P.); de Vaux, D (de Vaux, D.); Decock, G (Decock, G.);
Delagrange, H (Delagrange, H.); Del Franco, M (Del Franco, M.); Dellacasa, G (Dellacasa, G.);
Dell'Olio, C (Dell'Olio, C.); Dell'Olio, D (Dell'Olio, D.); Deloff, A (Deloff, A.); Demanov, V
(Demanov, V.); Denes, E (Denes, E.); D'Erasmo, G (D'Erasmo, G.); Derkach, D (Derkach, D.);
Devaux, A (Devaux, A.); Di Bari, D (Di Bari, D.); Di Bartelomen, A (Di Bartelomen, A.); Di
Giglio, C (Di Giglio, C.); Di Liberto, S (Di Liberto, S.); Di Mauro, A (Di Mauro, A.); Di Nezza,
P (Di Nezza, P.); Dialinas, M (Dialinas, M.); Diaz, L (Diaz, L.); Valdes, RD (Valdes, R. Diaz);
Dietel, T (Dietel, T.); Dima, R (Dima, R.); Ding, H (Ding, H.); Dinca, C (Dinca, C.); Divia, R
(Divia, R.); Dobretsov, V (Dobretsov, V.); Dobrin, A (Dobrin, A.); Doenigus, B (Doenigus, B.);
Dobrowolski, T (Dobrowolski, T.); Dominguez, I (Dominguez, I.); Dorn, A (Dorn, A.); Drouet,
S (Drouet, S.); Dubey, AE (Dubey, A. E.); Ducroux, L (Ducroux, L.); Dumitrache, F
(Dumitrache, F.); Dumonteil, E (Dumonteil, E.); Dupieux, P (Dupieux, P.); Duta, V (Duta, V.);
Majumdar, AD (Majumdar, A. Dutta); Majumdar, MD (Majumdar, M. Dutta); Dyhre, T (Dyhre,
Th.); Efimov, L (Efimov, L.); Efremov, A (Efremov, A.); Elia, D (Elia, D.); Emschermann, D
(Emschermann, D.); Engster, C (Engster, C.); Enokizono, A (Enokizono, A.); Espagnon, B
(Espagnon, B.); Estienne, M (Estienne, M.); Evangelista, A (Evangelista, A.); Evans, D (Evans,
D.); Evrard, S (Evrard, S.); Fabjan, CW (Fabjan, C. W.); Fabrid, D (Fabrid, D.); Faivre, J
(Faivre, J.); Falchieri, D (Falchieri, D.); Fantoni, A (Fantoni, A.); Farano, R (Farano, R.);
Fearick, R (Fearick, R.); Fedorov, O (Fedorov, O.); Fekete, V (Fekete, V.); Felea, D (Felea, D.);
Feofilov, G (Feofilov, G.); Tellez, AF (Tellez, A. Fernandez); Ferretti, A (Ferretti, A.); Fichera,
F (Fichera, F.); Filchagin, S (Filchagin, S.); Filoni, E (Filoni, E.); Finck, C (Finck, C.); Fini, R
(Fini, R.); Fiore, EM (Fiore, E. M.); Flierl, D (Flierl, D.); Floris, M (Floris, M.); Fodor, Z (Fodor,
Z.); Foka, Y (Foka, Y.); Fokin, S (Fokin, S.); Force, P (Force, P.); Formenti, F (Formenti, F.);
Fragiacomo, E (Fragiacomo, E.); Fragkiadakis, M (Fragkiadakis, M.); Fraissard, D (Fraissard,
D.); Franco, A (Franco, A.); Franco, M (Franco, M.); Frankenfeld, U (Frankenfeld, U.); Fratino,
U (Fratino, U.); Fresneau, S (Fresneau, S.); Frolov, A (Frolov, A.); Fuchs, U (Fuchs, U.); Fujita,
J (Fujita, J.); Furget, C (Furget, C.); Furini, M (Furini, M.); Girard, MF (Girard, M. Fusco);
Gaardhoje, JJ (Gaardhoje, J. -J.); Gabrielli, A (Gabrielli, A.); Gaido, L (Gaido, L.); Torreira, AG
(Torreira, A. Gallas); Gallio, M (Gallio, M.); Gadrat, S (Gadrat, S.); Gagliard, M (Gagliard, M.);
Gag, A (Gag, A.); Gandolfi, E (Gandolfi, E.); Ganoti, P (Ganoti, P.); Ganti, M (Ganti, M.);
Garabatos, J (Garabatos, J.); Lopez, AG (Lopez, A. Garcia); Garizzo, L (Garizzo, L.); Gaudichet,
L (Gaudichet, L.); Gemme, R (Gemme, R.); Germain, M (Germain, M.); Gheata, A (Gheata, A.);
Gheata, M (Gheata, M.); Ghidini, B (Ghidini, B.); Ghosh, P (Ghosh, P.); Giolu, G (Giolu, G.);
Giraudo, G (Giraudo, G.); Giubellino, P (Giubellino, P.); Glasow, R (Glasow, R.); Glassel, P
(Glaessel, P.); Ferreiro, EG (Ferreiro, E. G.); Gutierrez, CG (Gutierrez, C. Gonzalez); GonzalesTrueba, LH (Gonzales-Trueba, L. H.); Gorbunov, S (Gorbunov, S.); Gorbunov, Y (Gorbunov,
Y.); Gos, H (Gos, H.); Gosset, J (Gosset, J.); Gotovac, S (Gotovac, S.); Gottschlag, H
(Gottschlag, H.); Gottschalk, D (Gottschalk, D.); Grabski, V (Grabski, V.); Grassi, T (Grassi,
T.); Gray, H (Gray, H.); Grebenyuk, O (Grebenyuk, O.); Grebieszkow, K (Grebieszkow, K.);
Gregory, C (Gregory, C.); Grigoras, C (Grigoras, C.); Grion, N (Grion, N.); Grigoriev, V
(Grigoriev, V.); Grigoryan, A (Grigoryan, A.); Grigoryan, C (Grigoryan, C.); Grigoryan, S
(Grigoryan, S.); Grishuk, Y (Grishuk, Y.); Gros, P (Gros, P.); Grosse-Oetringhaus, J (GrosseOetringhaus, J.); Grossiord, JY (Grossiord, J. -Y.); Grosso, R (Grosso, R.); Grynyov, B
(Grynyov, B.); Guarnaccia, C (Guarnaccia, C.); Guber, F (Guber, F.); Guerin, F (Guerin, F.);
Guernane, R (Guernane, R.); Guerzoni, M (Guerzoni, M.); Guichard, A (Guichard, A.); Guida, A
(Guida, A.); Guilloux, G (Guilloux, G.); Gulkanyan, H (Gulkanyan, H.); Gulbrandsen, K
(Gulbrandsen, K.); Gunji, T (Gunji, T.); Gupta, A (Gupta, A.); Gupta, V (Gupta, V.);
Gustafsson, HA (Gustafsson, H. -A.); Gutbrod, H (Gutbrod, H.); Hadjidakis, C (Hadjidakis, C.);
Haiduc, M (Haiduc, M.); Hamar, G (Hamar, G.); Hamagaki, H (Hamagaki, H.); Hamblen, J
(Hamblen, J.); Hansen, JC (Hansen, J. C.); Hardy, P (Hardy, P.); Hatzifotiadou, D
(Hatzifotiadou, D.); Harris, JW (Harris, J. W.); Hartig, M (Hartig, M.); Harutyunyan, A
(Harutyunyan, A.); Hayrapetyan, A (Hayrapetyan, A.); Hasch, D (Hasch, D.); Hasegan, D
(Hasegan, D.); Hehner, J (Hehner, J.); Heine, N (Heine, N.); Heinz, M (Heinz, M.); Helstrup, H
(Helstrup, H.); Herghelegiu, A (Herghelegiu, A.); Herlant, S (Herlant, S.); Corral, GH (Corral,
G. Herrera); Herrmann, N (Herrmann, N.); Hetland, K (Hetland, K.); Hille, P (Hille, P.); Hinke,
H (Hinke, H.); Hippolyte, B (Hippolyte, B.); Hoch, M (Hoch, M.); Hoebbel, H (Hoebbel, H.);
Hoedlmoser, H (Hoedlmoser, H.); Horaguchi, T (Horaguchi, T.); Horner, M (Horner, M.);
Hristov, P (Hristov, P.); Hrivnacova, I (Hrivnacova, I.); Hu, S (Hu, S.); Guo, CH (Guo, C. Hu);
Humanic, T (Humanic, T.); Hurtado, A (Hurtado, A.); Hwang, DS (Hwang, D. S.); Ianigro, JC
(Ianigro, J. C.); Idzik, M (Idzik, M.); Igolkin, S (Igolkin, S.); Ilkaev, R (Ilkaev, R.); Ilkiv, I
(Ilkiv, I.); Imhoff, M (Imhoff, M.); Innocenti, PG (Innocenti, P. G.); Ionescu, E (Ionescu, E.);
Ippolitov, M (Ippolitov, M.); Irfan, M (Irfan, M.); Insa, C (Insa, C.); Inuzuka, M (Inuzuka, M.);
Ivan, C (Ivan, C.); Ivanov, A (Ivanov, A.); Ivanov, M (Ivanov, M.); Ivanov, V (Ivanov, V.);
Jacobs, P (Jacobs, P.); Jacholkowski, A (Jacholkowski, A.); Jancurova, L (Jancurova, L.); Janik,
R (Janik, R.); Jasper, M (Jasper, M.); Jena, C (Jena, C.); Jirden, L (Jirden, L.); Johnson, DP
(Johnson, D. P.); Jones, GT (Jones, G. T.); Jorgensen, C (Jorgensen, C.); Jouve, F (Jouve, F.);
Jovanovic, P (Jovanovic, P.); Junique, A (Junique, A.); Jusko, A (Jusko, A.); Jung, H (Jung, H.);
Jung, W (Jung, W.); Kadija, K (Kadija, K.); Kamal, A (Kamal, A.); Kamermans, R (Kamermans,
R.); Kapusta, S (Kapusta, S.); Kaidalov, A (Kaidalov, A.); Kakoyan, V (Kakoyan, V.); Kalcher,
S (Kalcher, S.); Kang, E (Kang, E.); Kapitan, J (Kapitan, J.); Kaplin, V (Kaplin, V.); Karadzhev,
K (Karadzhev, K.); Karavichev, O (Karavichev, O.); Karavicheva, T (Karavicheva, T.);
Karpechev, E (Karpechev, E.); Karpio, K (Karpio, K.); Kazantsev, A (Kazantsev, A.);
Kebschull, U (Kebschull, U.); Keidel, R (Keidel, R.); Khan, MM (Khan, M. Mohsin);
Khanzadeev, A (Khanzadeev, A.); Kharlov, Y (Kharlov, Y.); Kikola, D (Kikola, D.); Kileng, B
(Kileng, B.); Kim, D (Kim, D.); Kim, DS (Kim, D. S.); Kim, DW (Kim, D. W.); Kim, HN (Kim,
H. N.); Kim, JS (Kim, J. S.); Kim, S (Kim, S.); Kinson, JB (Kinson, J. B.); Kiprich, SK (Kiprich,
S. K.); Kisel, I (Kisel, I.); Kiselev, S (Kiselev, S.); Kisiel, A (Kisiel, A.); Kiss, T (Kiss, T.);
Kiworra, V (Kiworra, V.); Klay, J (Klay, J.); Bosing, CK (Boesing, C. Klein); Kliemant, M
(Kliemant, M.); Klimov, A (Klimov, A.); Klovning, A (Klovning, A.); Kluge, A (Kluge, A.);
Kluit, R (Kluit, R.); Kniege, S (Kniege, S.); Kolevatov, R (Kolevatov, R.); Kollegger, T
(Kollegger, T.); Kolojvari, A (Kolojvari, A.); Kondratiev, V (Kondratiev, V.); Kornas, E
(Kornas, E.); Koshurnikov, E (Koshurnikov, E.); Kotov, I (Kotov, I.); Kour, R (Kour, R.);
Kowalski, M (Kowalski, M.); Kox, S (Kox, S.); Kozlov, K (Kozlov, K.); Kralik, I (Kralik, I.);
Kramer, F (Kramer, F.); Kraus, I (Kraus, I.); Kravcakova, A (Kravcakova, A.); Krawutschke, T
(Krawutschke, T.); Krivda, M (Krivda, M.); Kryshen, E (Kryshen, E.); Kucheriaev, Y
(Kucheriaev, Y.); Kugler, A (Kugler, A.); Kuhn, C (Kuhn, C.); Kuijer, P (Kuijer, P.); Kumar, L
(Kumar, L.); Kumar, N (Kumar, N.); Kumpumaeki, P (Kumpumaeki, P.); Kurepin, A (Kurepin,
A.); Kurepin, AN (Kurepin, A. N.); Kushpil, S (Kushpil, S.); Kushpil, V (Kushpil, V.);
Kutovsky, M (Kutovsky, M.); Kvaerno, H (Kvaerno, H.); Kweon, M (Kweon, M.); Labbe, JC
(Labbe, J. -C.); Lackner, F (Lackner, F.); de Guevara, PL (de Guevara, P. Ladron); Lafage, V
(Lafage, V.); La Rocca, P (La Rocca, P.); Lamont, M (Lamont, M.); Lara, C (Lara, C.); Larsen,
DT (Larsen, D. T.); Laurenti, G (Laurenti, G.); Lazzeroni, C (Lazzeroni, C.); Le Bornec, Y (Le
Bornec, Y.); Le Bris, N (Le Bris, N.); Le Gailliard, C (Le Gailliard, C.); Lebedev, V (Lebedev,
V.); Lecoq, J (Lecoq, J.); Lee, KS (Lee, K. S.); Lee, SC (Lee, S. C.); Lefevre, F (Lefevre, F.);
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Title: The ALICE experiment at the CERN LHC
Source: JOURNAL OF INSTRUMENTATION, 3: Art. No. S08002 AUG 2008
Abstract: ALICE (A Large Ion Collider Experiment) is a general-purpose, heavy-ion detector at
the CERN LHC which focuses on QCD, the strong-interaction sector of the Standard Model. It is
designed to address the physics of strongly interacting matter and the quark-gluon plasma at
extreme values of energy density and temperature in nucleus-nucleus collisions. Besides running
with Pb ions, the physics programme includes collisions with lighter ions, lower energy running
and dedicated proton-nucleus runs. ALICE will also take data with proton beams at the top LHC
energy to collect reference data for the heavy-ion programme and to address several QCD topics
for which ALICE is complementary to the other LHC detectors. The ALICE detector has been
built by a collaboration including currently over 1000 physicists and engineers from 105
Institutes in 30 countries, Its overall dimensions are 16 x 16 x 26 m(3) with a total weight of
approximately 10 000 t. The experiment consists of 18 different detector systems each with its
own specific technology choice and design constraints, driven both by the physics requirements
and the experimental conditions expected at LHC. The most stringent design constraint is to cope
with the extreme particle multiplicity anticipated in central Pb-Pb collisions. The different
subsystems were optimized to provide high-momentum resolution as well as excellent Particle
Identification (PID) over a broad range in momentum, up to the highest multiplicities predicted
for LHC. This will allow for comprehensive studies of hadrons, electrons, muons, and photons
produced in the collision of heavy nuclei. Most detector systems are scheduled to be installed
and ready for data taking by mid-2008 when the LHC is scheduled to start operation, with the
exception of parts of the Photon Spectrometer (PHOS), Transition Radiation Detector (TRD) and
Electro Magnetic Calorimeter (EMCal). These detectors will be completed for the highluminosity ion run expected in 2010. This paper describes in detail the detector components as
installed for the first data taking in the summer of 2008.
ISSN: 1748-0221
Article Number: S08002
Record 65 of 499
Author(s): Aad, G (Aad, G.); Abat, E (Abat, E.); Abdallah, J (Abdallah, J.); Abdelalim, AA
(Abdelalim, A. A.); Abdesselam, A (Abdesselam, A.); Abdinov, O (Abdinov, O.); Abi, BA (Abi,
B. A.); Abolins, M (Abolins, M.); Abramowicz, H (Abramowicz, H.); Acerbi, E (Acerbi, E.);
Acharya, BS (Acharya, B. S.); Achenbach, R (Achenbach, R.); Ackers, M (Ackers, M.); Adams,
DL (Adams, D. L.); Adamyan, F (Adamyan, F.); Addy, TN (Addy, T. N.); Aderholz, M
(Aderholz, M.); Adorisio, C (Adorisio, C.); Adragna, P (Adragna, P.); Aharrouche, M
(Aharrouche, M.); Ahlen, SP (Ahlen, S. P.); Ahles, F (Ahles, F.); Ahmad, A (Ahmad, A.);
Ahmed, H (Ahmed, H.); Aielli, G (Aielli, G.); Akesson, PF (Akesson, P. F.); Akesson, TPA
(Akesson, T. P. A.); Alam, SM (Alam, S. M.); Albert, J (Albert, J.); Albrand, S (Albrand, S.);
Aleksa, M (Aleksa, M.); Aleksandrov, IN (Aleksandrov, I. N.); Aleppo, M (Aleppo, M.);
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Title: The ATLAS Experiment at the CERN Large Hadron Collider
Abstract: The ATLAS detector as installed in its experimental cavern at point 1 at CERN is
described in this paper. A brief overview of the expected performance of the detector when the
Large Hadron Collider begins operation is also presented.
ISSN: 1748-0221
Record 66 of 499
Author(s): Chatrchyan, S (Chatrchyan, S.); Hmayakyan, G (Hmayakyan, G.); Khachatryan, V
(Khachatryan, V.); Sirunyan, AM (Sirunyan, A. M.); Adam, W (Adam, W.); Bauer, T (Bauer,
T.); Bergauer, T (Bergauer, T.); Bergauer, H (Bergauer, H.); Dragicevic, M (Dragicevic, M.);
Ero, J (Eroe, J.); Friedl, M (Friedl, M.); Fruhwirth, R (Fruehwirth, R.); Ghete, VM (Ghete, V.
M.); Glaser, P (Glaser, P.); Hartl, C (Hartl, C.); Hoermann, N (Hoermann, N.); Hrubec, J
(Hrubec, J.); Hansel, S (Haensel, S.); Jeitler, M (Jeitler, M.); Kastner, K (Kastner, K.); Krammer,
M (Krammer, M.); de Abril, IM (de Abril, I. Magrans); Markytan, M (Markytan, M.); Mikulec, I
(Mikulec, I.); Neuherz, B (Neuherz, B.); Noebauer, T (Noebauer, T.); Oberegger, M (Oberegger,
M.); Padrta, M (Padrta, M.); Pernicka, M (Pernicka, M.); Porth, P (Porth, P.); Rohringer, H
(Rohringer, H.); Schmid, S (Schmid, S.); Schreiner, T (Schreiner, T.); Stark, R (Stark, R.);
Steininger, H (Steininger, H.); Strauss, J (Strauss, J.); Taurok, A (Taurok, A.); Uhl, D (Uhl, D.);
Waltenberger, W (Waltenberger, W.); Walzel, G (Walzel, G.); Widl, E (Widl, E.); Wulz, CE
(Wulz, C. -E.); Petrov, V (Petrov, V.); Prosolovich, V (Prosolovich, V.); Chekhovsky, V
(Chekhovsky, V.); Dvornikov, O (Dvornikov, O.); Emeliantchik, I (Emeliantchik, I.); Litomin, A
(Litomin, A.); Makarenko, V (Makarenko, V.); Marfin, I (Marfin, I.); Mossolov, V (Mossolov,
V.); Shumeiko, N (Shumeiko, N.); Solin, A (Solin, A.); Stefanovitch, R (Stefanovitch, R.);
Gonzalez, JS (Gonzalez, J. Suarez); Tikhonov, A (Tikhonov, A.); Fedorov, A (Fedorov, A.);
Korzhik, M (Korzhik, M.); Missevitch, O (Missevitch, O.); Zuyeuski, R (Zuyeuski, R.);
Beaumont, W (Beaumont, W.); Cardaci, M (Cardaci, M.); De Langhe, E (De Langhe, E.); De
Wolf, EA (De Wolf, E. A.); Delmeire, E (Delmeire, E.); Ochesanu, S (Ochesanu, S.); Tasevsky,
M (Tasevsky, M.); Van Mechelen, P (Van Mechelen, P.); D'Hondt, J (D'Hondt, J.); De Weirdt, S
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(Barberis, E.); Boeriu, O (Boeriu, O.); Eulisse, G (Eulisse, G.); McCauley, T (McCauley, T.);
Musienko, Y (Musienko, Y.); Muzaffar, S (Muzaffar, S.); Osborne, I (Osborne, I.); Reucroft, S
(Reucroft, S.); Swain, J (Swain, J.); Taylor, L (Taylor, L.); Tuura, L (Tuura, L.); Gobbi, B
(Gobbi, B.); Kubantsev, M (Kubantsev, M.); Kubik, A (Kubik, A.); Ofierzynski, RA
(Ofierzynski, R. A.); Schmitt, M (Schmitt, M.); Spencer, E (Spencer, E.); Stoynev, S (Stoynev,
S.); Szleper, M (Szleper, M.); Velasco, M (Velasco, M.); Won, S (Won, S.); Andert, K (Andert,
K.); Baumbaugh, B (Baumbaugh, B.); Beiersdorf, BA (Beiersdorf, B. A.); Castle, L (Castle, L.);
Chorny, J (Chorny, J.); Goussiou, A (Goussiou, A.); Hildreth, M (Hildreth, M.); Jessop, C
(Jessop, C.); Karmgard, DJ (Karmgard, D. J.); Kolberg, T (Kolberg, T.); Marchant, J (Marchant,
J.); Marinelli, N (Marinelli, N.); McKenna, M (McKenna, M.); Ruchti, R (Ruchti, R.);
Vigneault, M (Vigneault, M.); Wayne, M (Wayne, M.); Wiand, D (Wiand, D.); Bylsma, B
(Bylsma, B.); Durkin, LS (Durkin, L. S.); Gilmore, J (Gilmore, J.); Gu, J (Gu, J.); Killewald, P
(Killewald, P.); Ling, TY (Ling, T. Y.); Rush, CJ (Rush, C. J.); Sehgal, V (Sehgal, V.);
Williams, G (Williams, G.); Adam, N (Adam, N.); Chidzik, S (Chidzik, S.); Denes, P (Denes,
P.); Elmer, P (Elmer, P.); Garmash, A (Garmash, A.); Gerbaudo, D (Gerbaudo, D.); Halyo, V
(Halyo, V.); Jones, J (Jones, J.); Marlow, D (Marlow, D.); Olsen, J (Olsen, J.); Piroue, P (Piroue,
P.); Stickland, D (Stickland, D.); Tully, C (Tully, C.); Werner, JS (Werner, J. S.); Wildish, T
(Wildish, T.); Wynhoff, S (Wynhoff, S.); Xie, Z (Xie, Z.); Huang, XT (Huang, X. T.); Lopez, A
(Lopez, A.); Mendez, H (Mendez, H.); Vargas, JER (Vargas, J. E. Ramirez); Zatserklyaniy, A
(Zatserklyaniy, A.); Apresyan, A (Apresyan, A.); Arndt, K (Arndt, K.); Barnes, VE (Barnes, V.
E.); Bolla, G (Bolla, G.); Bortoletto, D (Bortoletto, D.); Bujak, A (Bujak, A.); Everett, A
(Everett, A.); Fahling, M (Fahling, M.); Garfinkel, AF (Garfinkel, A. F.); Gutay, L (Gutay, L.);
Ippolito, N (Ippolito, N.); Kozhevnikov, Y (Kozhevnikov, Y.); Laasanen, AT (Laasanen, A. T.);
Liu, C (Liu, C.); Maroussov, V (Maroussov, V.); Medved, S (Medved, S.); Merkel, P (Merkel,
P.); Miller, DH (Miller, D. H.); Miyamoto, J (Miyamoto, J.); Neumeister, N (Neumeister, N.);
Pompos, A (Pompos, A.); Roy, A (Roy, A.); Sedov, A (Sedov, A.); Shipsey, I (Shipsey, I.);
Cuplov, V (Cuplov, V.); Parashar, N (Parashar, N.); Bargassa, P (Bargassa, P.); Lee, SJ (Lee, S.
J.); Liu, JH (Liu, J. H.); Maronde, D (Maronde, D.); Matveev, M (Matveev, M.); Nussbaum, T
(Nussbaum, T.); Padley, BP (Padley, B. P.); Roberts, J (Roberts, J.); Tumanov, A (Tumanov,
A.); Bodek, A (Bodek, A.); Budd, H (Budd, H.); Cammin, J (Cammin, J.); Chung, YS (Chung,
Y. S.); De Barbaro, P (De Barbaro, P.); Demina, R (Demina, R.); Ginther, G (Ginther, G.);
Gotra, Y (Gotra, Y.); Korjenevski, S (Korjenevski, S.); Miner, DC (Miner, D. C.); Sakumoto, W
(Sakumoto, W.); Slattery, P (Slattery, P.); Zielinski, M (Zielinski, M.); Bhatti, A (Bhatti, A.);
Demortier, L (Demortier, L.); Goulianos, K (Goulianos, K.); Hatakeyama, K (Hatakeyama, K.);
Mesropian, C (Mesropian, C.); Bartz, E (Bartz, E.); Chuang, SH (Chuang, S. H.); Doroshenko, J
(Doroshenko, J.); Halkiadakis, E (Halkiadakis, E.); Jacques, PF (Jacques, P. F.); Khits, D (Khits,
D.); Lath, A (Lath, A.); Macpherson, A (Macpherson, A.); Plano, R (Plano, R.); Rose, K (Rose,
K.); Schnetzer, S (Schnetzer, S.); Somalwar, S (Somalwar, S.); Stone, R (Stone, R.); Watts, TL
(Watts, T. L.); Cerizza, G (Cerizza, G.); Hollingsworth, M (Hollingsworth, M.); Lazoflores, J
(Lazoflores, J.); Ragghianti, G (Ragghianti, G.); Spanier, S (Spanier, S.); York, A (York, A.);
Aurisano, A (Aurisano, A.); Golyash, A (Golyash, A.); Kamon, T (Kamon, T.); Nguyen, CN
(Nguyen, C. N.); Pivarski, J (Pivarski, J.); Safonov, A (Safonov, A.); Toback, D (Toback, D.);
Weinberger, M (Weinberger, M.); Akchurin, N (Akchurin, N.); Berntzon, L (Berntzon, L.);
Carrell, KW (Carrell, K. W.); Gumus, K (Gumus, K.); Jeong, C (Jeong, C.); Kim, H (Kim, H.);
Lee, SW (Lee, S. W.); Mc Gonagill, BG (Mc Gonagill, B. G.); Roh, Y (Roh, Y.); Sill, A (Sill,
A.); Spezziga, M (Spezziga, M.); Thomas, R (Thomas, R.); Volobouev, I (Volobouev, I.);
Washington, E (Washington, E.); Wigmans, R (Wigmans, R.); Yazgan, E (Yazgan, E.); Bapty, T
(Bapty, T.); Engh, D (Engh, D.); Florez, C (Florez, C.); Johns, W (Johns, W.); Keskinpala, T
(Keskinpala, T.); Lopez, EL (Lopez, E. Luiggi); Neema, S (Neema, S.); Nordstrom, S
(Nordstrom, S.); Pathak, S (Pathak, S.); Sheldon, P (Sheldon, P.); Andelin, D (Andelin, D.);
Arenton, MW (Arenton, M. W.); Balazs, M (Balazs, M.); Buehler, M (Buehler, M.); Conetti, S
(Conetti, S.); Cox, B (Cox, B.); Hirosky, R (Hirosky, R.); Humphrey, M (Humphrey, M.); Imlay,
R (Imlay, R.); Ledovskoy, A (Ledovskoy, A.); Phillips, D (Phillips, D., II); Powell, H (Powell,
H.); Ronquest, M (Ronquest, M.); Yohay, R (Yohay, R.); Anderson, M (Anderson, M.); Baek,
YW (Baek, Y. W.); Bellinger, JN (Bellinger, J. N.); Bradley, D (Bradley, D.); Cannarsa, P
(Cannarsa, P.); Carlsmith, D (Carlsmith, D.); Crotty, I (Crotty, I.); Dasu, S (Dasu, S.); Feyzi, F
(Feyzi, F.); Gorski, T (Gorski, T.); Gray, L (Gray, L.); Grogg, KS (Grogg, K. S.); Grothe, M
(Grothe, M.); Jaworski, M (Jaworski, M.); Klabbers, P (Klabbers, P.); Klukas, J (Klukas, J.);
Lanaro, A (Lanaro, A.); Lazaridis, C (Lazaridis, C.); Leonard, J (Leonard, J.); Loveless, R
(Loveless, R.); de Abril, MM (de Abril, M. Magrans); Mohapatra, A (Mohapatra, A.); Ott, G
(Ott, G.); Smith, WH (Smith, W. H.); Weinberg, M (Weinberg, M.); Wenman, D (Wenman, D.);
Atoian, GS (Atoian, G. S.); Dhawan, S (Dhawan, S.); Issakov, V (Issakov, V.); Neal, H (Neal,
H.); Poblaguev, A (Poblaguev, A.); Zeller, ME (Zeller, M. E.); Abdullaeva, G (Abdullaeva, G.);
Avezov, A (Avezov, A.); Fazylov, MI (Fazylov, M. I.); Gasanov, EM (Gasanov, E. M.);
Khugaev, A (Khugaev, A.); Koblik, YN (Koblik, Y. N.); Nishonov, M (Nishonov, M.); Olimov,
K (Olimov, K.); Umaraliev, A (Umaraliev, A.); Yuldashev, BS (Yuldashev, B. S.)
Title: The CMS experiment at the CERN LHC
Abstract: The Compact Muon Solenoid (CMS) detector is described. The detector operates at
the Large Hadron Collider (LHC) at CERN. It was conceived to study proton-proton (and leadlead) collisions at a centre-of-mass energy of 14 TeV (5.5 TeV nucleon-nucleon) and at
luminosities up to 10(34)cm(-2)s(-1) (10(27)cm(-2)s(-1)). At the core of the CMS detector sits a
high-magnetic-field and large-bore superconducting solenoid surrounding an all-silicon pixel and
strip tracker, a lead-tungstate scintillating-crystals electromagnetic calorimeter, and a brassscintillator sampling hadron calorimeter. The iron yoke of the flux-return is instrumented with
four stations of muon detectors covering most of the 4 pi solid angle. Forward sampling
calorimeters extend the pseudo-rapidity coverage to high values (vertical bar eta vertical bar <=
5) assuring very good hermeticity. The overall dimensions of the CMS detector are a length of
21.6 m, a diameter of 14.6 m and a total weight of 12500 t.
ISSN: 1748-0221
Record 67 of 499
Author(s): Matinyan, SG (Matinyan, Sergei G.); Perel'man, ME (Perel'man, Mark E.)
Title: To the theory of unstable states
Source: PHYSICS LETTERS A, 372 (45): 6733-6734 NOV 10 2008
Abstract: Deviations of the decay law from exponents are discussing for a long time, however,
experimental proofs of such deviations are absent. Here in the general form is shown that the
conclusions about non-exponential contributions are due to the disregarding of advanced
interactions, i.e. at principally non-relativistic considerations. We consider decay processes in the
frame of interactions duration of the quantum field theory. We show that at this basis the usual
exponential decay has place. (C) 2008 Published by Elsevier B.V.
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.09.039
Record 68 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Kocharyan, AA (Kocharyan, A. A.)
Title: Kolmogorov stochasticity parameter measuring the randomness in the cosmic microwave
background
Source: ASTRONOMY & ASTROPHYSICS, 492 (2): L33-L34 DEC 2008
Abstract: The Kolmogorov stochasticity parameter (KSP) is applied to quantify the degree of
randomness ( stochasticity) in the temperature maps of the Cosmic Microwave Background
radiation maps. It is shown that the KSP for the WMAP5 maps is about twice as high as that of
the simulated maps for the concordance ACDM cosmological model, implying that a
randomizing effect exists that has not been taken into account by the model. As was revealed
earlier, underdense regions in the large scale matter distributions, i.e. the voids, possess
hyperbolic and, hence, randomizing properties. The degree of randomness for the Cold Spot
appears to be about twice as high as the average of the mean temperature level spots in the sky,
which supports the void nature of the Cold Spot. Kolmogorov's parameter then acts as a
quantitative tracer of the voids by means of the CMB.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200811188
Record 69 of 499
Author(s): Bezerra de Mello, ER (Bezerra de Mello, E. R.); Bezerra, VB (Bezerra, V. B.);
Saharian, AA (Saharian, A. A.); Tarloyan, AS (Tarloyan, A. S.)
Title: Fermionic vacuum polarization by a cylindrical boundary in the cosmic string spacetime
Source: PHYSICAL REVIEW D, 78 (10): Art. No. 105007 NOV 2008
Abstract: The vacuum expectation values of the energy-momentum tensor and the fermionic
condensate are analyzed for a massive spinor field obeying the MIT bag boundary condition on a
cylindrical shell in the cosmic string spacetime. Both regions inside and outside the shell are
considered. By applying to the corresponding mode sums a variant of the generalized Abel-Plana
formula, we explicitly extract the parts in the expectation values corresponding to the cosmic
string geometry without boundaries. In this way the renormalization procedure is reduced to that
for the boundary-free cosmic string spacetime. The parts induced by the cylindrical shell are
presented in terms of integrals rapidly convergent for points away from the boundary. The
behavior of the vacuum densities is investigated in various asymptotic regions of the parameters.
In the limit of large values of the planar angle deficit, the boundary-induced expectation values
are exponentially suppressed. As a special case, we discuss the fermionic vacuum densities for
the cylindrical shell on the background of the Minkowski spacetime.
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.78.105007
Record 70 of 499
Author(s): Horn, T (Horn, T.); Qian, X (Qian, X.); Arrington, J (Arrington, J.); Asaturyan, R
(Asaturyan, R.); Benmokthar, F (Benmokthar, F.); Boeglin, W (Boeglin, W.); Bosted, P (Bosted,
P.); Bruell, A (Bruell, A.); Christy, ME (Christy, M. E.); Chudakov, E (Chudakov, E.); Clasie, B
(Clasie, B.); Dalton, MM (Dalton, M. M.); Daniel, A (Daniel, A.); Day, D (Day, D.); Dutta, D
(Dutta, D.); El Fassi, L (El Fassi, L.); Ent, R (Ent, R.); Fenker, H (Fenker, H.); Ferrer, J (Ferrer,
J.); Fomin, N (Fomin, N.); Gao, H (Gao, H.); Garrow, K (Garrow, K.); Gaskell, D (Gaskell, D.);
Gray, C (Gray, C.); Huber, GM (Huber, G. M.); Jones, MK (Jones, M. K.); Kalantarians, N
(Kalantarians, N.); Keppel, CE (Keppel, C. E.); Kramer, K (Kramer, K.); Li, Y (Li, Y.); Liang, Y
(Liang, Y.); Lung, AF (Lung, A. F.); Malace, S (Malace, S.); Markowitz, P (Markowitz, P.);
Matsumura, A (Matsumura, A.); Meekins, D (Meekins, D.); Mertens, T (Mertens, T.); Miyoshi,
T (Miyoshi, T.); Mkrtchyan, H (Mkrtchyan, H.); Monson, R (Monson, R.); Navasardyan, T
(Navasardyan, T.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Okayasu, Y
(Okayasu, Y.); Opper, AK (Opper, A. K.); Perdrisat, C (Perdrisat, C.); Punjabi, V (Punjabi, V.);
Rauf, AW (Rauf, A. W.); Rodriguez, V (Rodriguez, V.); Rohe, D (Rohe, D.); Seely, J (Seely, J.);
Segbefia, E (Segbefia, E.); Smith, GR (Smith, G. R.); Sumihama, M (Sumihama, M.);
Tadevosyan, V (Tadevosyan, V.); Tang, LG (Tang, L. G.); Tvaskis, V (Tvaskis, V.); Villano, A
(Villano, A.); Vulcan, W (Vulcan, W.); Wesselmann, FR (Wesselmann, F. R.); Wood, SA
(Wood, S. A.); Yuan, L (Yuan, L.); Zheng, XC (Zheng, X. C.)
Title: Scaling study of the pion electroproduction cross sections
Source: PHYSICAL REVIEW C, 78 (5): Art. No. 058201 NOV 2008
Abstract: The H-1(e, e(')pi(+))n cross section was measured for arange of four-momentum
transfer up to Q(2)=3.91 GeV2 at values of the invariant mass W above the resonance region.
The Q(2) dependence of the longitudinal component was found to be consistent with the Q(2)scaling prediction for hard exclusive processes. This suggests that the QCD factorization
theorem is applicable at rather low values of Q(2). The transverse term falls off slower than the
naive Q(-8) expectation and remains appreciable even at Q(2)=3.91 GeV2.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.058201
Record 71 of 499
Author(s): Lorikyan, MP (Lorikyan, M. P.)
Title: Image x-ray emission converters and microstrip porous dielectric x-ray detector
Source: JOURNAL OF APPLIED PHYSICS, 104 (9): Art. No. 094502 NOV 1 2008
Abstract: The effective, fast, and accurate registration of x ray depends on the quality
conversion of the X-quanta to photoelectrons. In this respect, of high interest are porous x-ray
emission converters (PXECs). They are analogs of porous secondary electron emitters (PSEEs);
the only difference is that active porous material should have high absorption properties for the
X-quanta energies to be detected. Microstrip porous dielectric detector (MSPDD) is highly
effective for x-ray registration without preliminary conversion of the X-quanta. Earlier it was
shown that PSEE similar to PXEC has a high emission factor for 1-2 MeV beta-particles and 5
MeV alpha-particles. It was shown that MSPDDs and PSEEs are very stable. (C) 2008 American
Institute of Physics. [DOI: 10.1063/1.2993746]
ISSN: 0021-8979
DOI: 10.1063/1.2993746
Record 72 of 499
UB (de Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Becherini, Y (Becherini,
Y.); Behera, B (Behera, B.); Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.); Boisson, C
(Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R (Buehler, R.); Bulik, T (Bulik,
T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan, S.);
Chadwick, PM (Chadwick, P. M.); Charbonnier, A (Charbonnier, A.); Chaves, RCG (Chaves, R.
C. G.); Cheesebrough, A (Cheesebrough, A.); Chounet, LM (Chounet, L. -M.); Clapson, AC
(Clapson, A. C.); Coignet, G (Coignet, G.); Dalton, M (Dalton, M.); Degrange, B (Degrange,
B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Atai, A.);
Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F (Dubois, F.); Dubus, G
(Dubus, G.); Dyks, J (Dyks, J.); Dyrda, M (Dyrda, M.); Egberts, K (Egberts, K.);
(Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C (Hadjichristidis, C.); Hauser, D (Hauser,
D.); Hauser, M (Hauser, M.); Heinz, S (Heinz, S.); Heinzelmann, G (Heinzelmann, G.); Henri, G
(Henri, G.); Hermann, G (Hermann, G.); Hinton, JA (Hinton, J. A.); Hoffmann, A (Hoffmann,
A.); Hofmann, W (Hofmann, W.); Holleran, M (Holleran, M.); Hoppe, S (Hoppe, S.); Horns, D
(Horns, D.); Jacholkowska, A (Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Jung, I (Jung,
I.); Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra,
Title: Simultaneous HESS and Chandra observations of Sagitarius A(star) during an X-ray flare
Source: ASTRONOMY & ASTROPHYSICS, 492 (1): L25-L28 DEC 2008
Abstract: The rapidly varying (similar to 10 min timescale) non-thermal X-ray emission
observed from Sgr A(star) implies that particle acceleration is occuring close to the event
horizon of the supermassive black hole. The TeV gamma-ray source HESS J1745-290 is
coincident with Sgr A(star) and may be closely related to its X-ray emission. Simultaneous X-ray
and TeV observations are required to elucidate the relationship between these objects. We report
on joint HESS/Chandra observations performed in July 2005, during which an X-ray flare was
detected. Despite a factor of approximate to 9 increase in the X-ray flux of Sgr A(star), no
evidence is found for an increase in the TeV gamma-ray flux from this region. We find that an
increase in the gamma-ray flux of a factor of 2 or greater can be excluded at a confidence level
of 99%. This finding disfavours scenarios in which the keV and TeV emission are associated
with the same population of accelerated particles and in which the bulk of the gamma-ray
emission is produced within similar to 1014 cm (similar to 100 RS) of the supermassive black
hole.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200810912
Record 73 of 499
Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bernardini, E (Bernardini, E.); Bigongiari,
C (Bigongiari, C.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.); Bonnoli, G (Bonnoli, G.);
Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I
Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); del Pozo, EDC (De Cea del Pozo, E.); de
los Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
Dorner, D (Dorner, D.); Doro, M (Doro, M.); Elsasser, D (Elsasser, D.); Errando, M (Errando,
M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R
RJG (Garcia Lopez, R. J.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F
A.); Hohne, D (Hohne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S (Huber, S.);
Jogler, T (Jogler, T.); Kranich, D (Kranich, D.); La Barbera, A (La Barbera, A.); Laille, A
(Laille, A.); Leonardo, E (Leonardo, E.); Lindfors, E (Lindfors, E.); Lombardi, S (Lombardi, S.);
Longo, F (Longo, F.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar,
P.); Maneva, G (Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim,
K.); Maraschi, L (Maraschi, L.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin,
D (Mazin, D.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.);
Mirzoyan, R (Mirzoyan, R.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D
(Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.); Oya, I (Oya,
(Prada, F.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.);
Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A
(Robert, A.); Rugamer, S (Rugamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.);
N.); Sidro, N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A
(Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A
Zapatero, J (Zapatero, J.); de Jager, OC (de Jager, O. C.); Wilhelmi, ED (Wilhelmi, E. de Ona)
Group Author(s): MAGIC Collaboration
Title: Observation of Pulsed gamma-Rays Above 25 GeV from the Crab Pulsar with MAGIC
Source: SCIENCE, 322 (5905): 1221-1224 NOV 21 2008
Abstract: One fundamental question about pulsars concerns the mechanism of their pulsed
electromagnetic emission. Measuring the high- end region of a pulsar's spectrum would shed
light on this question. By developing a new electronic trigger, we lowered the threshold of the
Major Atmospheric gamma-ray Imaging Cherenkov (MAGIC) telescope to 25 giga-electron
volts. In this configuration, we detected pulsed gamma-rays from the Crab pulsar that were
greater than 25 giga-electron volts, revealing a relatively high cutoff energy in the phaseaveraged spectrum. This indicates that the emission occurs far out in the magnetosphere, hence
excluding the polar- cap scenario as a possible explanation of our measurement. The high cutoff
energy also challenges the slot- gap scenario.
ISSN: 0036-8075
DOI: 10.1126/science.1164718
Record 74 of 499
Mendez, CD (Mendez, C. Delgado); de los Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto,
B.); De Maria, M (De Maria, M.); De Sabata, F (De Sabata, F.); Dominguez, A (Dominguez,
A.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M (Errando, M.); Fagiolini, M
(Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.);
Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Galante, N (Galante, N.); Lopez, RJG
(Lopez, R. J. Garcia); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F
(Goebel, F.); Hayashida, M (Hayashida, M.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.);
Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S (Huber, S.); Jogler, T (Jogler, T.); Kranich, D
(Kranich, D.); La Barbera, A (La Barbera, A.); Laille, A (Laille, A.); Leonardo, E (Leonardo,
E.); Lindfors, E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, M
(Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.);
Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Maraschi, L (Maraschi, L.);
Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Meucci, M
(Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan,
R.); Moles, M (Moles, M.); Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K
(Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.); Oya, I (Oya, I.); Panniello, M
(Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen,
M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-Torres, MA
(Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.);
Prada, F (Prada, F.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A
(Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi,
M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggioni, A (Saggioni, A.); Saito, TY
(Saito, T. Y.); Salvati, M (Salvati, M.); Sanchez-Conde, M (Sanchez-Conde, M.); Sartori, P
(Sartori, P.); Satalecka, K (Satalecka, K.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.);
K (Shinozaki, K.); Sidro, N (Sidro, N.); Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.);
Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier, F.);
Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Tavecchio, F
M.); Tluczykont, M (Tluczykont, M.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.);
Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V (Vitale, V.); Wagner, RM
(Wagner, R. M.); Wittek, W (Wittek, W.); Zabalza, V (Zabalza, V.); Zandanel, F (Zandanel, F.);
Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.); Ellis, J (Ellis, John); Mavromatos, NE
(Mavromatos, N. E.); Nanopoulos, DV (Nanopoulos, D. V.); Sakharov, AS (Sakharov, A. S.);
Sarkisyan, EKG (Sarkisyan, E. K. G.)
Title: Probing quantum gravity using photons from a flare of the active galactic nucleus
Markarian 501 observed by the MAGIC telescope
Source: PHYSICS LETTERS B, 668 (4): 253-257 OCT 16 2008
Abstract: We analyze the timing of photons observed by the MAGIC telescope during a flare of
the active galactic nucleus Mkn 501 for a possible correlation with energy, as suggested by some
models of quantum gravity (QG), which predict a vacuum refractive index similar or equal to 1 +
(E/M-QGn)(n), n = 1, 2. Parametrizing the delay between gamma-rays of different energies as
Delta t = +/-tau E-1 or Delta t = +/-tau E-q(2), we find tau(1) = (0.030 +/- 0.012) s/GeV at the
2.5-sigma level, and tau(q) = (3.71 +/- 2.57) x 10(-6) s/GeV2, respectively. We use these results
to establish lower limits M-QG1 > 0.21 X 10(18) GeV and M-QG2 > 0.26 x 10(11) GeV at the
95% C.L. Monte Carlo studies confirm the MAGIC sensitivity to propagation effects at these
levels. Thermal plasma effects in the source are negligible, but we cannot exclude the
importance of some other source effect. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.08.053
Record 75 of 499
A (Baghdasaryan, A.); Baranov, P (Baranov, P.); Barrelet, E (Barrelet, E.); Bartel, W (Bartel,
W.); Beckingham, M (Beckingham, M.); Begzsuren, K (Begzsuren, K.); Behnke, O (Behnke,
O.); Belousov, A (Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO
Ferencei, J (Ferencei, J.); Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Gabathuler,
E (Gabathuler, E.); Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Glazov, A (Glazov, A.);
Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich, L.); Goettlich, M (Goettlich, M.); Gogitidze,
N (Gogitidze, N.); Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T
(Greenshaw, T.); Grell, BR (Grell, B. R.); Grindhammer, G (Grindhammer, G.); Habib, S
(Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.); Helebrant, C (Helebrant, C.);
Henderson, RCW (Henderson, R. C. W.); Hennekemper, E (Hennekemper, E.); Henschel, H
(Henschel, H.); Herrera, G (Herrera, G.); Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller,
K. H.); Hoffmann, D (Hoffmann, D.); Horisberger, R (Horisberger, R.); Hovhannisyan, A
(Hovhannisyan, A.); Hreus, T (Hreus, T.); Jacquet, M (Jacquet, M.); Janssen, ME (Janssen, M.
E.); Janssen, X (Janssen, X.); Jemanov, V (Jemanov, V.); Jonsson, L (Jonsson, L.); Johnson, DP
(Johnson, D. P.); Jung, AW (Jung, A. W.); Jung, H (Jung, H.); Kapichine, M (Kapichine, M.);
Katzy, J (Katzy, J.); Kenyon, IR (Kenyon, I. R.); Kiesling, C (Kiesling, C.); Klein, M (Klein,
M.); Kleinwort, C (Kleinwort, C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.);
Knutsson, A (Knutsson, A.); Kogler, R (Kogler, R.); Korbel, V (Korbel, V.); Kostka, P (Kostka,
P.); Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar, J (Kretzschmar, J.);
Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Kutak, K (Kutak, K.);
N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce,
AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski,
E (Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti, Ll.); Martyn, HU (Martyn, H. -U.);
Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer,
A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels,
V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.);
Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Mudrinic,
M (Mudrinic, M.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov, K.);
Naroska, B (Naroska, B.); Naumann, T (Naumann, Th.); Newman, PR (Newman, P. R.);
Niebuhr, C (Niebuhr, C.); Nikiforov, A (Nikiforov, A.); Nowak, G (Nowak, G.); Nowak, K
(Nowak, K.); Nozicka, M (Nozicka, M.); Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.);
Osman, S (Osman, S.); Ozerov, D (Ozerov, D.); Palichik, V (Palichik, V.); Panagoulias, I
(Panagoulias, I.); Pandurovic, M (Pandurovic, M.); Papadopoulou, T (Papadopoulou, Th.);
Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Pejchal, O (Pejchal, O.); Peng, H (Peng, H.);
Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl,
D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T
(Preda, T.); Radescu, V (Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.);
Raspiareza, A (Raspiareza, A.); Ravdandorj, T (Ravdandorj, T.); Reimer, P (Reimer, P.); Rizvi,
E (Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen, R.);
Rostovtsev, A (Rostovtsev, A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Tabasco, J. E. Ruiz);
Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D (Salek, D.); Salvaire, F
(Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.);
Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L
(Schoeffel, L.); Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.);
Sefkow, F (Sefkow, F.); Shaw-West, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.);
Shtarkov, LN (Shtarkov, L. N.); Shushkevich, S (Shushkevich, S.); Sloan, T (Sloan, T.);
Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.); Soloviev, Y (Soloviev, Y.); Sopicki, P
(Sopicki, P.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka, A.);
Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B (Stella, B.); Straumann, U
(Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov, V.);
Thompson, G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F
(Tomasz, F.); Tran, TH (Tran, T. H.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol,
P (Truoel, P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsurin, I (Tsurin, I.);
Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Valkarova, A
(Volchinski, V.); Wegener, D (Wegener, D.); Wessels, M (Wessels, M.); Wissing, C (Wissing,
Ch.); Wunsch, E (Wuensch, E.); Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J
(Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu,
YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F
(Zomer, F.)
Title: Multi-lepton production at high transverse momenta in ep collisions at HERA
Source: PHYSICS LETTERS B, 668 (4): 268-276 OCT 16 2008
Abstract: Processes leading to a final state with at least two high transverse momentum leptons
(electrons or muons) are studied using the full e(+/-) p data sample collected by the H1
experiment at HERA. The data correspond to an integrated luminosity of 463 pb(-1). Di-lepton
and tri-lepton event classes are investigated. Cross sections of the production of e(+)e(-) and
mu(+)mu(-) pairs are derived in a restricted phase space dominated by photon-photon collisions.
In general, good agreement is found with Standard Model predictions. Events are observed with
a total scalar sum of lepton transverse momenta above 100 GeV where the Standard Model
expectation is low. In this region, combining di-lepton and tri-lepton classes, five events are
observed in e(+) p collisions, compared to a Standard Model expectation of 0.96 +/- 0.12, while
no such event is observed in e(-) p data for 0.64 +/- 0.09 expected. (C) 2008 Elsevier B.V. All
rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.08.057
Record 76 of 499
UB (de Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Becherini, Y (Becherini,
Y.); Behera, B (Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Bernlohr, K
(Bernloehr, K.); Boisson, C (Boisson, C.); Bochow, A (Bochow, A.); Borrel, V (Borrel, V.);
Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R
(Buehler, R.); Bulik, T (Bulik, T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.);
Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P. M.); Charbonnier, A (Charbonnier, A.);
Chaves, RCG (Chaves, R. C. G.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A.
C.); Coignet, G (Coignet, G.); Costamante, L (Costamante, L.); Dalton, M (Dalton, M.);
Degrange, B (Degrange, B.); Deil, C (Deil, C.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai,
A (Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F
D.); Hauser, M (Hauser, M.); Heinz, S (Heinz, S.); Heinzelmann, G (Heinzelmann, G.); Henri, G
(Henri, G.); Hermann, G (Hermann, G.); Hinton, JA (Hinton, J. A.); Hoffmann, A (Hoffmann,
A.); Hofmann, W (Hofmann, W.); Holleran, M (Holleran, M.); Hoppe, S (Hoppe, S.); Horns, D
(Horns, D.); Jacholkowska, A (Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Jung, I (Jung,
I.); Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra,
(Marcowith, A.); Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.); Medina, C
(Medina, C.); Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); Naumann-Godo, M
M.); Rieger, F (Rieger, F.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (RosierLees, S.); Rowell, G (Rowell, G.); Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V
(Sahakian, V.); Santangelo, A (Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM
(Schoeck, F. M.); Schroder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S
(Schwarzburg, S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Skilton, JL
(Skilton, J. L.); Sol, H (Sol, H.); Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.);
Steenkamp, R (Steenkamp, R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam,
PH (Tam, P. H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); Tibolla, O (Tibolla, O.);
van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP
(Vialle, J. P.); Vincent, P (Vincent, P.); Vivier, M (Vivier, M.); Volk, HJ (Voelk, H. J.); Volpe, F
(Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA (Zdziarski, A. A.);
Zech, A (Zech, A.)
Title: Limits on an Energy Dependence of the Speed of Light from a Flare of the Active Galaxy
PKS 2155-304
Source: PHYSICAL REVIEW LETTERS, 101 (17): Art. No. 170402 OCT 24 2008
Abstract: In the past few decades, several models have predicted an energy dependence of the
speed of light in the context of quantum gravity. For cosmological sources such as active
galaxies, this minuscule effect can add up to measurable photon-energy dependent time lags. In
this Letter a search for such time lags during the High Energy Stereoscopic System observations
of the exceptional very high energy flare of the active galaxy PKS 2155-304 on 28 July 2006 is
presented. Since no significant time lag is found, lower limits on the energy scale of speed of
light modifications are derived.
ISSN: 0031-9007
Record 77 of 499
Author(s): Saakian, DB (Saakian, David B.); Rozanova, O (Rozanova, Olga); Akmetzhanov, A
(Akmetzhanov, Andrei)
Title: Dynamics of the Eigen and the Crow-Kimura models for molecular evolution
Source: PHYSICAL REVIEW E, 78 (4): Art. No. 041908 Part 1 OCT 2008
Abstract: We introduce an alternative way to study molecular evolution within well-established
Hamilton-Jacobi formalism, showing that for a broad class of fitness landscapes it is possible to
derive dynamics analytically within the 1/N accuracy, where N is the genome length. For a
smooth and monotonic fitness function this approach gives two dynamical phases: smooth
dynamics and discontinuous dynamics. The latter phase arises naturally with no explicite
singular fitness function, counterintuitively. The Hamilton-Jacobi method yields straightforward
analytical results for the models that utilize fitness as a function of Hamming distance from a
reference genome sequence. We also show the way in which this method gives dynamical phase
structure for multipeak fitness.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.78.041908
Record 78 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); Almeida,
Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Bernlohr, K (Bernloehr, K.); Bertone, G
(Bertone, G.); Boisson, C (Boisson, C.); Bochow, A (Bochow, A.); Borrel, V (Borrel, V.);
Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J (Brucker, J.); Brun, P (Brun, P.); Buhler, R
(Buehler, R.); Bulik, T (Bulik, T.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.);
Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P. M.); Chaves, RCG (Chaves, R. C. G.);
Costamante, L (Costamante, L.); Dalton, M (Dalton, M.); Degrange, B (Degrange, B.);
Dyks, J (Dyks, J.); Egberts, K (Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.);
Espigat, P (Espigat, P.); Farnier, C (Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson,
A.); Forster, A (Foerster, A.); Fontaine, G (Fontaine, G.); Fussling, M (Fuessling, M.); Gabici, S
(Gabici, S.); Gallant, YA (Gallant, Y. A.); Gerard, L (Gerard, L.); Giebels, B (Giebels, B.);
Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C
Hoppe, S (Hoppe, S.); Horns, D (Horns, D.); Jacholkowska, A (Jacholkowska, A.); Jager, OC
(de Jager, O. C.); Jung, I (Jung, I.); Katarzynski, K (Katarzynski, K.); Kaufmann, S (Kaufmann,
S.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khangulyan, D
(Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D (Keogh, D.); Komin, N (Komin, Nu.);
Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); Lenain, JP
(Lenain, J. -P.); Lohse, T (Lohse, T.); Marandon, V (Marandon, V.); Martin, JM (Martin, J. M.);
Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Masterson, C
(Masterson, C.); Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.); Moderski, R
(Moderski, R.); Moulin, E (Moulin, E.); Naumann-Godo, M (Naumann-Godo, M.); Naurois, M
(de Naurois, M.); Nedbal, D (Nedbal, D.); Nekrassov, D (Nekrassov, D.); Niemiec, J (Niemiec,
J.); Nolan, SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JP (Olive, J-P.); de OnaWilhelmi, E (de
OnaWilhelmi, E.); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Ostrowski, M
(Ostrowski, M.); Panter, M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.);
Petrucci, PO (Petrucci, P. -O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M
(Punch, M.); Quirrenbach, A (Quirrenbach, A.); Raubenheimer, BC (Raubenheimer, B. C.);
Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.); Renaud, M (Renaud, M.); Rieger, F (Rieger,
F.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G
(Rowell, G.); Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.);
Santangelo, A (Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM (Schoeck, F.
M.); Schroder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg,
S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Skilton, JL (Skilton, J. L.); Sol,
H (Sol, H.); Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp,
R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet,
JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); Tibolla, O (Tibolla, O.); Eldik, C (van Eldik, C.);
Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P
Title: Search for gamma rays from dark matter annihilations around intermediate mass black
holes with the HESS experiment
Source: PHYSICAL REVIEW D, 78 (7): Art. No. 072008 OCT 2008
Abstract: The HESS array of Cherenkov telescopes has performed, from 2004 to 2007, a survey
of the inner galactic plane at photon energies above 100 GeV. About 400 hours of data have
been accumulated in the region between -30 and +60 degrees in galactic longitude, and between
-3 and +3 degrees in galactic latitude. Assuming that dark matter is composed of weakly
interacting massive particles, we calculate here the HESS sensitivity map for dark matter
annihilations, and derive the first experimental constraints on the ("minispikes") scenario, in
which a gamma-ray signal arises from dark matter annihilation around intermediate mass black
holes. The data exclude the proposed scenario at a 90% confidence level for dark matter particles
with velocity-weighted annihilation cross section sigma v above 10(-28) cm(3) s(-1) and mass
between 800 GeV and 10 TeV.
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.78.072008
Record 79 of 499
Author(s): Blok, HP (Blok, H. P.); Horn, T (Horn, T.); Huber, GM (Huber, G. M.); Beise, EJ
(Beise, E. J.); Gaskell, D (Gaskell, D.); Mack, DJ (Mack, D. J.); Tadevosyan, V (Tadevosyan,
V.); Volmer, J (Volmer, J.); Abbott, D (Abbott, D.); Aniol, K (Aniol, K.); Anklin, H (Anklin,
H.); Armstrong, C (Armstrong, C.); Arrington, J (Arrington, J.); Assamagan, K (Assamagan,
K.); Avery, S (Avery, S.); Baker, OK (Baker, O. K.); Barrett, B (Barrett, B.); Bochna, C
(Bochna, C.); Boeglin, W (Boeglin, W.); Brash, EJ (Brash, E. J.); Breuer, H (Breuer, H.); Chang,
CC (Chang, C. C.); Chant, N (Chant, N.); Christy, ME (Christy, M. E.); Dunne, J (Dunne, J.);
Eden, T (Eden, T.); Ent, R (Ent, R.); Fenker, H (Fenker, H.); Gibson, E (Gibson, E.); Gilman, R
(Gilman, R.); Gustafsson, K (Gustafsson, K.); Hinton, W (Hinton, W.); Holt, RJ (Holt, R. J.);
Jackson, H (Jackson, H.); Jin, S (Jin, S.); Jones, MK (Jones, M. K.); Keppel, CE (Keppel, C. E.);
Kim, PH (Kim, P. H.); Kim, W (Kim, W.); King, PM (King, P. M.); Klein, A (Klein, A.);
Koltenuk, D (Koltenuk, D.); Kovaltchouk, V (Kovaltchouk, V.); Liang, M (Liang, M.); Liu, J
(Liu, J.); Lolos, GJ (Lolos, G. J.); Lung, A (Lung, A.); Margaziotis, DJ (Margaziotis, D. J.);
Markowitz, P (Markowitz, P.); Matsumura, A (Matsumura, A.); Mckee, D (McKee, D.);
Meekins, D (Meekins, D.); Mitchell, J (Mitchell, J.); Miyoshi, T (Miyoshi, T.); Mkrtchyan, H
(Mkrtchyan, H.); Mueller, B (Mueller, B.); Niculescu, G (Niculescu, G.); Niculescu, I
(Niculescu, I.); Okayasu, Y (Okayasu, Y.); Pentchev, L (Pentchev, L.); Perdrisat, C (Perdrisat,
C.); Pitz, D (Pitz, D.); Potterveld, D (Potterveld, D.); Punjabi, V (Punjabi, V.); Qin, LM (Qin, L.
M.); Reimer, P (Reimer, P.); Reinhold, J (Reinhold, J.); Roche, J (Roche, J.); Roos, PG (Roos, P.
G.); Sarty, A (Sarty, A.); Shin, IK (Shin, I. K.); Smith, GR (Smith, G. R.); Stepanyan, S
(Stepanyan, S.); Tang, LG (Tang, L. G.); Tvaskis, V (Tvaskis, V.); Meer, RLJD (van der Meer,
R. L. J.); Vansyoc, K (Vansyoc, K.); Van Westrum, D (Westrum, D. Van); Vidakovic, S
(Vidakovic, S.); Vulcan, W (Vulcan, W.); Warren, G (Warren, G.); Wood, SA (Wood, S. A.);
Xu, C (Xu, C.); Yan, C (Yan, C.); Zhao, WX (Zhao, W. -X.); Zheng, X (Zheng, X.); Zihlmann,
B (Zihlmann, B.)
Title: Charged pion form factor between Q(2)=0.60 and 2.45 GeV2. I. Measurements of the
cross section for the H-1(e,e(')pi(+))n reaction
Source: PHYSICAL REVIEW C, 78 (4): Art. No. 045202 OCT 2008
Abstract: Cross sections for the reaction H-1(e,e(')pi(+))n were measured in Hall C at Thomas
Jefferson National Accelerator Facility (JLab) using the high-intensity Continuous Electron
Beam Accelerator Facility (CEBAF) to determine the charged pion form factor. Data were taken
for central four-momentum transfers ranging from Q(2)=0.60 to 2.45 GeV2 at an invariant mass
of the virtual photon-nucleon system of W=1.95 and 2.22 GeV. The measured cross sections
were separated into the four structure functions sigma(L),sigma(T),sigma(LT), and sigma(TT).
The various parts of the experimental setup and the analysis steps are described in detail,
including the calibrations and systematic studies, which were needed to obtain high-precision
results. The different types of systematic uncertainties are also discussed. The results for the
separated cross sections as a function of the Mandelstam variable t at the different values of Q(2)
are presented. Some global features of the data are discussed, and the data are compared with the
results of some model calculations for the reaction H-1(e,e(')pi(+))n.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.045202
Record 80 of 499
Author(s): Huber, GM (Huber, G. M.); Blok, HP (Blok, H. P.); Horn, T (Horn, T.); Beise, EJ
(Beise, E. J.); Gaskell, D (Gaskell, D.); Mack, DJ (Mack, D. J.); Tadevosyan, V (Tadevosyan,
V.); Volmer, J (Volmer, J.); Abbott, D (Abbott, D.); Aniol, K (Aniol, K.); Anklin, H (Anklin,
H.); Armstrong, C (Armstrong, C.); Arrington, J (Arrington, J.); Assamagan, K (Assamagan,
K.); Avery, S (Avery, S.); Baker, OK (Baker, O. K.); Barrett, B (Barrett, B.); Bochna, C
(Bochna, C.); Boeglin, W (Boeglin, W.); Brash, EJ (Brash, E. J.); Breuer, H (Breuer, H.); Chang,
CC (Chang, C. C.); Chant, N (Chant, N.); Christy, ME (Christy, M. E.); Dunne, J (Dunne, J.);
Eden, T (Eden, T.); Ent, R (Ent, R.); Fenker, H (Fenker, H.); Gibson, EF (Gibson, E. F.);
Gilman, R (Gilman, R.); Gustafsson, K (Gustafsson, K.); Hinton, W (Hinton, W.); Holt, RJ
(Holt, R. J.); Jackson, H (Jackson, H.); Jin, S (Jin, S.); Jones, MK (Jones, M. K.); Keppel, CE
(Keppel, C. E.); Kim, PH (Kim, P. H.); Kim, W (Kim, W.); King, PM (King, P. M.); Klein, A
(Klein, A.); Koltenuk, D (Koltenuk, D.); Kovaltchouk, V (Kovaltchouk, V.); Liang, M (Liang,
M.); Liu, J (Liu, J.); Lolos, GJ (Lolos, G. J.); Lung, A (Lung, A.); Margaziotis, DJ (Margaziotis,
D. J.); Markowitz, P (Markowitz, P.); Matsumura, A (Matsumura, A.); Mckee, D (McKee, D.);
Meekins, D (Meekins, D.); Mitchell, J (Mitchell, J.); Miyoshi, T (Miyoshi, T.); Mkrtchyan, H
(Mkrtchyan, H.); Mueller, B (Mueller, B.); Niculescu, G (Niculescu, G.); Niculescu, I
(Niculescu, I.); Okayasu, Y (Okayasu, Y.); Pentchev, L (Pentchev, L.); Perdrisat, C (Perdrisat,
C.); Pitz, D (Pitz, D.); Potterveld, D (Potterveld, D.); Punjabi, V (Punjabi, V.); Qin, LM (Qin, L.
M.); Reimer, PE (Reimer, P. E.); Reinhold, J (Reinhold, J.); Roche, J (Roche, J.); Roos, PG
(Roos, P. G.); Sarty, A (Sarty, A.); Shin, IK (Shin, I. K.); Smith, GR (Smith, G. R.); Stepanyan,
S (Stepanyan, S.); Tang, LG (Tang, L. G.); Tvaskis, V (Tvaskis, V.); Meer, RLJD (van der Meer,
R. L. J.); Vansyoc, K (Vansyoc, K.); Van Westrum, D (Westrum, D. Van); Vidakovic, S
(Vidakovic, S.); Vulcan, W (Vulcan, W.); Warren, G (Warren, G.); Wood, SA (Wood, S. A.);
Xu, C (Xu, C.); Yan, C (Yan, C.); Zhao, WX (Zhao, W. -X.); Zheng, X (Zheng, X.); Zihlmann,
B (Zihlmann, B.)
Title: Charged pion form factor between Q(2)=0.60 and 2.45 GeV2. II. Determination of, and
results for, the pion form factor
Abstract: The charged pion form factor, F-pi(Q(2)), is an important quantity that can be used to
advance our knowledge of hadronic structure. However, the extraction of F-pi from data requires
a model of the H-1(e,e(')pi(+))n reaction and thus is inherently model dependent. Therefore, a
detailed description of the extraction of the charged pion form factor from electroproduction data
obtained recently at Jefferson Lab is presented, with particular focus given to the dominant
uncertainties in this procedure. Results for F-pi are presented for Q(2)=0.60-2.45 GeV2. Above
Q(2)=1.5 GeV2, the F-pi values are systematically below the monopole parametrization that
describes the low Q(2) data used to determine the pion charge radius. The pion form factor can
be calculated in a wide variety of theoretical approaches, and the experimental results are
compared to a number of calculations. This comparison is helpful in understanding the role of
soft versus hard contributions to hadronic structure in the intermediate Q(2) regime.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.045203
Record 81 of 499
Author(s): Biselli, AS (Biselli, A. S.); Burkert, VD (Burkert, V. D.); Amaryan, MJ (Amaryan,
M. J.); Asryan, G (Asryan, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.);
Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Battaglieri, M
(Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna,
N.); Berman, BL (Berman, B. L.); Blaszczyk, L (Blaszczyk, L.); Bookwalter, C (Bookwalter,
C.); Boiarinov, S (Boiarinov, S.); Bosted, P (Bosted, P.); Bradford, R (Bradford, R.); Branford,
D (Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.); Bultmann, S
(Bueltmann, S.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL
(Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Chen, S (Chen, S.); Cheng,
L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Crabb,
D (Crabb, D.); Crede, V (Crede, V.); Dale, D (Dale, D.); Dashyan, N (Dashyan, N.); Masi, R (De
Masi, R.); Vita, R (De Vita, R.); Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P.
V.); Deur, A (Deur, A.); Dhamija, S (Dhamija, S.); Dickson, R (Dickson, R.); Djalali, C (Djalali,
C.); Dodge, GE (Dodge, G. E.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.); Dzyubak,
OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri,
L.); Eugenio, P (Eugenio, P.); Fedotov, G (Fedotov, G.); Feuerbach, R (Feuerbach, R.); Fersch,
R (Fersch, R.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Garcon, M (Garcon, M.);
Gavaliann, G (Gavaliann, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.);
Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gohn, W
(Gohn, W.); Gothe, RW (Gothe, R. W.); Graham, L (Graham, L.); Griffioen, KA (Griffioen, K.
A.); Guidal, M (Guidal, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan,
V.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hanretty, C (Hanretty, C.); Hassall, N
(Hassall, N.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); HydeWright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov,
BS (Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins,
D.); Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst,
H. G.); Kalantarians, N (Kalantarians, N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J. D.);
Khandaker, M (Khandaker, M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F.
J.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J
(Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov,
V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.);
Lawrence, D (Lawrence, D.); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick,
M (MacCormick, M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McKinnon, B
(McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mestayer,
MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K
(Mikhailov, K.); Mirazita, M (Mirazita, M.); Mokeev, V (Mokeev, V.); Moreno, B (Moreno, B.);
Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.); Moteabbed, M (Moteabbed, M.);
Munevar, E (Munevar, E.); Mutchler, GS (Mutchler, G. S.); Nadel-Turonski, P (Nadel-Turonski,
P.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.);
Niculescu, I (Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.);
Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.);
Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Park, S (Park, S.); Pasyuk, E (Pasyuk,
E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.); Pivnyuk,
N (Pivnyuk, N.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Price, JW
(Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.);
G.); Rossi, P (Rossi, P.); Sabatie, F (Sabatie, F.); Saini, MS (Saini, M. S.); Salamanca, J
(Salamanca, J.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J. P.); Sapunenko, V
(Sapunenko, V.); Schott, D (Schott, D.); Schumacher, RA (Schumacher, R. A.); Serov, VS
(Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV
(Shvedunov, N. V.); Smith, ES (Smith, E. S.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.);
Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.);
Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S
(Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze,
A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.); Ungaro, M (Ungaro, M.); Vineyard,
MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB
(Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yurov, M (Yurov,
M.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: First measurement of target and double spin asymmetries for ep -> ep pi(0) in the nucleon
resonance region above the Delta(1232)
Abstract: The exclusive channel p(e,e(')p)pi(0) was studied in the first and second nucleon
resonance regions in the Q(2) range from 0.187 to 0.770 GeV2 at Jefferson Lab using the
CEBAF Large Acceptance Spectrometer. Longitudinal target and beam-target asymmetries were
extracted over a large range of center-of-mass angles of the pi(0) and compared to the unitary
isobar model MAID, the dynamic model by Sato and Lee, and the dynamic model DMT. A
strong sensitivity to individual models was observed, in particular for the target asymmetry and
in the higher invariant mass region. This data set, once included in the global fits of the above
models, is expected to place strong constraints on the electrocoupling amplitudes A(1/2) and S1/2 for the Roper resonance N(1400)P-11 and the N(1535)S-11 and N(1520)D-13 states.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.045204
Record 82 of 499
Author(s): Aznauryan, IG (Aznauryan, I. G.); Burkert, VD (Burkert, V. D.); Kim, W (Kim, W.);
Park, K (Park, K.); Adams, G (Adams, G.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P
(Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan, G.); Avakian, H
Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Batourine, V (Batourine, V.); Battaglieri,
M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M
(Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS (Biselli,
A. S.); Blaszczyk, L (Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bookwalter, C (Bookwalter,
C.); Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.);
Branford, D (Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.);
Bultmann, S (Bueltmann, S.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.);
Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Cazes, A
(Cazes, A.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P
(Collins, P.); Coltharp, P (Coltharp, P.); Cords, D (Cords, D.); Corvisiero, P (Corvisiero, P.);
Crabb, D (Crabb, D.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dale, D (Dale,
D.); Dashyan, N (Dashyan, N.); De Masi, R (Masi, R. De); De Vita, R (Vita, R. De); De Sanctis,
E (Sanctis, E. De); Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L
(Dennis, L.); Deur, A (Deur, A.); Dhamija, S (Dhamija, S.); Dharmawardane, KV
(Dharmawardane, K. V.); Dhuga, KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Djalali, C
(Djalali, C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.);
(Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (Fassi, L. El 05); Elouadrhiri, L
(Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.); Fedotov, G (Fedotov, G.);
Feldman, G (Feldman, G.); Feuerbach, RJ (Feuerbach, R. J.); Forest, TA (Forest, T. A.); Fradi, A
(Fradi, A.); Funsten, H (Funsten, H.); Gabrielyan, MY (Gabrielyan, M. Y.); Garcon, M (Garcon,
M.); Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.);
(Gohn, W.); Golovatch, E (Golovatch, E.); Gonenc, A (Gonenc, A.); Gordon, CIO (Gordon, C. I.
O.); Gothe, RW (Gothe, R. W.); Graham, L (Graham, L.); Griffioen, KA (Griffioen, K. A.);
Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.);
Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hafnaoui, K
(Hafnaoui, K.); Hakobyan, H (Hakobyan, H.); Hakobyan, RS (Hakobyan, R. S.); Hanretty, C
(Hanretty, C.); Hardie, J (Hardie, J.); Hassall, N (Hassall, N.); Heddle, D (Heddle, D.); Hersman,
FW (Hersman, F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop,
M.); Hyde, CE (Hyde, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS
Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst, H.
G.); Kalantarians, N (Kalantarians, N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J. D.);
Khandaker, M (Khandaker, M.); Kim, KY (Kim, K. Y.); Klein, A (Klein, A.); Klein, FJ (Klein,
F. J.); Klimenko, AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.);
Kramer, LH (Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE
(Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J
(Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.); Lawrence, D
(Lawrence, D.); Lee, T (Lee, T.); Li, J (Li, Ji); Lima, ACS (Lima, A. C. S.); Livingston, K
(Livingston, K.); Lu, HY (Lu, H. Y.); Lukashin, K (Lukashin, K.); MacCormick, M
(MacCormick, M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McAleer, S (McAleer,
S.); McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA (Mecking,
B. A.); Mehrabyan, S (Mehrabyan, S.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M.
V.); Morand, L (Morand, L.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Morrow, SA
(Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Mueller, J (Mueller, J.); Munevar, E
Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.);
Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); O'Rielly, GV (O'Rielly, G. V.); Osipenko,
M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, S (Park, S.); Pasyuk, E (Pasyuk,
E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Philips, SA (Philips, S. A.);
(Pogorelko, O.); Polli, E (Polli, E.); Popa, I (Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom,
BM (Preedom, B. M.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D
G.); Rossi, P (Rossi, P.); Rowntree, D (Rowntree, D.); Rubin, PD (Rubin, P. D.); Sabatie, F
(Sabatie, F.); Saini, MS (Saini, M. S.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.);
Santoro, JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.); Schott, D (Schott, D.); Schumacher,
RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D
(Sharov, D.); Shaw, J (Shaw, J.); Shvedunov, NV (Shvedunov, N. V.); Skabelin, AV (Skabelin,
A. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D
(Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S
(Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I.
I.); Strauch, S (Strauch, S.); Suleiman, R (Suleiman, R.); Taiuti, M (Taiuti, M.); Takeuchi, T
(Takeuchi, T.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S
(Tkachenko, S.); Todor, L (Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.); Vineyard, MF
(Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB
(Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yun, J (Yun, J.);
Yurov, M (Yurov, M.); Zana, L (Zana, L.); Zhang, B (Zhang, B.); Zhang, J (Zhang, J.); Zhao, B
(Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Electroexcitation of the Roper resonance for 1.7 < Q(2)< 4.5 GeV2 in ep -> en pi(+)
Abstract: The helicity amplitudes of the electroexcitation of the Roper resonance are extracted
for 1.7 < Q(2)< 4.5 GeV2 from recent high precision JLab-CLAS cross section and
longitudinally polarized beam asymmetry data for pi(+) electroproduction on protons at W=1.151.69 GeV. The analysis is made using two approaches, dispersion relations and a unitary isobar
model, which give consistent Q(2) behavior of the helicity amplitudes for the gamma(*)p ->
N(1440)P-11 transition. It is found that the transverse helicity amplitude A(1/2), which is large
and negative at Q(2)=0, becomes large and positive at Q(2)similar or equal to 2 GeV2, and then
drops slowly with Q(2). The longitudinal helicity amplitude S-1/2, which was previously found
from CLAS ep -> ep pi(0),en pi(+) data to be large and positive at Q(2)=0.4,0.65 GeV2, drops
with Q(2). Available model predictions for gamma(*)p -> N(1440)P-11 allow us to conclude that
these results provide strong evidence in favor of N(1440)P-11 as a first radial excitation of the 3q
ground state. The results of the present paper also confirm the conclusion of our previous
analysis for Q(2)< 1 GeV2 that the presentation of N(1440)P-11 as a q(3)G hybrid state is ruled
out.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.045209
Record 83 of 499
Author(s): Margaryan, A (Margaryan, A.); Hashimoto, O (Hashimoto, O.); Majewski, S
(Majewski, S.); Tang, L (Tang, L.)
Title: RF Cherenkov picosecond timing technique for high energy physics applications
Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION AACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT,
595 (1): 274-277 SEP 21 2008
Abstract: The Cherenkov time-of-propagation (TOP) detector and Cherenkov time-of-flight
(TOF) detector in a "head-on" geometry based on the recently proposed time measuring
technique with radio frequency (RF) phototube are considered. Results of the Monte Carlo
simulations are presented. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2008.07.065
Record 84 of 499
Author(s): Adzic, P (Adzic, P.); Alemany-Fernandez, R (Alemany-Fernandez, R.); Almeida, N
(Almeida, N.); Anagnostou, G (Anagnostou, G.); Andelin, D (Andelin, D.); Anfreville, M
(Anfreville, M.); Anicin, I (Anicin, I.); Antunovic, Z (Antunovic, Z.); Arcidiacono, R
(Arcidiacono, R.); Arenton, MW (Arenton, M. W.); Auffray, E (Auffray, E.); Argiro, S (Argiro,
S.); Askew, A (Askew, A.); Atramentov, O (Atramentov, O.); Baccaro, S (Baccaro, S.);
Baffioni, S (Baffioni, S.); Balazs, M (Balazs, M.); Barney, D (Barney, D.); Barone, LM (Barone,
L. M.); Bartoloni, A (Bartoloni, A.); Baty, C (Baty, C.); Bandurin, D (Bandurin, D.); Beauceron,
S (Beauceron, S.); Bell, KW (Bell, K. W.); Benetta, R (Benetta, R.); Bercher, M (Bercher, M.);
Bernet, C (Bernet, C.); Berthon, U (Berthon, U.); Besancon, M (Besancon, M.); Betev, B (Betev,
B.); Beuselinck, R (Beuselinck, R.); Biino, C (Biino, C.); Blaha, J (Blaha, J.); Bloch, P (Bloch,
P.); Blyth, S (Blyth, S.); Bornheim, A (Bornheim, A.); Bourotte, J (Bourotte, J.); Brett, AM
(Brett, A. M.); Brown, RM (Brown, R. M.); Britton, D (Britton, D.); Buehler, M (Buehler, M.);
Busson, P (Busson, P.); Camanzi, B (Camanzi, B.); Camporesi, T (Camporesi, T.); Carrera, E
(Carrera, E.); Cartiglia, N (Cartiglia, N.); Cavallari, F (Cavallari, F.); Cerutti, M (Cerutti, M.);
Chang, P (Chang, P.); Chang, YH (Chang, Y. H.); Charlot, C (Charlot, C.); Chen, EA (Chen, E.
A.); Chen, WT (Chen, W. T.); Chen, Z (Chen, Z.); Chipaux, R (Chipaux, R.); Choudhary, BC
(Choudhary, B. C.); Choudhury, RK (Choudhury, R. K.); Cockerill, DJA (Cockerill, D. J. A.);
Combaret, C (Combaret, C.); Conetti, S (Conetti, S.); Cossutti, F (Cossutti, F.); Cox, B (Cox,
B.); Cussans, DG (Cussans, D. G.); Dafinei, I (Dafinei, I.); Di Calafiori, DRD (Di Calafiori, D.
R. Da Silva); Daskalakis, G (Daskalakis, G.); Davatz, G (Davatz, G.); David, A (David, A.);
Deiters, K (Deiters, K.); Dejardin, M (Dejardin, M.); Djordjevic, M (Djordjevic, M.); Della
Negra, R (Della Negra, R.); Della Ricca, G (Della Ricca, G.); Del Re, D (Del Re, D.); De Min, A
(De Min, A.); Denegri, D (Denegri, D.); Depasse, P (Depasse, P.); Descamps, J (Descamps, J.);
Diemoz, M (Diemoz, M.); Di Marco, E (Di Marco, E.); Dissertori, G (Dissertori, G.); Dittmar, M
(Dittmar, M.); Djambazov, L (Djambazov, L.); Dobrzynski, L (Dobrzynski, L.); Drndarevic, S
(Drndarevic, S.); Duboscq, JE (Duboscq, J. E.); Dutta, D (Dutta, D.); Dzelalija, M (Dzelalija,
M.); Elliott-Peisert, A (Elliott-Peisert, A.); El Mamouni, H (El Mamouni, H.); Evangelou, I
(Evangelou, I.); Evans, DL (Evans, D. L.); Fabbro, B (Fabbro, B.); Faure, JL (Faure, J. L.); Fay,
J (Fay, J.); Ferri, F (Ferri, F.); Flower, PS (Flower, P. S.); Franci, D (Franci, D.); Franzoni, G
(Franzoni, G.); Freudenreich, K (Freudenreich, K.); Funk, W (Funk, W.); Ganjour, S (Ganjour,
S.); Gargiulo, C (Gargiulo, C.); Gascon, S (Gascon, S.); Gataullin, M (Gataullin, M.);
Geerebaert, Y (Geerebaert, Y.); Gentit, FX (Gentit, F. X.); Gershtein, Y (Gershtein, Y.); Ghezzi,
A (Ghezzi, A.); Ghodgaonkar, MD (Ghodgaonkar, M. D.); Gilly, J (Gilly, J.); Givernaud, A
(Givernaud, A.); Gninenko, S (Gninenko, S.); Go, A (Go, A.); Gobbo, B (Gobbo, B.);
Godinovic, N (Godinovic, N.); Golubev, N (Golubev, N.); Gong, D (Gong, D.); Govoni, P
(Govoni, P.); Grant, N (Grant, N.); Gras, P (Gras, P.); Greenhalgh, RJS (Greenhalgh, R. J. S.);
Riveros, LG (Riveros, L. Guevara); Guillaud, JP (Guillaud, J. P.); Haguenauer, M (Haguenauer,
M.); de Monchenault, GH (de Monchenault, G. Hamel); Hansen, M (Hansen, M.); Heath, HF
(Heath, H. F.); Heltsley, B (Heltsley, B.); Hill, JA (Hill, J. A.); Hintz, W (Hintz, W.); Hirosky, R
(Hirosky, R.); Hobson, PR (Hobson, P. R.); Honma, A (Honma, A.); Hou, GWS (Hou, G. W.
S.); Hsiung, Y (Hsiung, Y.); Husejko, M (Husejko, M.); Ille, B (Ille, B.); Imlay, R (Imlay, R.);
Ingram, Q (Ingram, Q.); Jarry, P (Jarry, P.); Jessop, C (Jessop, C.); Jovanovic, D (Jovanovic, D.);
Kaadze, K (Kaadze, K.); Kachanov, V (Kachanov, V.); Kailas, S (Kailas, S.); Kataria, SK
(Kataria, S. K.); Kennedy, BW (Kennedy, B. W.); Kloukinas, K (Kloukinas, K.); Kokkas, P
(Kokkas, P.); Kolberg, T (Kolberg, T.); Krasnikov, N (Krasnikov, N.); Krpic, D (Krpic, D.);
Kubota, Y (Kubota, Y.); Kumar, P (Kumar, P.); Kuo, CM (Kuo, C. M.); Kyberd, P (Kyberd, P.);
Kyriakis, A (Kyriakis, A.); Lebeau, M (Lebeau, M.); Lecomte, P (Lecomte, P.); Lecoq, P
(Lecoq, P.); Ledovskoy, A (Ledovskoy, A.); Leshev, G (Leshev, G.); Lethuillier, M (Lethuillier,
M.); Lin, SW (Lin, S. W.); Lin, W (Lin, W.); Lintern, AL (Lintern, A. L.); Litvine, V (Litvine,
V.); Locci, E (Locci, E.); Lodge, AB (Lodge, A. B.); Longo, E (Longo, E.); Loukas, D (Loukas,
D.); Luckey, PD (Luckey, P. D.); Lustermann, W (Lustermann, W.); Lynch, C (Lynch, C.); Ma,
Y (Ma, Y.); Mahlke-Krueger, H (Mahlke-Krueger, H.); Malberti, M (Malberti, M.); Malcles, J
(Malcles, J.); Maletic, D (Maletic, D.); Mandjavidze, I (Mandjavidze, I.); Manthos, N (Manthos,
N.); Maravin, Y (Maravin, Y.); Marchica, C (Marchica, C.); Marinelli, N (Marinelli, N.);
Markou, A (Markou, A.); Markou, C (Markou, C.); Marone, M (Marone, M.); Mathez, H
(Mathez, H.); Matveev, V (Matveev, V.); Mavrommatis, C (Mavrommatis, C.); Maurelli, G
(Maurelli, G.); Meridiani, P (Meridiani, P.); Milenovic, P (Milenovic, P.); Milleret, G (Milleret,
G.); Mine, P (Mine, P.); Mohanty, AK (Mohanty, A. K.); Moortgat, F (Moortgat, F.); Mur, M
(Mur, M.); Musella, P (Musella, P.); Musienko, Y (Musienko, Y.); Nardulli, A (Nardulli, A.);
Nash, J (Nash, J.); Nedelec, P (Nedelec, P.); Negri, P (Negri, P.); Newman, HB (Newman, H.
B.); Nikitenko, A (Nikitenko, A.); Nessi-Tedaldi, F (Nessi-Tedaldi, F.); Obertino, MM
(Obertino, M. M.); Organtini, G (Organtini, G.); Orimoto, T (Orimoto, T.); Paganoni, M
(Paganoni, M.); Paganini, P (Paganini, P.); Palma, A (Palma, A.); Panev, B (Panev, B.); Pant, L
(Pant, L.); Papadakis, A (Papadakis, A.); Papadakis, I (Papadakis, I.); Papadopoulos, I
(Papadopoulos, I.); Paramatti, R (Paramatti, R.); Parracho, P (Parracho, P.); Pastrone, N
(Pastrone, N.); Patterson, JR (Patterson, J. R.); Pauss, F (Pauss, F.); Petrakou, E (Petrakou, E.);
Phillips, DG (Phillips, D. G., II); Piroue, P (Piroue, P.); Ptochos, F (Ptochos, F.); Puljak, I
(Puljak, I.); Pullia, A (Pullia, A.); Punz, T (Punz, T.); Puzovic, J (Puzovic, J.); Ragazzi, S
(Ragazzi, S.); Rahatlou, S (Rahatlou, S.); Rander, J (Rander, J.); Razis, PA (Razis, P. A.);
Redaelli, N (Redaelli, N.); Renker, D (Renker, D.); Reucroft, S (Reucroft, S.); Reymond, JM
(Reymond, J. M.); Ribeiro, P (Ribeiro, P.); Roeser, U (Roeser, U.); Rogan, C (Rogan, C.);
Romanteau, T (Romanteau, T.); Rondeaux, F (Rondeaux, F.); Ronquest, M (Ronquest, M.);
Rosowsky, A (Rosowsky, A.); Rovelli, C (Rovelli, C.); Rumerio, P (Rumerio, P.); Rusack, R
(Rusack, R.); Rusakov, SV (Rusakov, S. V.); Ryan, MJ (Ryan, M. J.); Sala, L (Sala, L.); Salerno,
R (Salerno, R.); Santanastasio, F (Santanastasio, F.); Schinzel, D (Schinzel, D.); Seez, C (Seez,
C.); Sharp, P (Sharp, P.); Shepherd-Themistocleous, CH (Shepherd-Themistocleous, C. H.);
Siamitros, C (Siamitros, C.); Sillou, D (Sillou, D.); Singovsky, A (Singovsky, A.); Sirois, Y
(Sirois, Y.); Sirunyan, A (Sirunyan, A.); Silva, J (Silva, J.); Silva, P (Silva, P.); Shiu, JG (Shiu, J.
G.); Shivpuri, RK (Shivpuri, R. K.); Shukla, P (Shukla, P.); Smith, BJ (Smith, B. J.); Smith, VJ
(Smith, V. J.); Sproston, M (Sproston, M.); Stockli, F (Stoeckli, F.); Suter, H (Suter, H.); Swain,
J (Swain, J.); de Fatis, TT (de Fatis, T. Tabarelli); Takahashi, M (Takahashi, M.); Tancini, V
(Tancini, V.); Tcheremoukhine, A (Tcheremoukhine, A.); Teller, O (Teller, O.); Theofilatos, K
(Theofilatos, K.); Thiebaux, C (Thiebaux, C.); Timciuc, V (Timciuc, V.); Timlin, C (Timlin, C.);
Titov, M (Titov, M.); Tobias, A (Tobias, A.); Topkar, A (Topkar, A.); Triantis, FA (Triantis, F.
A.); Troshin, S (Troshin, S.); Tyurin, N (Tyurin, N.); Ueno, K (Ueno, K.); Uzunian, A (Uzunian,
A.); Varela, J (Varela, J.); Verrecchia, P (Verrecchia, P.); Veverka, J (Veverka, J.); Vichoudis, P
(Vichoudis, P.); Virdee, T (Virdee, T.); Vlassov, E (Vlassov, E.); Von Gunten, HP (Von Gunten,
H. P.); Wang, M (Wang, M.); Wardrope, D (Wardrope, D.); Weber, M (Weber, M.); Weng, J
(Weng, J.); Williams, JH (Williams, J. H.); Yang, Y (Yang, Y.); Yaselli, I (Yaselli, I.); Yohay, R
(Yohay, R.); Zabi, A (Zabi, A.); Zamiatin, N (Zamiatin, N.); Zelepoukine, S (Zelepoukine, S.);
Zhang, J (Zhang, J.); Zhang, LY (Zhang, L. Y.); Zhu, K (Zhu, K.); Zhu, RY (Zhu, R. Y.)
Group Author(s): CMS Electromagnetic Calorimeter Gr
Title: Intercalibration of the barrel electromagnetic calorimeter of the CMS experiment at startup
Source: JOURNAL OF INSTRUMENTATION, 3: Art. No. P10007 OCT 2008
Abstract: Calibration of the relative response of the individual channels of the barrel
electromagnetic calorimeter of the CMS detector was accomplished, before installation, with
cosmic ray muons and test beams. One fourth of the calorimeter was exposed to a beam of high
energy electrons and the relative calibration of the channels, the intercalibration, was found to be
reproducible to a precision of about 0.3%. Additionally, data were collected with cosmic rays for
the entire ECAL barrel during the commissioning phase. By comparing the intercalibration
constants obtained with the electron beam data with those from the cosmic ray data, it is
demonstrated that the latter provide an intercalibration precision of 1.5% over most of the barrel
ECAL. The best intercalibration precision is expected to come from the analysis of events
collected in situ during the LHC operation. Using data collected with both electrons and pion
beams, several aspects of the intercalibration procedures based on electrons or neutral pions were
investigated.
ISSN: 1748-0221
Article Number: P10007
Record 85 of 499
(Boisson, C.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J
(Brucker, J.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I (Buesching, I.);
Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P. M.);
Chaves, R (Chaves, R.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A. C.);
Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Dalton, M
(Dalton, M.); Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A
(Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, IO (Drury, I. O'C.); Dubois, F
(Fontaine, G.); Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.); Gallant,
YA (Gallant, Y. A.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B
D.); Hauser, M (Hauser, M.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.);
(Lamanna, G.); Latham, IJ (Latham, I. J.); Lemoine-Goumard, M (Lemoine-Goumard, M.);
Moulin, E (Moulin, E.); Nakajima, H (Nakajima, H.); Naumann-Godo, M (Naumann-Godo, M.);
de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nekrassov, D (Nekrassov, D.); Nolan,
SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, ED (Wilhelmi, E. de
Ona); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.);
Panter, M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO
(Petrucci, P. -O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.);
Quirrenbach, A (Quirrenbach, A.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue,
M.); Rayner, SM (Rayner, S. M.); Reimer, O (Reimer, O.); Renaud, M (Renaud, M.); Rieger, F
(Rieger, F.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell,
G (Rowell, G.); Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.);
S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Skilton, JL (Skilton, J. L.); Sol,
H (Sol, H.); Spangler, D (Spangler, D.); Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp,
R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet,
JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); Tibolla, O (Tibolla, O.); van Eldik, C (van Eldik,
C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P
Title: Discovery of a VHE gamma-ray source coincident with the supernova remnant CTB 37A
Source: ASTRONOMY & ASTROPHYSICS, 490 (2): 685-693 NOV 2008
Abstract: Aims. The supernova remnant (SNR) complex CTB 37 is an interesting candidate for
observations with very high energy (VHE) gamma-ray telescopes such as HESS. In this region,
three SNRs are seen. One of them is potentially associated with several molecular clouds, a
circumstance that can be used to probe the acceleration of hadronic cosmic rays.
Methods. This region was observed with the HESS Cherenkov telescopes and the data were
analyzed with standard HESS procedures. Recent X-ray observations with Chandra and XMMNewton were used to search for X-ray counterparts.
Results. The discovery of a new VHE gamma-ray source HESS J1714-385 coincident with the
remnant CTB 37A is reported. The energy spectrum is well described by a power-law with a
photon index of Gamma = 2.30 +/- 0.13 and a differential flux at 1 TeV of Phi(0) = (8.7 +/1.0(stat) +/- 1.8(sys)) x 10(-13) cm(-2) s(-1) TeV-1. The integrated flux above 1 TeV is
equivalent to 3% of the flux of the Crab nebula above the same energy. This VHE gamma-ray
source is a counterpart candidate for the unidentified EGRET source 3EG J1714-3857. The
observed VHE emission is consistent with the molecular gas distribution around CTB 37A; a
close match is expected in a hadronic scenario for gamma-ray production. The X-ray
observations reveal the presence of thermal X-rays from the NE part of the SNR. In the NW part
of the remnant, an extended non-thermal X-ray source, CXOU J171419.8-383023, is discovered
as well. Possible connections of the X-ray emission to the newly found VHE source are
discussed.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200809722
Record 86 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Starobinsky, AA (Starobinsky, A. A.);
Ghahramanyan, T (Ghahramanyan, T.); Kashin, AL (Kashin, A. L.); Khachatryan, HG
(Khachatryan, H. G.); Kuloghlian, H (Kuloghlian, H.); Vetrugno, D (Vetrugno, D.); Yegorian, G
(Yegorian, G.)
Title: Large scale plane-mirroring in the cosmic microwave background WMAP5 maps
Abstract: We continue investigation of the hidden plane-mirror symmetry in the distribution of
excursion sets in cosmic microwave background (CMB) temperature anisotropy maps,
previously noticed in the three-year data of the Wilkinson microwave anisotropy probe
(WMAP), using the WMAP 5 years maps. The symmetry is shown to have higher significance,
chi(2) < 1.7, for low multipoles l < 5, while disappearing at larger multipoles, chi(2) > 3.5 for l >
10. The study of the sum and difference maps of temperature inhomogeneity regions, along with
simulated maps, confirms its existence. The properties of these mirroring symmetries are
compatible with those produced by the Sachs-Wolfe effect in the presence of an anomalously
large component of horizon-size density perturbations, independent of one of the spatial
coordinates, and/or a slab-like spatial topology of the Universe.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200810747
Record 87 of 499
Author(s): Allahverdyan, AE (Allahverdyan, Armen E.)
Title: Entropy of Hidden Markov Processes via Cycle Expansion
Source: JOURNAL OF STATISTICAL PHYSICS, 133 (3): 535-564 NOV 2008
Abstract: Hidden Markov Processes (HMP) is one of the basic tools of the modern probabilistic
modeling. The characterization of their entropy remains however an open problem. Here the
entropy of HMP is calculated via the cycle expansion of the zeta-function, a method adopted
from the theory of dynamical systems. For a class of HMP this method produces exact results
both for the entropy and the moment-generating function. The latter allows to estimate, via the
Chernoff bound, the probabilities of large deviations for the HMP. More generally, the method
offers a representation of the moment-generating function and of the entropy via convergent
series.
ISSN: 0022-4715
DOI: 10.1007/s10955-008-9613-0
Record 88 of 499
Author(s): Airapetian, A (Airapetian, A.); Akopov, N (Akopov, N.); Akopov, Z (Akopov, Z.);
Andrus, A (Andrus, A.); Aschenauer, EC (Aschenauer, E. C.); Augustyniak, W (Augustyniak,
W.); Avakian, R (Avakian, R.); Avetissian, A (Avetissian, A.); Avetissian, E (Avetissian, E.);
Belostotski, S (Belostotski, S.); Bianchi, N (Bianchi, N.); Blok, HP (Blok, H. P.); Bottcher, H
(Boettcher, H.); Bonomo, C (Bonomo, C.); Borissov, A (Borissov, A.); Brull, A (Bruell, A.);
Bryzgalov, V (Bryzgalov, V.); Burns, J (Burns, J.); Capiluppi, M (Capiluppi, M.); Capitani, GP
(Capitani, G. P.); Cisbani, E (Cisbani, E.); Ciullo, G (Ciullo, G.); Contalbrigo, M (Contalbrigo,
M.); Dalpiaz, PF (Dalpiaz, P. F.); Deconinck, W (Deconinck, W.); De Leo, R (De Leo, R.);
Demey, M (Demey, M.); De Nardo, L (De Nardo, L.); De Sanctis, E (De Sanctis, E.);
Diefenthaler, M (Diefenthaler, M.); Di Nezza, P (Di Nezza, P.); Dreschler, J (Dreschler, J.);
Duren, M (Dueren, M.); Ehrenfried, M (Ehrenfried, M.); Elalaoui-Moulay, A (Elalaoui-Moulay,
A.); Elbakian, G (Elbakian, G.); Ellinghaus, F (Ellinghaus, F.); Elschenbroich, U (Elschenbroich,
U.); Fabbri, R (Fabbri, R.); Fantoni, A (Fantoni, A.); Felawka, L (Felawka, L.); Frullani, S
(Frullani, S.); Funel, A (Funel, A.); Gabbert, D (Gabbert, D.); Gapienko, G (Gapienko, G.);
Gapienko, V (Gapienko, V.); Garibaldi, F (Garibaldi, F.); Gavrilov, G (Gavrilov, G.);
Gharibyan, V (Gharibyan, V.); Giordano, F (Giordano, F.); Gliske, S (Gliske, S.); Gregor, IM
(Gregor, I. M.); Guler, H (Guler, H.); Hadjidakis, C (Hadjidakis, C.); Hasch, D (Hasch, D.);
Hasegawa, T (Hasegawa, T.); Hesselink, WHA (Hesselink, W. H. A.); Hill, G (Hill, G.);
Hillenbrand, A (Hillenbrand, A.); Hoek, M (Hoek, M.); Holler, Y (Holler, Y.); Hommez, B
(Hommez, B.); Hristova, I (Hristova, I.); Iarygin, G (Iarygin, G.); Imazu, Y (Imazu, Y.);
Ivanilov, A (Ivanilov, A.); Izotov, A (Izotov, A.); Jackson, HE (Jackson, H. E.); Jgoun, A
(Jgoun, A.); Joosten, S (Joosten, S.); Kaiser, R (Kaiser, R.); Keri, T (Keri, T.); Kinney, E
(Kinney, E.); Kisselev, A (Kisselev, A.); Kobayashi, T (Kobayashi, T.); Kopytin, M (Kopytin,
M.); Korotkov, V (Korotkov, V.); Kozlov, V (Kozlov, V.); Kravchenko, P (Kravchenko, P.);
Krivokhijine, VG (Krivokhijine, V. G.); Lagamba, L (Lagamba, L.); Lamb, R (Lamb, R.);
Lapikas, L (Lapikas, L.); Lehmann, I (Lehmann, I.); Lenisa, P (Lenisa, P.); Liebing, P (Liebing,
P.); Linden-Levy, LA (Linden-Levy, L. A.); Ruiz, AL (Ruiz, A. Lopez); Lorenzon, W
(Lorenzon, W.); Lu, S (Lu, S.); Lu, XR (Lu, X-R.); Ma, BQ (Ma, B. -Q.); Mahon, D (Mahon,
D.); Maiheu, B (Maiheu, B.); Makins, NCR (Makins, N. C. R.); Manfre, L (Manfre, L.); Mao, Y
(Mao, Y.); Marianski, B (Marianski, B.); Marukyan, H (Marukyan, H.); Mexner, V (Mexner,
V.); Miller, CA (Miller, C. A.); Miyachi, Y (Miyachi, Y.); Muccifora, V (Muccifora, V.);
Murray, M (Murray, M.); Mussgiller, A (Mussgiller, A.); Nagaitsev, A (Nagaitsev, A.); Nappi, E
(Nappi, E.); Naryshkin, Y (Naryshkin, Y.); Nass, A (Nass, A.); Negodaev, M (Negodaev, M.);
Nowak, WD (Nowak, W. -D.); Osborne, A (Osborne, A.); Pappalardo, LL (Pappalardo, L. L.);
Perez-Benito, R (Perez-Benito, R.); Pickert, N (Pickert, N.); Raithel, M (Raithel, M.); Reggiani,
D (Reggiani, D.); Reimer, PE (Reimer, P. E.); Reischl, A (Reischl, A.); Reolon, AR (Reolon, A.
R.); Riedl, C (Riedl, C.); Rith, K (Rith, K.); Rock, SE (Rock, S. E.); Rosner, G (Rosner, G.);
Rostomyan, A (Rostomyan, A.); Rubacek, L (Rubacek, L.); Rubin, J (Rubin, J.); Ryckbosch, D
(Ryckbosch, D.); Salomatin, Y (Salomatin, Y.); Sanjiev, I (Sanjiev, I.); Schaefer, A (Schaefer,
A.); Schnell, G (Schnell, G.); Schuler, KP (Schueler, K. P.); Seitz, B (Seitz, B.); Shearer, C
(Shearer, C.); Shibata, TA (Shibata, T. -A.); Shutov, V (Shutov, V.); Stancari, M (Stancari, M.);
Statera, M (Statera, M.); Steffens, E (Steffens, E.); Steijger, JJM (Steijger, J. J. M.); Stenzel, H
(Stenzel, H.); Stewart, J (Stewart, J.); Stinzing, F (Stinzing, F.); Streit, J (Streit, J.); Tait, P (Tait,
P.); Taroian, S (Taroian, S.); Tchuiko, B (Tchuiko, B.); Terkulov, A (Terkulov, A.); Trzcinski, A
(Trzcinski, A.); Tytgat, M (Tytgat, M.); Vandenbroucke, A (Vandenbroucke, A.); van der Nat,
PB (van der Nat, P. B.); van der Steenhoven, G (van der Steenhoven, G.); van Haarlem, Y (van
Haarlem, Y.); van Hulse, C (van Hulse, C.); Varanda, M (Varanda, M.); Veretennikov, D
(Veretennikov, D.); Vikhrov, V (Vikhrov, V.); Vilardi, I (Vilardi, I.); Vogel, C (Vogel, C.);
Wang, S (Wang, S.); Yaschenko, S (Yaschenko, S.); Ye, H (Ye, H.); Ye, Y (Ye, Y.); Ye, Z (Ye,
Z.); Yen, S (Yen, S.); Yu, W (Yu, W.); Zeiler, D (Zeiler, D.); Zihlmann, B (Zihlmann, B.);
Zupranski, P (Zupranski, P.)
Group Author(s): HERMES Collaboration
Title: Measurement of parton distributions of strange quarks in the nucleon from charged-kaon
production in deep-inelastic scattering on the deuteron
Source: PHYSICS LETTERS B, 666 (5): 446-450 SEP 11 2008
Abstract: The momentum and helicity density distributions of the strange quark sea in the
nucleon are obtained in leading order from charged-kaon production in deep-inelastic scattering
on the deuteron. The distributions are extracted from spin-averaged K+/- multiplicities, and from
K+/- and inclusive double-spin asymmetries for scattering of polarized positrons by a polarized
deuterium target. The shape of the momentum distribution is softer than that of the average of
the a and a quarks. In the region of measurement 0.02 < x < 0.6 and Q(2) > 1.0 GeV2, the
helicity distribution is zero within experimental uncertainties. (C) 2008 Elsevier B.V. All rights
reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.07.090
Record 89 of 499
Author(s): Khachatryan, V (Khachatryan, Vladimir)
Title: Modified Kolmogorov wave turbulence in QCD matched onto "Bottom-up" thermalization
Source: NUCLEAR PHYSICS A, 810: 109-141 SEP 15 2008
Abstract: We investigate modification of Kolmogorov wave turbulence in QCD calculating
gluon spectra as functions of time in the presence of a low energy source which feeds in energy
density in the infrared region at a time-dependent rate. Then considering the picture of saturation
constraints as has been constructed in the "bottom-up" themalization approach we revisit that
picture for RHIC center-mass energy, W = 130 GeV, and also extend it to LHC center-mass
energy, W = 5500 GeV, thus for two cases having an opportunity to calculate the equilibration
time, tau eq1/therm, of the gluon system produced in a central heavy ion collision at mid-rapidity
region. Thereby, at RHIC and LHC energies we can match the equilibration time, obtained from
the late stage gluon spectrum of the modified Kolmogorov wave turbulence, onto that of the
"bottom-up" thermalization and other evolutional approaches as well. In addition, from the
revised "bottom-up" approach we find the gluon liberation coefficient to be on the average,
epsilon similar or equal to 0.81-1.06 at RHIC and epsilon similar or equal to 0.50-0.56 at LHC.
We also present other phenomenological estimates of tau(therm) which, at QCD realistic
couplings, yield 0.45-0.65 fm <= tau(therm) <= 0.97-2.72 fm at RHIC and 0.31-0.40 fm <=
tau(therm) <= 0.86-2.04 fm at LHC. We show that the second upper-bounds Of Ttherrn in both
cases are due to the late stage gluon spectrum of the original Kolmogorov wave turbulence in
QCD, previously deduced with a low energy source which feeds in energy density at a constant
rate. On the other hand, the lower-bounds and first upper-bounds of tau(therm) are due to the late
stage gluon spectrum of the modified QCD wave turbulence, deduced here at the specific timedependent rate. In the latter case, at certain conditions, taking also into account both very small
and realistic couplings we give estimates: 0.65 fm <= T-therm <= 1.29 fm at RHIC and 0.52 fm
<= tau(therm) <= 1.16 fm at LHC, as well as at realistic couplings we find 0.53 <= tau(therm) <=
0.7 fm at RHIC and 0.41 <= tau(therm) < 0.65 fm at LHC. (C) 2008 Elsevier B.V. All rights
reserved.
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2008.06.011
Record 90 of 499
(Antoranz, P.); Armada, A (Armada, A.); Asensio, M (Asensio, M.); Baixeras, C (Baixeras, C.);
Barrio, JA (Barrio, J. A.); Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Becker, J (Becker,
J.); Bednarek, W (Bednarek, W.); Berger, K (Berger, K.); Bigongiari, C (Bigongiari, C.); Biland,
A (Biland, A.); Bock, RK (Bock, R. K.); Bordas, P (Bordas, P.); Bosch-Ramon, V (BoschRamon, V.); Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M (Camara, M.); Carmona,
E (Carmona, E.); Chilingarian, A (Chilingarian, A.); Ciprini, S (Ciprini, S.); Coarasa, JA
(Coarasa, J. A.); Commichau, S (Commichau, S.); Contreras, JL (Contreras, J. L.); Cortina, J
(Cortina, J.); Costado, MT (Costado, M. T.); Curtef, V (Curtef, V.); Danielyan, V (Danielyan,
V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C (Delgado, C.); de los
Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); Domingo-Santamaria, E (DomingoSantamaria, E.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M (Errando, M.);
Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R
(Firpo, R.); Flix, J (Flix, J.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Fuchs, M
(Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R. J.); Garczarczyk, M
(Garczarczyk, M.); Gaug, M (Gaug, M.); Giller, M (Giller, M.); Goebel, F (Goebel, F.);
Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.);
Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E (Lindfors, E.); Lombardi, S
(Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez, M (Lopez, M.); Lorenz, E
K.); Mansutti, O (Mansutti, O.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin,
D (Mazin, D.); Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.);
Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.);
Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J
(Ninkovic, J.); Ona-Wilhelmi, E (Ona-Wilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.);
(Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M
(Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Puchades, N (Puchades, N.);
Prandini, E (Prandini, E.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo,
M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.);
Saggion, A (Saggion, A.); Saito, T (Saito, T.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.);
Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T
N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.);
Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Temnikov, P
(Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Torres, DF (Torres, D.
F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Vitale, V (Vitale, V.); Wagner, RM
(Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.);
Title: FADC signal reconstruction for the MAGIC telescope
594 (3): 407-419 SEP 11 2008
Abstract: Until April 2007 the Major Atmospheric Gamma ray Imaging Cherenkov (MAGIC)
telescope used a 300 MSamples/s flash analog-to-digital converter (FADC) system to sample the
shaped photomultiplier tube (PMT) signals produced by the captured Cherenkov photons of air
showers. Different algorithms to reconstruct the signal from the read-out samples (extractors)
have been implemented and are described and compared. Criteria based on the obtained charge
and time resolution/bias are defined and used to judge the different extractors, by applying them
to calibration, cosmic and pedestal signals. The achievable charge and time resolution have been
derived as functions of the number of incident photoelectrons. (C) 2008 Elsevier B.V. All rights
reserved.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2008.06.043
Record 91 of 499
Author(s): Tamaryan, L (Tamaryan, Levon); Park, D (Park, DaeKil); Son, JW (Son, Jin-Woo);
Tamaryan, S (Tamaryan, Sayatnova)
Title: Geometric measure of entanglement and shared quantum states
Source: PHYSICAL REVIEW A, 78 (3): Art. No. 032304 SEP 2008
Abstract: We give an explicit expression for the geometric measure of entanglement for threequbit states that are linear combinations of four orthogonal product states. It turns out that the
geometric measure for these states has three different expressions depending on the range of
definition in parameter space. Each expression of the measure has its own geometrically
meaningful interpretation. Such an interpretation allows oneself to take one step toward a
complete understanding for the general properties of the entanglement measure. The states that
lie on joint surfaces separating different ranges of definition, designated as shared states, seem to
have particularly interesting features. The properties of the shared states are fully discussed.
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.78.032304
Record 92 of 499
Author(s): Derkachov, SE (Derkachov, S. E.); Karakhanyan, DR (Karakhanyan, D. R.);
Kirschner, R (Kirschner, R.); Valinevich, P (Valinevich, P.)
Title: Iterative construction of U-q(sl(n+1)) representations and Lax matrix factorisation
Source: LETTERS IN MATHEMATICAL PHYSICS, 85 (2-3): 221-234 SEP 2008
Abstract: The iterative construction of a generic representation of gl(n + 1) or of the
trigonomentric deformation of its enveloping algebra is conveniently formulated in terms of Lax
matrices. The Lax matrix of the constructed representation factorises into parts determined by
the Lax matrix of a generic representation of the algebra with reduced rank and others appearing
in the factorised expression of the Lax matrix of the special Jordan-Schwinger representation.
ISSN: 0377-9017
DOI: 10.1007/s11005-008-0268-1
Record 93 of 499
Author(s): Bellucci, S (Bellucci, Stefano); Ohanyan, V (Ohanyan, Vadim)
Title: Two-center quantum MICZ-Kepler system and the Zeeman effect in the charge-dyon
system
Source: PHYSICS LETTERS A, 372 (36): 5765-5772 SEP 1 2008
Abstract: The quantum two-center MICZ-Kepler system is considered in the limit when one of
the interaction centers is situated at infinity, which leads to homogeneous electric and magnetic
fields appearing in the system. The emerging system admits separation of variables in the
Schrodinger equation and is integrable at the classical level. The first order corrections to the
unperturbed spectrum of the ordinary MICZ-Kepler system are calculated. Particularly, the linear
Zeeman effect and effects of MICZ-terms are analyzed. The possible realizations of the system
in some quantum dots are considered. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.07.023
Record 94 of 499
Author(s): Manvelyan, R (Manvelyan, Ruben); Mkrtchyan, K (Mkrtchyan, Karapet); Ruhl, W
(Ruehl, Werner)
Title: Ultraviolet behaviour of higher spin gauge field propagators and one loop mass
renormalization
Source: NUCLEAR PHYSICS B, 803 (3): 405-427 NOV 11 2008
Abstract: The ultraviolet singular structure of the bulk-to-bulk propagators for higher spin
gauge fields in AdS(4) space is analyzed in details. Possible interactions with the Higgs scalar
and the corresponding one loop mass renormalization are studied. This mass renormalization is
finite and connected with the anomalous dimensions of those currents in the corresponding
boundary CFT3 that cease to be conserved when the interaction is switched on. In particular it is
proportional to l - 2. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2008.06.008
Record 95 of 499
Author(s): Garyaka, AP (Garyaka, A. P.); Martirosov, RM (Martirosov, R. M.); Ter-Antonyan,
SV (Ter-Antonyan, S. V.); Erlykin, AD (Erlykin, A. D.); Nikolskaya, NM (Nikolskaya, N. M.);
Gallant, YA (Gallant, Y. A.); Jones, LW (Jones, L. W.); Procureur, J (Procureur, J.)
Title: An all-particle primary energy spectrum in the 3-200 PeV energy range
Source: JOURNAL OF PHYSICS G-NUCLEAR AND PARTICLE PHYSICS, 35 (11): Art.
No. 115201 NOV 2008
Abstract: We present an all-particle primary cosmic-ray energy spectrum in the 3 x 10(6) - 2 x
10(8) GeV energy range obtained by a multi-parametric event-by-event evaluation of the
primary energy. The results are obtained on the basis of an expanded EAS data set detected at
mountain level (700 g cm(-2)) by the GAMMA experiment. The energy evaluation method has
been developed using the EAS simulation with the SIBYLL interaction model taking into
account the response of GAMMA detectors and reconstruction uncertainties of EAS parameters.
Nearly unbiased (< 5%) energy estimations regardless of a primary nuclear mass with an
accuracy of about 15-10% in the 3 x 10(6) - 2 x 10(8) GeV energy range respectively are
attained. An irregularity ('bump') in the spectrum is observed at primary energies of similar to
7.4 x 10(7) GeV. This bump exceeds a smooth power-law fit to the data by about 4 standard
deviations. By not rejecting the stochastic nature of the bump completely, we examined the
systematic uncertainties of our methods and conclude that they cannot be responsible for the
observed feature.
ISSN: 0954-3899
DOI: 10.1088/0954-3899/35/11/115201
Record 96 of 499
Author(s): Sahakyan, AA (Sahakyan, Aram A.); Nikoghosyan, SK (Nikoghosyan, Sergei K.);
Yeritsyan, HN (Yeritsyan, Hrant N.)
Title: Electron irradiation effects in doped high temperature superconductors YBa2Cu3-xMxOy
(M = Fe, Ni; x=0; x=0.01)
Source: CENTRAL EUROPEAN JOURNAL OF PHYSICS, 6 (4): 797-801 DEC 2008
Abstract: The influence of irradiation by electrons with an energy of 8 MeV, at dose intervals
between 10(13) and 2 x 10(18) el/cm(2), on the properties of impurity doped, high-temperature
superconductor YBa2Cu3-xMxOy (M = Fe, Ni; x = 0; x = 0.01) ceramics has been studied.
It has been established that, as the irradiation dose is increased, the onset temperature of the
transition to the superconducting state (T-c(on)), and the intergranular weak link coupling
temperature between granules (T-m(J)), exhibit an oscillation around their initial values of
approximately about 1-1.5 K. This oscillation indicates that the process of radiation defect
formation in HTSC occurs in multiple stages. It was also found that the critical current (J(c))
decreases with an increase of the irradiation dose, and exhibits a local minimum at a dose of 8 x
10(16) el/cm(2) coinciding with minima for T-c(on) and T-m(J) at this dose. It was found that
the introduction of Fe atoms to the ceramic decreases T-m(J), while introducing Ni atoms
decreases both T-c(on) and T-m(J); it is suggested that this is a result of Ni substitution of Cu
both in Cu2 plane sites and Cu1 chain sites. The introduction of Ni causes a large change in the
intergranular critical current density, J(c). A critical irradiation dose is obtained (2 x 10(18)) after
which all HTSC parameters strongly decrease, i. e. the superconductivity of HTSC is destroyed.
ISSN: 1895-1082
DOI: 10.2478/s11534-008-0123-0
Record 97 of 499
Author(s): Santoro, JP (Santoro, J. P.); Smith, ES (Smith, E. S.); Garcon, M (Garcon, M.);
Guidal, M (Guidal, M.); Laget, JM (Laget, J. M.); Weiss, C (Weiss, C.); Adams, G (Adams, G.);
Amaryan, MJ (Amaryan, M. J.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan, G.); Audit,
G (Audit, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie,
N.); Ball, J (Ball, J.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.);
Battaglieri, M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.);
Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS
(Biselli, A. S.); Blaszczyk, L (Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bookwalter, C
W. K.); Bueltmann, S (Bueltmann, S.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu,
C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.);
Casey, L (Casey, L.); Cazes, A (Cazes, A.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL
(Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Cords, D (Cords, D.);
Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Crede, V
(Crede, V.); Cummings, JP (Cummings, J. P.); Dale, D (Dale, D.); Dashyan, N (Dashyan, N.);
De Masi, R (De Masi, R.); De Sanctis, E (De Sanctis, E.); De Vita, R (De Vita, R.);
Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Deur, A
(Deur, A.); Dhamija, S (Dhamija, S.); Dharmawardane, KV (Dharmawardane, K. V.); Dhuga,
KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge, G.
E.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.); Dytman, S (Dytman, S.); Dzyubak, OP
(Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.);
Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.); Fedotov, G
(Fedotov, G.); Feuerbach, RJ (Feuerbach, R. J.); Ficenec, J (Ficenec, J.); Forest, TA (Forest, T.
A.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.); Gavalian, G (Gavalian, G.); Gevorgyan, N
(Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girod, FX
(Girod, F. X.); Goetz, JT (Goetz, J. T.); Gohn, W (Gohn, W.); Gordon, CIO (Gordon, C. I. O.);
Gothe, RW (Gothe, R. W.); Graham, L (Graham, L.); Griffioen, KA (Griffioen, K. A.); Guillo,
M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis,
C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hanretty, C (Hanretty,
C.); Hardie, J (Hardie, J.); Hassall, N (Hassall, N.); Heddle, D (Heddle, D.); Hersman, FW
(Hersman, F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.);
Hyde-Wright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.);
Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D
(Jenkins, D.); Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG
(Juengst, H. G.); Kalantarians, N (Kalantarians, N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J.
D.); Khandaker, M (Khandaker, M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein,
F. J.); Klimenko, V (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer,
LH (Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S.
E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.);
Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Livingston, K
(Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick, M (MacCormick, M.); Marchand, C
(Marchand, C.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McAleer, S (McAleer, S.);
A.); Mehrabyan, S (Mehrabyan, S.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M.
V.); Morand, L (Morand, L.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Morrow, SA
Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); O'Rielly, GV (O'Rielly, G. V.); Osipenko,
M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Park, S (Park, S.);
Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Philips,
SA (Philips, S. A.); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.);
Pogorelko, O (Pogorelko, O.); Popa, I (Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM
(Preedom, B. M.); Price, JW (Price, J. W.); Procureur, S (Procureur, S.); Prok, Y (Prok, Y.);
Protopopescu, D (Protopopescu, D.); Qin, LM (Qin, L. M.); Raue, BA (Raue, B. A.); Riccardi, G
(Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.);
Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Sabatie, F (Sabatie, F.); Saini, MS (Saini, M. S.);
Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.); Sapunenko, V (Sapunenko, V.); Schott,
D (Schott, D.); Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian, YG
(Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov, N. V.); Skabelin, AV
(Skabelin, A. V.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.);
Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.);
Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S
(Strauch, S.); TaiUti, M (TaiUti, M.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze,
A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro,
M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.);
Weinstein, LB (Weinstein, L. B.); Weygand, DP (Weygand, D. P.); Williams, M (Williams, M.);
Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yurov,
M (Yurov, M.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao,
Z. W.)
Title: Electroproduction of phi(1020) mesons at 1.4 <= Q(2) <= 3.8 GeV2 measured with the
CLAS spectrometer
Source: PHYSICAL REVIEW C, 78 (2): Art. No. 025210 AUG 2008
Abstract: Electroproduction of exclusive phi vector mesons has been studied with the CLAS
detector in the kinematic range 1.4 <= Q(2) <= 3.8 GeV2, 0.0 <= t' <= 3.6 GeV2, and 2.0 <= W
<= 3.0 GeV. The scaling exponent for the total cross section as 1/(Q(2) + M-phi(2))(n) was
determined to be n = 2.49 +/- 0.33. The slope of the four-momentum transfer t' distribution is
b(phi) = 0.98 +/- 0.17 GeV-2. Under the assumption of s-channel helicity conservation, we
determine the ratio of longitudinal to transverse cross sections to be R = 0.86 +/- 0.24. A twogluon exchange model is able to reproduce the main features of the data.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.025210
Record 98 of 499
Author(s): Ivanyan, M (Ivanyan, M.); Laziev, E (Laziev, E.); Tsakanov, V (Tsakanov, V.);
Vardanyan, A (Vardanyan, A.); Heifets, S (Heifets, S.); Tsakanian, A (Tsakanian, A.)
Title: Multilayer tube impedance and external radiation
Source: PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 11 (8):
Art. No. 084001 AUG 2008
Abstract: The paper describes a method for calculating the longitudinal and transverse
impedances of the laminated round pipe with many layers of different materials. The charge is
moving along the pipe axis with arbitrary constant velocity. The study is based on the fieldmatching technique applied for the arbitrary harmonic of the electromagnetic field. The matrix
formalism has been developed to describe the field transitions through the subsequent layers that
allow coupling the electromagnetic fields inside and outside the pipe. The number of equations
to be solved is then reduced to four algebraic equations. The solutions and ultrarelativistic limits
for the field harmonics in the inner and outer regions of the pipe are derived.
ISSN: 1098-4402
DOI: 10.1103/PhysRevSTAB.11.084001
Record 99 of 499
Author(s): Ananikian, N (Ananikian, N.); Ananikyan, L (Ananikyan, L.); Artuso, R (Artuso,
R.); Sargsyan, K (Sargsyan, K.)
Title: The partition function zeros for a Potts model of helix-coil transition with three-site
interactions
Source: PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS, 387 (22):
5433-5439 SEP 15 2008
Abstract: The partition function (Fisher) zeros of the Q-state Potts model with three-site
interactions on a zigzag ladder are studied by a transfer-matrix approach. This Q-state model is
proposed as a description of helix-coil transition in homopolymers. The Fisher zeros are exactly
derived for arbitrary value of the system parameter Q. It is shown that there is only a quasi-phase
transition for all temperatures. The dependence of the helix-coil transition on solvent is analyzed
using Fisher zeros of the model. The densities of the Fisher zeros are singular at the edge
singularity points and the critical exponent sigma = -1/2. (C) 2008 Elsevier B.V. All rights
reserved.
ISSN: 0378-4371
DOI: 10.1016/j.physa.2008.05.020
Record 100 of 499
(Antoranz, P.); Backes, M (Backes, M.); Baixeras, C (Baixeras, C.); Barrio, JA (Barrio, J. A.);
Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Becker, JK (Becker, J. K.); Bednarek, W
(Bednarek, W.); Berger, K (Berger, K.); Bigongiari, C (Bigongiari, C.); Biland, A (Biland, A.);
Bock, RK (Bock, R. K.); Bonnoli, G (Bonnoli, G.); Bordas, P (Bordas, P.); Bosch-Ramon, V
(Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M (Camara, M.);
Carmona, E (Carmona, E.); Chilingarian, A (Chilingarian, A.); Commichau, S (Commichau, S.);
Contreras, JL (Contreras, J. L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.); Curtef, V
(Curtef, V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); de los Reyes, R (de los
Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De Sabata, F (De Sabata,
F.); Mendez, CD (Mendez, C. Delgado); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando,
M (Errando, M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez,
E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Galante, N (Galante,
N.); Lopez, RJG (Lopez, R. J. Garcia); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.);
Goebel, F (Goebel, F.); Hayashida, M (Hayashida, M.); Herrero, A (Herrero, A.); Hohne, D
(Hoehne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Huber, S (Huber, S.); Jogler, T (Jogler,
T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.); Laille, A (Laille, A.); Leonardo, E
(Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Mariotti, M
(Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C (Merck, C.);
(Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.); Moles, M (Moles, M.); Moralejo, A (Moralejo,
A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E
(Ona-Wilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Panniello, M (Panniello, M.); Paoletti, R
(Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen, M.); Pascoli, D (Pascoli, D.);
Pauss, F (Pauss, F.); Pegna, RG (Pegna, R. G.); Perez-Torres, MA (Perez-Torres, M. A.); Persic,
M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prada, F (Prada, F.);
Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.); Sanchez, A
(Sanchez, A.); Sanchez-Conde, MA (Sanchez-Conde, M. A.); Sartori, P (Sartori, P.); Scalzotto,
V (Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer,
N (Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Spanier, F
(Spanier, F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.);
Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Torres, DF
(Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A (Venturini, A.);
Vitale, V (Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zandanel, F
(Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.); Guerrero, MA (Guerrero, M. A.);
Alberdi, A (Alberdi, A.); Paragi, Z (Paragi, Z.); Muxlow, TWB (Muxlow, T. W. B.); Diamond, P
(Diamond, P.)
Title: Multiwavelength (Radio, X-ray, and gamma-ray) observations of the gamma-ray binary
LS I +61 303
Source: ASTROPHYSICAL JOURNAL, 684 (2): 1351-1358 SEP 10 2008
Abstract: We present the results of the first multiwavelength observing campaign on the highmass X-ray binary LS I + 61 303, comprising observations at the TeV regime with the MAGIC
telescope, along with X-ray observations with Chandra, and radio interferometric observations
with the MERLIN, EVN, and VLBA arrays, in 2006 October and November. From our
MERLIN observations, we can exclude the existence of large-scale (similar to 100 mas)
persistent radio jets. Our 5.0 GHz VLBA observations display morphological similarities to
previous 8.4 GHz VLBA observations carried out at the same orbital phase, suggesting a high
level of periodicity and stability in the processes behind the radio emission. This makes it
unlikely that variability of the radio emission is due to the interaction of an outflow with variable
wind clumps. If the radio emission is produced by a milliarcsecond scale jet, it should also show
a stable, periodic behavior. It is then difficult to reconcile the absence of a large-scale jet (similar
to 100 mas) in our observations with the evidence of a persistent relativistic jet reported
previously. We find a possible hint of temporal correlation between the X-ray and TeV
emissions and evidence for radio/TeV noncorrelation, which points to the existence of one
population of particles producing the radio emission and a different one producing the X-ray and
TeV emissions. Finally, we present a quasi-simultaneous energy spectrum including radio, Xray, and TeV bands.
ISSN: 0004-637X
Record 101 of 499
W.); Beckingham, M (Beckingham, M.); Begzsuren, K (Begzsuren, K.); Behnke, O (Behnke,
C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knutsson, K (Knutsson, K.); Kogler,
A.); Kruger, K (Krueger, K.); Kutak, K (Kutak, K.); Landon, MPJ (Landon, M. P. J.); Langen,
W (Langen, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock, P.);
Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann, V.);
Levonian, S (Levonian, S.); Li, G (Li, G.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B
(List, B.); List, J (List, J.); Loktionova, N (Loktionova, N.); Lopez-Fernandez, R (LopezFernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A. -I.); Lytkin,
L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P
(Marage, P.); Marti, L (Marti, Ll.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.);
Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.);
Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.);
Milcewicz-Mika, I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.);
Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Mudrinic, M (Mudrinic, M.); Muller, K
(Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov, K.); Naroska, B (Naroska, B.);
Naumann, T (Naumann, Th.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.);
Nikiforov, A (Nikiforov, A.); Nowak, G (Nowak, G.); Nowak, K (Nowak, K.); Nozicka, M
(Nozicka, M.); Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.); Osman, S (Osman, S.);
Ozerov, D (Ozerov, D.); Palichik, V (Palichik, V.); Panagoulias, I (Panagoulias, I.); Pandurovic,
M (Pandurovic, M.); Papadopoulou, T (Papadopoulou, Th.); Pascaud, C (Pascaud, C.); Patel, GD
(Patel, G. D.); Pejchal, O (Pejchal, O.); Peng, H (Peng, H.); Perez, E (Perez, E.); Petrukhin, A
(Petrukhin, A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R
(Placakyte, R.); Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Radescu, V
(Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Raspiareza, A
(Raspiareza, A.); Ravdandorj, T (Ravdandorj, T.); Reimer, P (Reimer, P.); Rizvi, E (Rizvi, E.);
Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen, R.); Rostovtsev, A
(Rostovtsev, A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Tabasco, J. E. Ruiz); Rurikova, Z
(Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D (Salek, D.); Salvaire, F (Salvaire, F.);
Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S
(Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoffel, L (Schoeffel, L.);
Schoening, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F
(Sefkow, F.); Shaw-West, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN
(Shtarkov, L. N.); Shushkevich, S (Shushkevich, S.); Sloan, T (Sloan, T.); Smijanic, I (Smijanic,
I.); Smirnov, P (Smirnov, P.); Soloviev, Y (Soloviev, Y.); Sopicki, P (Sopicki, P.); South, D
(South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka, A.); Staykova, Z (Staykova, Z.);
Steder, M (Steder, M.); Stella, B (Stella, B.); Straumann, U (Straumann, U.); Sunar, D (Sunar,
D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov, V.); Thompson, G (Thompson, G.);
Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F (Tomasz, F.); Tran, TH (Tran,
T. H.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I
(Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.);
Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Valkarova, A (Valkarova, A.);
Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.);
Wegener, D (Wegener, D.); Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.); Wunsch, E
(Wuensch, E.); Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang,
Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.);
Zimmermann, T (Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Group Author(s): H1Collaboration
Title: Search for excited electrons in ep collisions at HERA
Source: PHYSICS LETTERS B, 666 (2): 131-139 AUG 14 2008
Abstract: A search for excited electrons is performed using the full e(+/-) p data sample
collected by the HI experiment at HERA, corresponding to a total luminosity of 475 pb(-1). The
electroweak decays of excited electrons e* -> e gamma, e* -> eZ and e* -> vW with subsequent
hadronic or leptonic decays of the W and Z bosons are considered. No evidence for excited
electron production is found. Mass dependent exclusion limits on e* production cross sections
and on the ratio f/Lambda of the coupling to the compositeness scale are derived within gauge
mediated models. These limits extend the excluded region compared to previous excited electron
searches. The e* production via contact interactions is also addressed for the first time in ep
collisions. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.07.014
Record 102 of 499
Author(s): Grigoryan, L (Grigoryan, L.)
Title: The strange-sea quark spin distribution in the nucleon from inclusive and semi-inclusive
deep-inelastic scattering
Source: PHYSICS LETTERS B, 666 (2): 173-175 AUG 14 2008
Abstract: We propose new method which allows determination of the strange-sea quark spin
distribution in the nucleon through measurement of various inclusive and semi-inclusive
polarized deep inelastic electron-proton or muon-proton reactions. It is shown, that using
combinations of inclusive data and semi-inclusive data containing neutral pions in the final state,
it is possible to extract the strange-sea quark spin distribution. Similar result can be obtained for
charged pions and some other hadrons also. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.07.012
Record 103 of 499
Author(s): Jung, E (Jung, Eylee); Hwang, MR (Hwang, Mi-Ra); Park, D (Park, DaeKil); Son,
JW (Son, Jin-Woo); Tamaryan, S (Tamaryan, Sayatnova)
Title: Mixed-state entanglement and quantum teleportation through noisy channels
Source: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 41 (38): Art.
No. 385302 SEP 26 2008
Abstract: The quantum teleportation with a noisy EPR state is discussed. Using an optimal
decomposition technique, we compute the concurrence, entanglement of formation and
Groverian measure for various noisy EPR resources. It is shown analytically that all
entanglement measures reduce to zero when (F) over bar <= 2/3, where (F) over bar is an
average fidelity between Alice and Bob. This fact indicates that the entanglement is a genuine
physical resource for the teleportation process. This fact gives valuable clues to the optimal
decomposition for higher-qubit mixed states. As an example, the optimal decompositions for the
3-qubit mixed states are discussed by adopting a teleportation with a W-state.
ISSN: 1751-8113
DOI: 10.1088/1751-8113/41/38/385302
Record 104 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); De
Almeida, UB (De Almeida, U. Barres); Bazer-Bachi, AR (Bazer-Bachi, A. R.); Behera, B
(Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Berge, D (Berge, D.);
Bernloehr, K (Bernloehr, K.); Boisson, C (Boisson, C.); Bolz, O (Bolz, O.); Borrel, V (Borrel,
V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brucker, J (Brucker, J.); Buehler, R (Buehler, R.);
Bulik, T (Bulik, T.); Buesching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S
(Carrigan, S.); Chadwick, PM (Chadwick, P. M.); Chounet, LM (Chounet, L. -M.); Clapson, AC
(Clapson, A. C.); Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante,
L.); Dalton, M (Dalton, M.); Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.);
Djannati-Atai, A (Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L.
O'C.); Dubois, F (Dubois, F.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Egberts, K (Egberts,
K.); Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier, C (Farnier,
C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Foerster, A (Foerster, A.); Fontaine, G
(Fontaine, G.); Fuessling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B (Giebels,
B.); Glicenstein, JF (Glicenstein, J. F.); Glueck, B (Glueck, B.); Goret, P (Goret, P.);
Hadjichristidis, C (Hadjichristidis, C.); Hauser, D (Hauser, D.); Hauser, M (Hauser, M.);
JA (Hinton, J. A.); Hofmann, A (Hofmann, A.); Hofmann, W (Hofmann, W.); Holleran, M
Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B (Khelifi, B.);
(Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, E (Wilhelmi, E.); Orford, KJ (Orford, K. J.);
Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.); Pedaletti, G
(Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P. -O.); Pita, S (Pita, S.);
Puehlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A (Quirrenbach, A.);
Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.);
Renaud, M (Renaud, M.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees,
S.); Rowell, G (Rowell, G.); Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V
(Sahakian, V.); Santangelo, A (Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schoeck, FM
(Schoeck, F. M.); Schroeder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S
(Schwarzburg, S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.);
-P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P (Vincent, P.); Vivier, M (Vivier, M.);
Voelk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward,
Title: HESS upper limits for Kepler's supernova remnant
Source: ASTRONOMY & ASTROPHYSICS, 488 (1): 219-223 SEP 2008
Abstract: Aims. Observations of Kepler's supernova remnant (G4.5+6.8) with the HESS
telescope array in 2004 and 2005 with a total live time of 13 h are presented.
Methods. Stereoscopic imaging of Cherenkov radiation from extensive air showers is used to
reconstruct the energy and direction of the incident gamma rays.
Results. No evidence for a very high energy (VHE: > 100 GeV) gamma-ray signal from the
direction of the remnant is found. An upper limit (99% confidence level) on the energy flux in
the range 230 GeV-12.8 TeV of 8.6 x 10(-13) erg cm(-2) s(-1) is obtained.
Conclusions. In the context of an existing theoretical model for the remnant, the lack of a
detectable gamma-ray flux implies a distance of at least 6.4 kpc. A corresponding upper limit for
the density of the ambient matter of 0.7 cm(-3) is derived. With this distance limit, and assuming
a spectral index Gamma = 2, the total energy in accelerated protons is limited to E-p < 8.6 x
10(49) erg. In the synchrotron/inverse Compton framework, extrapolating the power law
measured by RXTE between 10 and 20 keV down in energy, the predicted gamma-ray flux from
inverse Compton scattering is below the measured upper limit for magnetic field values greater
than 52 mu G.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200809401
Record 105 of 499
Author(s): Wood, MH (Wood, M. H.); Nasseripour, R (Nasseripour, R.); Weygand, DP
(Weygand, D. P.); Djalali, C (Djalali, C.); Tur, C (Tur, C.); Mosel, U (Mosel, U.); Muehlich, P
(Muehlich, P.); Adams, G (Adams, G.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P
Blaszczyk, L (Blaszczyk, L.); Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.);
WK (Brooks, W. K.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu, C.); Calarco, JR
(Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Carnahan, B
(Carnahan, B.); Casey, L (Casey, L.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole,
P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Crabb, D (Crabb, D.); Crannell, H
(Crannell, H.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dashyan, N (Dashyan,
N.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P.
V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Deur, A (Deur, A.); Dharmawardane, KV
(Dharmawardane, K. V.); Dickson, R (Dickson, R.); Dodge, GE (Dodge, G. E.); Doughty, D
(Doughty, D.); Dugger, M (Dugger, M.); Dytman, S (Dytman, S.); Dzyubak, OP (Dzyubak, O.
P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L
(Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fedotov, G (Fedotov, G.); Feldman, G (Feldman,
G.); Feuerbach, RJ (Feuerbach, R. J.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.); On, MG
(On, M. Garc); Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL
(Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gordon, CIO (Gordon, C.
I. O.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.); Guidal, M (Guidal, M.);
Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis,
C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hakobyan, RS (Hakobyan, R. S.);
Hanretty, C (Hanretty, C.); Hardie, J (Hardie, J.); Hassall, N (Hassall, N.); Hersman, FW
(Juengst, H. G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M
(Khandaker, M.); Khetarpal, P (Khetarpal, P.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein,
FJ (Klein, F. J.); Klimenko, AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn,
Z.); Kramer, LH (Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn,
SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget,
J. M.); Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Livingston,
K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick, M (MacCormick, M.); Markov, N
(Markov, N.); Mattione, P (Mattione, P.); McAleer, S (McAleer, S.); McKinnon, B (McKinnon,
B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mehrabyan, S
(Mehrabyan, S.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M. D.); Meyer, CA
(Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart, R.);
Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Moriya, K
(Nadel-Turonski, P.); Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I
(Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.); Niyazov,
RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.); Ostrovidov, AI
(Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.);
Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D
(Pocanic, D.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM
(Preedom, B. M.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu,
D.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M
(Ripani, M.); Ritchie, BG (Ritchie, B. G.); Ronchetti, F (Ronchetti, F.); Rosner, G (Rosner, G.);
Rossi, P (Rossi, P.); Sabatie, F (Sabatie, F.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado,
C.); Santoro, JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.); Schumacher, RA (Schumacher,
R. A.); Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.);
DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, S
(Stepanyan, S.); Stepanyan, SS (Stepanyan, S. S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L
(Todor, L.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov,
A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.); Williams, M (Williams, M.);
Wolin, E (Wolin, E.); Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, B (Zhang,
B.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Light vector mesons in the nuclear medium
Source: PHYSICAL REVIEW C, 78 (1): Art. No. 015201 JUL 2008
Abstract: The light vector mesons (rho,omega, and phi) were produced in deuterium, carbon,
titanium, and iron targets in a search for possible in-medium modifications to the properties of
the rho meson at normal nuclear densities and zero temperature. The vector mesons were
detected with the CEBAF Large Acceptance Spectrometer (CLAS) via their decays to e(+)e(-).
The rare leptonic decay was chosen to reduce final-state interactions. A combinatorial
background was subtracted from the invariant mass spectra using a well-established eventmixing technique. The rho-meson mass spectrum was extracted after the omega and phi signals
were removed in a nearly model-independent way. Comparisons were made between the rho
mass spectra from the heavy targets (A > 2) with the mass spectrum extracted from the
deuterium target. With respect to the rho-meson mass, we obtain a small shift compatible with
zero. Also, we measure widths consistent with standard nuclear many-body effects such as
collisional broadening and Fermi motion.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.015201
Record 106 of 499
Author(s): Bosted, PE (Bosted, P. E.); Fersch, R (Fersch, R.); Adams, G (Adams, G.); Amarian,
M (Amarian, M.); Anefalos, S (Anefalos, S.); Anghinolfi, M (Anghinolfi, M.); Asryan, G
(Asryan, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie,
N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Batourine, V
(Batourine, V.); Battaglieri, M (Battaglieri, M.); Beard, K (Beard, K.); Bedlinskiy, I (Bedlinskiy,
I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.);
Biselli, AS (Biselli, A. S.); Bonner, BE (Bonner, B. E.); Bouchigny, S (Bouchigny, S.);
Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.); Branford, D (Branford, D.); Brooks,
WK (Brooks, W. K.); Ultmann, SBR (Ultmann, S. B. R.); Burkert, VD (Burkert, V. D.);
Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.);
Carman, DS (Carman, D. S.); Carnahan, B (Carnahan, B.); Cazes, A (Cazes, A.); Chen, S (Chen,
S.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Cords, D (Cords,
D.); Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Crede, V
(Crede, V.); Cummings, JP (Cummings, J. P.); De Masi, R (De Masi, R.); De Vita, R (De Vita,
R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli,
H.); Dennis, L (Dennis, L.); Deur, A (Deur, A.); Djalali, C (Djalali, C.); Dodge, GE (Dodge, G.
E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dragovitsch, P (Dragovitsch, P.);
Dugger, M (Dugger, M.); Dharmawardane, KV (Dharmawardane, K. V.); Dytman, S (Dytman,
S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.);
Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.); Fedotov, G
(Fedotov, G.); Feuerbach, RJ (Feuerbach, R. J.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.);
Funsten, H (Funsten, H.); Garcon, M (Garcon, M.); Gavalian, G (Gavalian, G.); Gilfoyle, GP
(Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz,
J. T.); Golovatch, E (Golovatch, E.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K.
A.); Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.);
Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan,
RS (Hakobyan, R. S.); Hardie, J (Hardie, J.); Heddle, D (Heddle, D.); Hersman, FW (Hersman,
F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Huertas, M
(Huertas, M.); Hyde-Wright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG
(Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M.
M.); Jenkins, D (Jenkins, D.); Jo, HS (Jo, H. S.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.);
Kalantarians, N (Kalantarians, N.); Keith, C (Keith, C.); Kellie, JD (Kellie, J. D.); Khandaker, M
(Khandaker, M.); Kim, KY (Kim, K. Y.); Kim, K (Kim, K.); Kim, W (Kim, W.); Klein, A
(Klein, A.); Klein, FJ (Klein, F. J.); Klusman, M (Klusman, M.); Kossov, M (Kossov, M.);
(Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J.
M.); Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Lima, ACS
(Lima, A. C. S.); Livingston, K (Livingston, K.); Lu, H (Lu, H.); Lukashin, K (Lukashin, K.);
MacCormick, M (MacCormick, M.); Markov, N (Markov, N.); McAleer, S (McAleer, S.);
A.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.);
Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.);
Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Morand, L (Morand, L.); Morrow, SA
(Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Mueller, J (Mueller, J.); Mutchler, GS
(Paterson, C.); Philips, SA (Philips, S. A.); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.);
Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Polli, E (Polli, E.); Pozdniakov, S
(Pozdniakov, S.); Preedom, BM (Preedom, B. M.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.);
(Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Rosner, G (Rosner, G.); Rossi, P
(Rossi, P.); Rowntree, D (Rowntree, D.); Rubin, PD (Rubin, P. D.); Sabatie, F (Sabatie, F.);
Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y.
G.); Shaw, J (Shaw, J.); Shvedunov, NV (Shvedunov, N. V.); Skabelin, AV (Skabelin, A. V.);
Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Stavinsky, A
(Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE
(Stokes, B. E.); Stoler, P (Stoler, P.); Strauch, S (Strauch, S.); Suleiman, R (Suleiman, R.);
Taiuti, M (Taiuti, M.); Taylor, S (Taylor, S.); Tedeschi, DJ (Tedeschi, D. J.); Thoma, U (Thoma,
U.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.);
Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.);
Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yun, J
(Yun, J.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, Z (Zhao, Z.)
Title: Ratios of N-15/C-12 and He-4/C-12 inclusive electroproduction cross sections in the
nucleon resonance region
Abstract: The (W, Q(2)) dependence of the ratio of inclusive electron scattering cross sections
for N-15/C-12 was determined in the kinematic ranges 0.8 < W < 2 GeV and 0.2 < Q(2)< 1
GeV2 using 2.285 GeV electrons and the CLAS detector at Jefferson Lab. The ratios exhibit
only slight resonance structure, in agreement with a simple phenomenological model and an
extrapolation of deep-inelastic scattering ratios to low Q(2). Ratios of He-4/C-12 using 1.6 to 2.5
GeV electrons were measured with very high statistical precision and were used to correct for He
in the N and C targets. The (W, Q(2)) dependence of the He-4/C-12 ratios is in good agreement
with that of the phenomenological model and exhibit significant resonance structure centered at
W = 0.94,1.23, and 1.5 GeV.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.78.015202
Record 107 of 499
Author(s): Hakobyan, H (Hakobyan, H.); Brooks, WK (Brooks, W. K.); Bruhwel, K (Bruhwel,
K.); Burkert, VD (Burkert, V. D.); Carstens, T (Carstens, T.); Christo, S (Christo, S.); Egiyan, H
(Egiyan, H.); Gevorgyan, N (Gevorgyan, N.); Gram, J (Gram, J.); Hafidi, K (Hafidi, K.);
Hemler, P (Hemler, P.); Insley, D (Insley, D.); Jacobs, G (Jacobs, G.); Kashy, D (Kashy, D.);
Mecking, BA (Mecking, B. A.); Sharabian, Y (Sharabian, Y.); Stepanyan, S (Stepanyan, S.);
Tilles, D (Tilles, D.); Weinstein, L (Weinstein, L.); Zheng, X (Zheng, X.)
Title: A double-target system for precision measurements of nuclear medium effects
592 (3): 218-223 JUL 21 2008
Abstract: A double-target system has been developed for precision measurements of nuclear
medium effects in unpolarized electron scattering with 4-5 GeV electron beams. This system
allows for a precise comparison of elementary targets such as deuterium and hydrogen to heavy
solid targets to study subtle medium effects such as color transparency, transverse momentum
broadening, and hadron attenuation. One cryo-target and one solid target were located in the
beam simultaneously, separated by 4 cm to minimize acceptance correction differences in the
large CLAS spectrometer while maintaining the ability to identify the target event-by-event.
Because both targets were positioned in the beam simultaneously, time-dependent systematic
effects such as drifting gains or inefficient detector channels cancel in ratios of observables,
increasing the precision of the final results. Measurements were performed with hydrogen and
deuterium in combination with 3 mm diameter targets of carbon, aluminum, iron, tin, and lead.
The solid targets and deuterium target were comparable in thicknesses except for specialized
diagnostic runs with ultra-thin aluminum. Switching of the solid targets was performed remotely
and required only a few seconds to complete. An ultra-low mass vacuum chamber made from
Rohacell(C) foam provided vacuum isolation of the cryotarget without adding significantly to
multiple scattering of final-state particles. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2008.04.055
Record 108 of 499
C.); Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Dalton,
M (Dalton, M.); Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A
(Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F
(Fontaine, G.); Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gabici, S (Gabici, S.); Gallant,
YA (Gallant, Y. A.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B
D.); Hauser, M (Hauser, M.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.);
(Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, ED (Wilhelmi, E. de Ona); Orford, KJ (Orford, K.
J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.);
(Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Quirrenbach, A (Quirrenbach,
A.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM (Rayner, S.
M.); Renaud, M (Renaud, M.); Rieger, F (Rieger, F.); Reimer, O (Reimer, O.); Ripken, J
(Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Rudak,
B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo,
A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R (Schroeder,
R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg, S.); Schwemmer, S
(Schwemmer, S.); Shalchi, A (Shalchi, A.); Skilton, JL (Skilton, J. L.); Sol, H (Sol, H.);
-P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Volk, HJ (Voelk, H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.);
Zdziarski, AA (Zdziarski, A. A.); Zech, A (Zech, A.)
Title: Chandra and HESS observations of the supernova remnant CTB 37B
Source: ASTRONOMY & ASTROPHYSICS, 486 (3): 829-836 AUG 2008
Abstract: We discovered the > 100 GeV gamma-ray source, HESS J1713-381, apparently
associated with the shell-type supernova remnant (SNR) CTB37B, using HESS in 2006. In 2007
we performed X-ray follow-up observations with Chandra with the aim of identifying a
synchrotron counterpart to the TeV source and/or thermal emission from the SNR shell. These
new Chandra data, together with additional TeV data, allow us to investigate the nature of this
object in much greater detail than was previously possible. The new X-ray data reveal thermal
emission from a similar to 4' region in close proximity to the radio shell of CTB37B. The
temperature of this emission implies an age for the remnant of similar to 5000 years and an
ambient gas density of similar to 0.5 cm(-3). Both these estimates are considerably uncertain due
to the asymmetry of the SNR and possible modifications of the kinematics due to efficient
cosmic ray (CR) acceleration. A bright (approximate to 7 x 10(-13) erg cm(-2) s(-1)) and
unresolved (< 1 '') source (CXOUJ171405.7-381031), with a soft (Gamma approximate to 3.3)
non-thermal spectrum is also detected in coincidence with the radio shell. Absorption indicates a
column density consistent with the thermal emission from the shell, suggesting a genuine
association rather than a chance alignment. The observed TeV morphology is consistent with an
origin in the complete shell of CTB37B. The lack of diffuse non-thermal X-ray emission
suggests an origin of the.-ray emission via the decay of neutral pions produced in interactions of
protons and nuclei, rather than inverse Compton (IC) emission from relativistic electrons.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200809655
Record 109 of 499
Author(s): Cuesta, HJM (Cuesta, H. J. Mosquera); Turcati, R (Turcati, R.); Furlanetto, C
(Furlanetto, C.); Khachatryan, HG (Khachatryan, H. G.); Mirzoyan, S (Mirzoyan, S.); Yegorian,
G (Yegorian, G.)
Title: Hubble diagram of gamma-ray bursts calibrated with Gurzadyan-Xue cosmology
Abstract: Context. Because gamma-ray bursts (GRBs) are the most luminous among known
cosmic objects, they carry an essential potential for cosmological studies if properly used as
standard candles.
Aims. We used GRBs to test the cosmological predictions of the Gurzadyan-Xue (GX) model of
dark energy, a novel theory that predicts, without any free parameters, the current vacuum
fluctuation energy density close to the value inferred from the SNIa observations. We also
compared the GX results with those predicted by the concordance scenario Lambda-CDM.
Methods. After a consistent calibration for a specific model, using the several empirical relations
obtained from GRBs observables enables one to probe current cosmological models. Based on
this recently introduced method, we used several samples from different sources that fit our
needs, including 69 GRBs, the recently released SWIFT satellite data, and 41 GRBs that have
firmly determined redshifts. These data samples span a distance scale up to redshift about 7.
Results. We show that the GX models are compatible with the Hubble diagram of the 69 GRBs
sample. Such an adjustment is almost identical to the one for the concordance Lambda-CDM.
From this particular analysis, we can obtain the corresponding values of the matter density
parameter Omega(m) describing GX models. When the same procedure is applied to the SWIFT
satellite data, we verify that the SWIFT sample does not delineate a Hubble diagram as clearly as
featured by the 69 GRBs sample.
Conclusions. The analysis of these 3 samples shows that more data and effort are needed to
elucidate both issues: the gamma-ray bursts/standard-candle and the lack of a theoretical
understanding of the physics that may explain the empirical relations.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078243
Record 110 of 499
W.); Beckingharn, M (Beckingharn, M.); Begzsuren, K (Begzsuren, K.); Behnke, O (Behnke,
Jemanov, V (Jemanov, V.); Jonsson, L (Joensson, L.); Johnson, DP (Johnson, D. P.); Jung, AW
C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Kogler,
A.); Kruger, K (Krueger, K.); Kutak, K (Kutak, K.); Landon, MPJ (Landon, M. P. J.); Lange, W
(Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock, P.); Lebedev,
S (Levonian, S.); Li, G (Li, G.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.);
Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.);
Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.); Marti,
L (Marti, Ll.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta,
A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer,
H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika,
I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris,
Pejchal, O (Pejchal, O.); Peng, H (Peng, H.); Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.);
Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.);
Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Radescu, V (Radescu, V.);
Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Raspiareza, A (Raspiareza, A.);
Ravdandorj, T (Ravdandorj, T.); Reimer, P (Reimer, P.); Rizvi, E (Rizvi, E.); Robmann, P
A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Tabasco, J. E. Ruiz); Rurikova, Z (Rurikova, Z.);
Rusakov, S (Rusakov, S.); Salek, D (Salek, D.); Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey,
D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S
(Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening,
S (Shushkevich, S.); Sloan, T (Sloan, T.); Smijanic, I (Smijanic, I.); Smirnov, P (Smirnov, P.);
Soloviev, Y (Soloviev, Y.); Sopicki, P (Sopicki, P.); South, D (South, D.); Spaskov, V (Spaskov,
V.); Specka, A (Specka, A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B
(Stella, B.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.);
D.); Trinh, TN (Trinh, T. N.); Truoel, P (Truoel, P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B
S (Vinokurova, S.); Volchinski, V (Volchinski, V.); Wegener, D (Wegener, D.); Wessels, M
(Wessels, M.); Wissing, C (Wissing, Ch.); Wunsch, E (Wuensch, E.); Yeganov, V (Yeganov,
V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov,
A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.);
Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Measurement of the proton structure function F-L(x, Q(2)) at low x
Source: PHYSICS LETTERS B, 665 (4): 139-146 JUL 24 2008
Abstract: A first measurement is reported of the longitudinal proton structure function FL(X,
Q(2)) at the ep collider HERA. It is based on inclusive deep inelastic e(+)p scattering cross
section measurements with a positron beam energy of 27.5 GeV and proton beam energies of
920, 575 and 460 GeV. Employing the energy dependence of the cross section, FL is measured
in a range of squared four-momentum transfers 12 <= Q2 <=, 90 GeV2 and low Bjorken x
0.00024 <= x <= 0.0036. The F-L values agree with higher order QCD calculations based on
parton densities obtained using cross section data previously measured at HERA. (C) 2008
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.05.070
Record 111 of 499
Author(s): Hakobyan, T (Hakobyan, Tigran)
Title: Antiferromagnetic ordering of energy levels for a spin ladder with four-spin cyclic
exchange: Generalization of the Lieb-Mattis theorem
Source: PHYSICAL REVIEW B, 78 (1): Art. No. 012407 JUL 2008
Abstract: The Lieb-Mattis theorem is generalized to an antiferromagnetic spin-ladder model
with four-spin cyclic exchange interaction. We prove that for J>2 K, the antiferromagnetic
ordering of energy levels takes place separately in two sectors, which remain symmetric and
antisymmetric under the reflection with respect to the longitudinal axis of the ladder. We prove
also that at the self-dual point J=2 K, the Lieb-Mattis rule holds in the sectors with fixed number
of rung singlets. In both cases, it agrees with the similar rule for Haldane chain with appropriate
spin number.
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.78.012407
Record 112 of 499
Author(s): Jung, E (Jung, Eylee); Hwang, MR (Hwang, Mi-Ra); Ju, YH (Ju, You Hwan); Kim,
MS (Kim, Min-Soo); Yoo, SK (Yoo, Sahng-Kyoon); Kim, H (Kim, Hungsoo); Park, D (Park,
DaeKil); Son, JW (Son, Jin-Woo); Tamaryan, S (Tamaryan, S.); Cha, SK (Cha, Seong-Keuck)
Title: Greenberger-Horne-Zeilinger versus W states: Quantum teleportation through noisy
channels
Source: PHYSICAL REVIEW A, 78 (1): Art. No. 012312 JUL 2008
Abstract: Which state loses less quantum information between Greenberger-Horne-Zeilinger
(GHZ) and W states when they are prepared for two-party quantum teleportation through a noisy
channel? We address this issue by solving analytically a master equation in the Lindblad form
with introducing the noisy channels that cause the quantum channels to be mixed states. It is
found that the answer to this question is dependent on the type of noisy channel. If, for example,
the noisy channel is (L-2,L-x,L-3,L-x,L-4,L-x) type, where the L's denote the Lindblad
operators, the GHZ state is always more robust than the W state, i.e., the GHZ state preserves
more quantum information. In, however, the (L-2,L-y,L-3,L-y,L-4,L-y)-type channel the
situation becomes completely reversed. In the (L-2,L-z,L-3,L-z,L-4,L-z)-type channel, the W
state is more robust than the GHZ state when the noisy parameter (kappa) is comparatively small
while the GHZ state becomes more robust when kappa is large. In isotropic noisy channel we
found that both states preserve an equal amount of quantum information. A relation between the
average fidelity and entanglement for the mixed state quantum channels are discussed.
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.78.012312
Record 113 of 499
Author(s): Mkrtchyan, H (Mkrtchyan, H.); Bosted, PE (Bosted, P. E.); Adams, GS (Adams, G.
S.); Ahmidouch, A (Ahmidouch, A.); Angelescu, I (Angelescu, I.); Arrington, J (Arrington, J.);
Asaturyan, R (Asaturyan, R.); Baker, OK (Baker, O. K.); Benmouna, N (Benmouna, N.);
Bertoncini, C (Bertoncini, C.); Blok, HP (Blok, H. P.); Boeglin, WU (Boeglin, W. U.); Breuer, H
(Breuer, H.); Christy, ME (Christy, M. E.); Connell, SH (Connell, S. H.); Cui, Y (Cui, Y.);
Dalton, MM (Dalton, M. M.); Danagoulian, S (Danagoulian, S.); Day, D (Day, D.); Dodario, T
(Dodario, T.); Dunne, JA (Dunne, J. A.); Dutta, D (Dutta, D.); El Khayari, N (El Khayari, N.);
Ent, R (Ent, R.); Fenker, HC (Fenker, H. C.); Frolov, VV (Frolov, V. V.); Gan, L (Gan, L.);
Gaskell, D (Gaskell, D.); Hafidi, K (Hafidi, K.); Hinton, W (Hinton, W.); Holt, RJ (Holt, R. J.);
Horn, T (Horn, T.); Huber, GM (Huber, G. M.); Hungerford, E (Hungerford, E.); Jiang, X (Jiang,
X.); Jones, M (Jones, M.); Joo, K (Joo, K.); Kalantarians, N (Kalantarians, N.); Kelly, JJ (Kelly,
J. J.); Keppel, CE (Keppel, C. E.); Kubarovsky, V (Kubarovsky, V.); Li, Y (Li, Y.); Liang, Y
(Liang, Y.); Malace, S (Malace, S.); Markowitz, P (Markowitz, P.); McGrath, E (McGrath, E.);
Mckee, P (McKee, P.); Meekins, DG (Meekins, D. G.); Moziak, B (Moziak, B.); Navasardyan, T
(Navasardyan, T.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Opper, AK
(Opper, A. K.); Ostapenko, T (Ostapenko, T.); Reimer, PE (Reimer, P. E.); Reinhold, J
(Reinhold, J.); Roche, J (Roche, J.); Rock, SE (Rock, S. E.); Schulte, E (Schulte, E.); Segbefia, E
(Segbefia, E.); Smith, C (Smith, C.); Smith, GR (Smith, G. R.); Stoler, P (Stoler, P.);
Tadevosyan, V (Tadevosyan, V.); Tang, L (Tang, L.); Ungaro, M (Ungaro, M.); Uzzle, A
(Uzzle, A.); Vidakovic, S (Vidakovic, S.); Villano, A (Villano, A.); Vulcan, WF (Vulcan, W.
F.); Wang, M (Wang, M.); Warren, G (Warren, G.); Wesselmann, F (Wesselmann, F.);
Wojtsekhowski, B (Wojtsekhowski, B.); Wood, SA (Wood, S. A.); Xu, C (Xu, C.); Yuan, L
(Yuan, L.); Zheng, X (Zheng, X.); Zhu, H (Zhu, H.)
Title: Transverse momentum dependence of semi-inclusive pion production
Source: PHYSICS LETTERS B, 665 (1): 20-25 JUL 3 2008
Abstract: Cross sections for semi-inclusive electroproduction of charged pions (pi(+/-)) from
both proton and deuteron targets were measured for 0.2 < x < 0.5, 2 < Q(2) < 4 GeV2, 0.3 < z <
1, and P-t(2) < 0.2 GeV2. For P-t < 0.1 GeV, we find the azimuthal dependence to be small, as
expected theoretically. For both pi(+) and pi(-), the P-t dependence from the deuteron is found to
be slightly weaker than from the proton. In the context of a simple model, this implies that the
initial transverse momenta width of d quarks is larger than for u quarks and, contrary to
expectations, the transverse momentum width of the favored fragmentation function is larger
than the unfavored one. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.05.047
Record 114 of 499
Author(s): Slifer, K (Slifer, K.); Amarian, M (Amarian, M.); Auerbach, L (Auerbach, L.);
Averett, T (Averett, T.); Berthot, J (Berthot, J.); Bertin, P (Bertin, P.); Bertozzi, B (Bertozzi, B.);
Black, T (Black, T.); Brash, E (Brash, E.); Brown, D (Brown, D.); Burtin, E (Burtin, E.);
Calarco, J (Calarco, J.); Cates, G (Cates, G.); Chai, Z (Chai, Z.); Chen, JP (Chen, J. -P.); Choi, S
(Choi, Seonho); Chudakov, E (Chudakov, E.); Atti, CCD (Atti, C. Ciofi degli); Cisbani, E
(Cisbani, E.); de Jager, CW (de Jager, C. W.); Deur, A (Deur, A.); DiSalvo, R (DiSalvo, R.);
Dieterich, S (Dieterich, S.); Djawotho, P (Djawotho, P.); Finn, M (Finn, M.); Fissum, K (Fissum,
K.); Fonvieille, H (Fonvieille, H.); Frullani, S (Frullani, S.); Gao, H (Gao, H.); Gao, J (Gao, J.);
Garibaldi, F (Garibaldi, F.); Gasparian, A (Gasparian, A.); Gilad, S (Gilad, S.); Gilman, R
(Gilman, R.); Glamazdin, A (Glamazdin, A.); Glashausser, C (Glashausser, C.); Glockle, W
(Gloeckle, W.); Golak, J (Golak, J.); Goldberg, E (Goldberg, E.); Gomez, J (Gomez, J.);
Gorbenko, V (Gorbenko, V.); Hansen, JO (Hansen, J. -O.); Hersman, B (Hersman, B.); Holmes,
R (Holmes, R.); Huber, GM (Huber, G. M.); Hughes, E (Hughes, E.); Humensky, B (Humensky,
B.); Incerti, S (Incerti, S.); Iodice, M (Iodice, M.); Jensen, S (Jensen, S.); Jiang, X (Jiang, X.);
Jones, C (Jones, C.); Jones, G (Jones, G.); Jones, M (Jones, M.); Jutier, C (Jutier, C.); Kamada,
H (Kamada, H.); Ketikyan, A (Ketikyan, A.); Kominis, I (Kominis, I.); Korsch, W (Korsch, W.);
Kramer, K (Kramer, K.); Kumar, K (Kumar, K.); Kumbartzki, G (Kumbartzki, G.); Kuss, M
(Kuss, M.); Lakuriqi, E (Lakuriqi, E.); Laveissiere, G (Laveissiere, G.); Lerose, JJ (Lerose, J. J.);
Liang, M (Liang, M.); Liyanage, N (Liyanage, N.); Lolos, G (Lolos, G.); Malov, S (Malov, S.);
Marroncle, J (Marroncle, J.); McCormick, K (McCormick, K.); McKeown, RD (McKeown, R.
D.); Meziani, ZE (Meziani, Z. -E.); Michaels, R (Michaels, R.); Mitchell, J (Mitchell, J.); Nogga,
A (Nogga, A.); Pace, E (Pace, E.); Papandreou, Z (Papandreou, Z.); Pavlin, T (Pavlin, T.);
Petratos, GG (Petratos, G. G.); Pripstein, D (Pripstein, D.); Prout, D (Prout, D.); Ransome, R
(Ransome, R.); Roblin, Y (Roblin, Y.); Rowntree, D (Rowntree, D.); Rvachev, M (Rvachev,
M.); Sabatie, F (Sabatie, F.); Saha, A (Saha, A.); Salme, G (Salme, G.); Scopetta, S (Scopetta,
S.); Skibinski, R (Skibinski, R.); Souder, P (Souder, P.); Saito, T (Saito, T.); Strauch, S (Strauch,
S.); Suleiman, R (Suleiman, R.); Takahashi, K (Takahashi, K.); Teijiro, S (Teijiro, S.); Todor, L
(Todor, L.); Tsubota, H (Tsubota, H.); Ueno, H (Ueno, H.); Urciuoli, G (Urciuoli, G.); Van der
Meer, R (Van der Meer, R.); Vernin, P (Vernin, P.); Voskanian, H (Voskanian, H.); Witala, H
(Witala, H.); Wojtsekhowski, B (Wojtsekhowski, B.); Xiong, F (Xiong, F.); Xu, W (Xu, W.);
Yang, JC (Yang, J. -C.); Zhang, B (Zhang, B.); Zolnierczuk, P (Zolnierczuk, P.)
Title: He-3 spin-dependent cross sections and sum rules
Source: PHYSICAL REVIEW LETTERS, 101 (2): Art. No. 022303 JUL 11 2008
Abstract: We present a measurement of the spin-dependent cross sections for the (3)(He) over
right arrow((e) over right arrow ,e')X reaction in the quasielastic and resonance regions at a fourmomentum transfer 0.1 <= Q(2)<= 0.9 GeV2. The spin-structure functions have been extracted
and used to evaluate the nuclear Burkhardt-Cottingham and extended Gerasimov-Drell-Hearn
sum rules for the first time. The data are also compared to an impulse approximation calculation
and an exact three-body Faddeev calculation in the quasielastic region.
ISSN: 0031-9007
Record 115 of 499
Author(s): Makhov, VN (Makhov, V. N.); Lushchik, A (Lushchik, A.); Lushchik, CB
(Lushchik, Ch. B.); Kirm, M (Kirm, M.); Vasil'chenko, E (Vasil'chenko, E.); Vielhauer, S
(Vielhauer, S.); Haruturlyan, VV (Haruturlyan, V. V.); Aleksanyan, E (Aleksanyan, E.)
Title: Luminescence and radiation defects in electron-irradiated Al2O3 and Al2O3 : Cr
Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION BBEAM INTERACTIONS WITH MATERIALS AND ATOMS, 266 (12-13): 2949-2952 JUN
2008
Abstract: Luminescence of Al2O3 single crystals doped with Cr3+ (similar to 500 ppm) (ruby),
non-irradiated and irradiated by 50-MeV electrons, has been studied in a wide range of excitation
energy (3.75-20 eV) at 9 K and compared with the luminescence of irradiated undoped Al2O3,
Irradiation of ruby by 50-Mev electrons (up to fluences of 2 x 10(17) e/cm(2)) does not lead to
any significant changes of Cr3+ related luminescence. The comparison of absorption spectra and
the excitation spectra of different emissions has shown that the presence of Cr3+ ions strongly
reduces the creation of F centers in Al2O3:Cr by 50-MeV electrons. (C) 2008 Elsevier B.V. All
rights reserved.
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2008.03.145
Record 116 of 499
Author(s): Tchrakian, T (Tchrakian, T.)
Title: Dirac-Yang monopoles in all dimensions and their regular counterparts
Source: PHYSICS OF ATOMIC NUCLEI, 71 (6): 1116-1122 JUN 2008
Abstract: The Dirac-Yang monopoles are singular Yang-Mills field configurations in all
Euclidean dimensions. The regular counterpart of the Dirac monopole in D = 3 is the 't Hooft-
Polyakov monopole, the former being simply a gauge transform of the asymptotic fields of the
latter. Here, regular counterparts of Dirac-Yang monopoles in all dimensions are described. In
the first part of this work, the hierarchy of Dirac Yang monopoles will be defined; in the second
part, the motivation to study these in a topical context will be briefly presented; and in the last
part, two classes of regular counterparts to the Dirac-Yang hierarchy will be presented.
ISSN: 1063-7788
DOI: 10.1134/S106377880806015X
Record 117 of 499
Author(s): Saakian, DB (Saakian, David B.); Kirakosyan, Z (Kirakosyan, Zara); Hu, CK (Hu,
Chin-Kun)
Title: Diploid biological evolution models with general smooth fitness landscapes and
recombination
Source: PHYSICAL REVIEW E, 77 (6): Art. No. 061907 Part 1 JUN 2008
Abstract: Using a Hamilton-Jacobi equation approach, we obtain analytic equations for steadystate population distributions and mean fitness functions for Crow-Kimura and Eigen-type
diploid biological evolution models with general smooth hypergeometric fitness landscapes. Our
numerical solutions of diploid biological evolution models confirm the analytic equations
obtained. We also study the parallel diploid model for the simple case of recombination and
calculate the variance of distribution, which is consistent with numerical results.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.77.061907
Record 118 of 499
Author(s): Nasseripour, R (Nasseripour, R.); Raue, BA (Raue, B. A.); Carman, DS (Carman, D.
S.); Ambrozewicz, P (Ambrozewicz, P.); Amaryan, MJ (Amaryan, M. J.); Anciant, E (Anciant,
E.); Anghinolfi, M (Anghinolfi, M.); Asavapibhop, B (Asavapibhop, B.); Asryan, G (Asryan,
G.); Audit, G (Audit, G.); Auger, T (Auger, T.); Avakian, H (Avakian, H.); Bagdasaryan, H
(Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.);
Barrow, S (Barrow, S.); Battaglieri, M (Battaglieri, M.); Beard, K (Beard, K.); Bedlinskiy, I
(Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.); Bellis, M (Bellis, M.); Benmouna, N
(Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.); Blaszczyk, L
(Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bouchigny, S (Bouchigny, S.); Boiarinov, S
(Boiarinov, S.); Bradford, R (Bradford, R.); Branford, D (Branford, D.); Briscoe, WJ (Briscoe,
W. J.); Brooks, WK (Brooks, W. K.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu,
C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.); Casey, L (Casey, L.); Cetina, C
(Cetina, C.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P
Crabb, D (Crabb, D.); Crede, V (Crede, V.); Dale, D (Dale, D.); Dashyan, N (Dashyan, N.); De
Masi, R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis, E.); Degtyarenko,
PV (Degtyarenko, P. V.); Dennis, L (Dennis, L.); Deur, A (Deur, A.); Dhuga, KS (Dhuga, K. S.);
Dickson, R (Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge, G. E.); Doughty, D
(Doughty, D.); Dragovitsch, P (Dragovitsch, P.); Dugger, M (Dugger, M.); Dytman, S (Dytman,
S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El
Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fatemi, R
(Fatemi, R.); Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Feuerbach, RJ (Feuerbach,
R. J.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.); Garccon, M
(Garccon, M.); Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP
(Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girard, P (Girard, P.); Girod, FX (Girod, F.
X.); Goetz, JT (Goetz, J. T.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.);
Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.);
Gyurjyan, V (Gyurjyan, V.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hanretty, C
(Hanretty, C.); Hardie, J (Hardie, J.); Heddle, D (Heddle, D.); Hersman, FW (Hersman, F. W.);
Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hu, J (Hu, J.); HydeWright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov,
BS (Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins,
D.); Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo, K.); Juengst, HG (Juengst,
H. G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker,
M.); Kim, KY (Kim, K. Y.); Kim, K (Kim, K.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein,
FJ (Klein, F. J.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L. H.);
Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV
(Kuleshov, S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J.
M.); Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Livingston, K (Livingston,
K.); Lu, HY (Lu, H. Y.); Lukashin, K (Lukashin, K.); MacCormick, M (MacCormick, M.);
Manak, JJ (Manak, J. J.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McAleer, S
(McAleer, S.); McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA
(Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe,
T.); Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.);
(Nadel-Turonski, P.); Niccolai, S (Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I
(Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.); Niyazov,
RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.); Ostrovidov, AI
(Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.);
Pereira, SA (Pereira, S. Anefalos); Peterson, G (Peterson, G.); Philips, SA (Philips, S. A.);
(Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM (Preedom, B. M.); Price, JW
(Price, J. W.); Procureur, S (Procureur, S.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu,
D.); Qin, LM (Qin, L. M.); Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani,
M.); Ritchie, BG (Ritchie, B. G.); Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Rubin, PD
(Rubin, P. D.); Sabatie, F (Sabatie, F.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.);
Santoro, JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.); Sayre, D (Sayre, D.); Schumacher,
RA (Schumacher, R. A.); Serov, VS (Serov, V. S.); Shafi, A (Shafi, A.); Sharabian, YG
(Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov, N. V.); Simionatto, S
(Simionatto, S.); Skabelin, AV (Skabelin, A. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L.
C.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan,
SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Taylor, S
(Taylor, S.); Tedeschi, DJ (Tedeschi, D. J.); Thompson, R (Thompson, R.); Tkabladze, A
(Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Ungaro, M (Ungaro, M.); Vineyard, MF
(Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Wang, K (Wang, K.); Watts, DP (Watts, D.
P.); Weinstein, LB (Weinstein, L. B.); Weygand, DP (Weygand, D. P.); Williams, M (Williams,
M.); Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.);
Yun, J (Yun, J.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao,
Z. W.)
Title: Polarized structure function sigma(')(LT) for H-1((e)over-right-arrow,e(')K(+))Lambda in
the nucleon resonance region
Source: PHYSICAL REVIEW C, 77 (6): Art. No. 065208 JUN 2008
Abstract: The first measurements of the polarized structure function sigma(')(LT) for the
reaction H-1(e,e(')K(+))Lambda in the nucleon resonance region are reported. Measurements are
included from threshold up to W=2.05 GeV for central values of Q(2) of 0.65 and 1.00 GeV2,
and nearly the entire kaon center-of-mass angular range. sigma(')(LT) is the imaginary part of the
longitudinal-transverse response and is expected to be sensitive to interferences between
competing intermediate s-channel resonances, as well as resonant and nonresonant processes.
The results for sigma(')(LT) are comparable in magnitude to previously reported results from
CLAS for sigma(LT), the real part of the same response. An intriguing sign change in
sigma(')(LT) is observed in the high Q(2) data at W approximate to 1.9 GeV. Comparisons to
several existing model predictions are shown.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.77.065208
Record 119 of 499
Author(s): Jung, E (Jung, Eylee); Hwang, MR (Hwang, Mi-Ra); Kim, H (Kim, Hungsoo); Kim,
MS (Kim, Min-Soo); Park, D (Park, DaeKil); Son, JW (Son, Jin-Woo); Tamaryan, S (Tamaryan,
Sayatnova)
Title: Reduced state uniquely defines the Groverian measure of the original pure state
Source: PHYSICAL REVIEW A, 77 (6): Art. No. 062317 JUN 2008
Abstract: Groverian and geometric entanglement measures of the n-party pure state are
expressed by the (n-1)-party reduced state density operator directly. This main theorem derives
several important consequences. First, if two pure n-qudit states have reduced states of (n-1)qudits, which are equivalent under local unitary transformations, then they have equal Groverian
and geometric entanglement measures. Second, both measures have an upper bound for pure
states. However, this upper bound is reached only for two-qubit systems. Third, it converts
effectively the nonlinear eigenvalue problem for the three-qubit Groverian measure into linear
eigenvalue equations. Some typical solutions of these linear equations are written explicitly and
the features of the general solution are discussed in detail.
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.77.062317
Record 120 of 499
W.); Avakian, R (Avakian, R.); Avetissian, A (Avetissian, A.); Avetisyan, E (Avetisyan, E.);
Barion, L (Barion, L.); Belostotski, S (Belostotski, S.); Bianchi, N (Bianchi, N.); Blok, HP
(Blok, H. P.); Bottcher, H (Boettcher, H.); Bonomo, C (Bonomo, C.); Borissov, A (Borissov,
A.); Brull, A (Bruell, A.); Bryzgalov, V (Bryzgalov, V.); Burns, J (Burns, J.); Capiluppi, M
(Capiluppi, M.); Capitani, GP (Capitani, G. P.); Cisbani, E (Cisbani, E.); Ciullo, G (Ciullo, G.);
Contalbrigo, M (Contalbrigo, M.); Dalpiaz, PF (Dalpiaz, P. F.); Deconinck, W (Deconinck, W.);
De Leo, R (De Leo, R.); Demey, M (Demey, M.); De Nardo, L (De Nardo, L.); De Sanctis, E
(De Sanctis, E.); Diefenthaler, M (Diefenthaler, M.); Di Nezza, P (Di Nezza, P.); Dreschler, J
(Dreschler, J.); Duren, M (Dueren, M.); Ehrenfried, M (Ehrenfried, M.); Elbakian, G (Elbakian,
G.); Ellinghaus, F (Ellinghaus, F.); Elschenbroich, U (Elschenbroich, U.); Fabbri, R (Fabbri, R.);
Fantoni, A (Fantoni, A.); Felawka, L (Felawka, L.); Frullani, S (Frullani, S.); Funel, A (Funel,
A.); Gabbert, D (Gabbert, D.); Gapienko, G (Gapienko, G.); Gapienko, V (Gapienko, V.);
Garibaldi, F (Garibaldi, F.); Gavrilov, G (Gavrilov, G.); Gharibyan, V (Gharibyan, V.);
Giordano, F (Giordano, F.); Gliske, S (Gliske, S.); Guler, H (Guler, H.); Hadjidakis, C
(Hadjidakis, C.); Hasch, D (Hasch, D.); Hasegawa, T (Hasegawa, T.); Hill, G (Hill, G.);
Hillenbrand, A (Hillenbrand, A.); Hoek, M (Hoek, M.); Holler, Y (Holler, Y.); Hristova, I
(Hristova, I.); Iarygin, G (Iarygin, G.); Imazu, Y (Imazu, Y.); Ivanilov, A (Ivanilov, A.); Izotov,
A (Izotov, A.); Jackson, HE (Jackson, H. E.); Jgoun, A (Jgoun, A.); Joosten, S (Joosten, S.);
Kaiser, R (Kaiser, R.); Keri, T (Keri, T.); Kinney, E (Kinney, E.); Kisselev, A (Kisselev, A.);
Kopytin, M (Kopytin, M.); Korotkov, V (Korotkov, V.); Kozlov, V (Kozlov, V.); Kravchenko, P
(Kravchenko, P.); Krivokhijine, VG (Krivokhijine, V. G.); Lagamba, L (Lagamba, L.); Lamb, R
(Lamb, R.); Lapikaas, L (Lapikas, L.); Lehmann, I (Lehmann, I.); Lenisa, P (Lenisa, P.); LindenLevy, LA (Linden-Levy, L. A.); Lorenzon, W (Lorenzon, W.); Lu, S (Lu, S.); Lu, X (Lu, X.);
Ma, BQ (Ma, B. -Q.); Mahon, D (Mahon, D.); Maiheu, B (Maiheu, B.); Makins, NCR (Makins,
N. C. R.); Mao, Y (Mao, Y.); Marianski, B (Marianski, B.); Marukyan, H (Marukyan, H.);
Miller, CA (Miller, C. A.); Miyachi, Y (Miyachi, Y.); Muccifora, V (Muccifora, V.); Murray, M
(Murray, M.); Mussgiller, A (Mussgiller, A.); Nagaitsev, A (Nagaitsev, A.); Nappi, E (Nappi,
E.); Naryshkin, Y (Naryshkin, Y.); Nass, A (Nass, A.); Negodaev, M (Negodaev, M.); Nowak,
WD (Nowak, W. -D.); Osborne, A (Osborne, A.); Pappalardo, LL (Pappalardo, L. L.); PerezBenito, R (Perez-Benito, R.); Pickert, N (Pickert, N.); Raithel, M (Raithel, M.); Reimer, PE
(Reimer, P. E.); Reischl, A (Reischl, A.); Reolon, AR (Reolon, A. R.); Riedl, C (Riedl, C.); Rith,
K (Rith, K.); Rock, SE (Rock, S. E.); Rosner, G (Rosner, G.); Rostomyan, A (Rostomyan, A.);
Rubacek, L (Rubacek, L.); Rubin, J (Rubin, J.); Ruiz, AL (Ruiz, A. L.); Ryckbosch, D
(Ryckbosch, D.); Salomatin, Y (Salomatin, Y.); Sanjiev, I (Sanjiev, I.); Schafer, A (Schaefer,
A.); Schnell, G (Schnell, G.); Schuler, KP (Schueler, K. P.); Seitz, B (Seitz, B.); Shearer, C
(Shearer, C.); Shibata, TA (Shibata, T. -A.); Shutov, V (Shutov, V.); Stancari, M (Stancari, M.);
Statera, M (Statera, M.); Steffens, E (Steffens, E.); Steijger, JJM (Steijger, J. J. M.); Stenzel, H
(Stenzel, H.); Stewart, J (Stewart, J.); Stinzing, F (Stinzing, F.); Tait, P (Tait, P.); Taroian, S
(Taroian, S.); Terkulov, A (Terkulov, A.); Trzcinski, A (Trzcinski, A.); Tytgat, M (Tytgat, M.);
Vandenbroucke, A (Vandenbroucke, A.); van der Nat, PB (van der Nat, P. B.); van der
Steenhoven, G (van der Steenhoven, G.); Van Haarlem, Y (Van Haarlem, Y.); Van Hulse, C
(Van Hulse, C.); Varanda, M (Varanda, M.); Veretennikov, D (Veretennikov, D.); Vikhrov, V
(Vikhrov, V.); Vilardi, I (Vilardi, I.); Vogel, C (Vogel, C.); Wang, S (Wang, S.); Yaschenko, S
(Yaschenko, S.); Ye, H (Ye, H.); Ye, Z (Ye, Z.); Yen, S (Yen, S.); Yu, W (Yu, W.); Zeiler, D
(Zeiler, D.); Zihlmann, B (Zihlmann, B.); Zupranski, P (Zupranski, P.)
Title: Measurement of azimuthal asymmetries with respect to both beam charge and transverse
target polarization in exclusive electroproduction of real photons
Source: JOURNAL OF HIGH ENERGY PHYSICS, (6): Art. No. 066 JUN 2008
Abstract: Azimuthal asymmetries in exclusive electroproduction of real photons are measured
for the first time with respect to transverse target polarisation, providing new constraints on
Generalized Parton Distributions. From the same data set on a hydrogen target, new results for
the beam-charge asymmetry are also extracted with better precision than those previously
reported. By comparing model calculations with measured asymmetries attributed to the
interference between the deeply virtual Compton scattering and Bethe-Heitler processes, a
model-dependent constraint is obtained on the total angular momenta carried by up and down
quarks in the nucleon.
ISSN: 1126-6708
Article Number: 066
Record 121 of 499
W.); Avakian, R (Avakian, R.); Avetissian, A (Avetissian, A.); Avetissian, E (Avetissian, E.);
Bacchetta, A (Bacchetta, A.); Barion, L (Barion, L.); Belostotski, S (Belostotski, S.); Bianchi, N
(Bianchi, N.); Blok, HP (Blok, H. P.); Bottcher, H (Boettcher, H.); Bonomo, C (Bonomo, C.);
Borissov, A (Borissov, A.); Borysenko, A (Borysenko, A.); Brull, A (Bruell, A.); Bryzgalov, V
(Bryzgalov, V.); Capiluppi, M (Capiluppi, M.); Capitani, GP (Capitani, G. P.); Cisbani, E
(Cisbani, E.); Ciullo, G (Ciullo, G.); Contalbrigo, M (Contalbrigo, M.); Dalpiaz, PF (Dalpiaz, P.
F.); Deconinck, W (Deconinck, W.); De Leo, R (De Leo, R.); Demey, M (Demey, M.); De
Nardo, L (De Nardo, L.); De Sanctis, E (De Sanctis, E.); Devitsin, E (Devitsin, E.); Diefenthaler,
M (Diefenthaler, M.); Di Nezza, P (Di Nezza, P.); Dreschler, J (Dreschler, J.); Duren, M
(Dueren, M.); Ehrenfried, M (Ehrenfried, M.); Elalaoui-Moulay, A (Elalaoui-Moulay, A.);
Elbakian, G (Elbakian, G.); Ellinghaus, F (Ellinghaus, F.); Elschenbroich, U (Elschenbroich, U.);
Fabbri, R (Fabbri, R.); Fantoni, A (Fantoni, A.); Felawka, L (Felawka, L.); Frullani, S (Frullani,
S.); Funel, A (Funel, A.); Gapienko, G (Gapienko, G.); Gapienko, V (Gapienko, V.); Garibaldi,
F (Garibaldi, F.); Gavrilov, G (Gavrilov, G.); Gharibyan, V (Gharibyan, V.); Giordano, F
(Giordano, F.); Grebeniouk, O (Grebeniouk, O.); Gregor, IM (Gregor, I. M.); Griffioen, K
(Griffioen, K.); Guler, H (Guler, H.); Hadjidakis, C (Hadjidakis, C.); Hartig, M (Hartig, M.);
Hasch, D (Hasch, D.); Hasegawa, T (Hasegawa, T.); Hesselink, WHA (Hesselink, W. H. A.);
Hill, G (Hill, G.); Hillenbrand, A (Hillenbrand, A.); Hoek, M (Hoek, M.); Holler, Y (Holler, Y.);
Hommez, B (Hommez, B.); Hristova, I (Hristova, I.); Iarygin, G (Iarygin, G.); Imazu, Y (Imazu,
Y.); Ivanilov, A (Ivanilov, A.); Izotov, A (Izotov, A.); Jackson, HE (Jackson, H. E.); Jgoun, A
(Jgoun, A.); Kaiser, R (Kaiser, R.); Keri, T (Keri, T.); Kinney, E (Kinney, E.); Kisselev, A
(Kisselev, A.); Kobayashi, T (Kobayashi, T.); Kopytin, M (Kopytin, M.); Korotkov, V
(Korotkov, V.); Kozlov, V (Kozlov, V.); Krauss, B (Krauss, B.); Kravchenko, P (Kravchenko,
P.); Krivokhijine, VG (Krivokhijine, V. G.); Lagamba, L (Lagamba, L.); Lapikas, L (Lapikas,
L.); Lenisa, P (Lenisa, P.); Liebing, P (Liebing, P.); Linden-Levy, LA (Linden-Levy, L. A.);
Lorenzon, W (Lorenzon, W.); Lu, S (Lu, S.); Lu, X (Lu, X.); Ma, BQ (Ma, B. -Q.); Maiheu, B
(Maiheu, B.); Makins, NCR (Makins, N. C. R.); Mao, Y (Mao, Y.); Marianski, B (Marianski,
B.); Marukyan, H (Marukyan, H.); Mexner, V (Mexner, V.); Miller, CA (Miller, C. A.);
Miyachi, Y (Miyachi, Y.); Muccifora, V (Muccifora, V.); Murray, M (Murray, M.); Nagaitsev, A
(Nagaitsev, A.); Nappi, E (Nappi, E.); Naryshkin, Y (Naryshkin, Y.); Negodaev, M (Negodaev,
M.); Nowak, WD (Nowak, W. -D.); Osborne, A (Osborne, A.); Pappalardo, LL (Pappalardo, L.
L.); Perez-Benito, R (Perez-Benito, R.); Pickert, N (Pickert, N.); Raithel, M (Raithel, M.);
Reggiani, D (Reggiani, D.); Reimer, PE (Reimer, P. E.); Reischl, A (Reischl, A.); Reolon, AR
(Reolon, A. R.); Riedl, C (Riedl, C.); Rith, K (Rith, K.); Rock, SE (Rock, S. E.); Rosner, G
(Rosner, G.); Rostomyan, A (Rostomyan, A.); Rubacek, L (Rubacek, L.); Rubin, J (Rubin, J.);
Ryckbosch, D (Ryckbosch, D.); Salomatin, Y (Salomatin, Y.); Sanjiev, I (Sanjiev, I.); Schafer, A
(Schaefer, A.); Schnell, G (Schnell, G.); Schuler, KP (Schueler, K. P.); Seitz, B (Seitz, B.);
Shearer, C (Shearer, C.); Shibata, TA (Shibata, T. -A.); Shutov, V (Shutov, V.); Stancari, M
(Stancari, M.); Statera, M (Statera, M.); Steffens, E (Steffens, E.); Steijger, JJM (Steijger, J. J.
M.); Stenzel, H (Stenzel, H.); Stewart, J (Stewart, J.); Stinzing, F (Stinzing, F.); Streit, J (Streit,
J.); Tait, P (Tait, P.); Taroian, S (Taroian, S.); Tchuiko, B (Tchuiko, B.); Terkulov, A (Terkulov,
A.); Trzcinski, A (Trzcinski, A.); Tytgat, M (Tytgat, M.); Vandenbroucke, A (Vandenbroucke,
A.); van der Nat, B (van der Nat, B.); van der Steenhoven, G (van der Steenhoven, G.); van
Haarlem, Y (van Haarlem, Y.); van Hulse, C (van Hulse, C.); Veretennikov, D (Veretennikov,
D.); Vikhrov, V (Vikhrov, V.); Vogel, C (Vogel, C.); Wang, S (Wang, S.); Ye, Y (Ye, Y.); Ye, Z
(Ye, Z.); Yen, S (Yen, S.); Zeiler, D (Zeiler, D.); Zihlmann, B (Zihlmann, B.); Zupranski, P
(Zupranski, P.)
Group Author(s): HERMES Collaboration
Title: Evidence for a transverse single-spin asymmetry in leptoproduction of pi(+)pi(-) pairs
Source: JOURNAL OF HIGH ENERGY PHYSICS, (6): Art. No. 017 JUN 2008
Abstract: A single-spin asymmetry was measured in the azimuthal distribution of pi(+)pi(-)
pairs produced in semi-inclusive deep-inelastic scattering on a transversely polarized hydrogen
target. For the first time, evidence is found for a correlation between the transverse target
polarization and the azimuthal orientation of the plane containing the two pions. The
corresponding single-spin asymmetry is expected to be related to the product of the little-known
quark transversity distribution function and an unknown naive-T-odd chiral-odd dihadron
fragmentation function.
ISSN: 1126-6708
Article Number: 017
Record 122 of 499
Author(s): Baumgarten, C (Baumgarten, C.); Braun, B (Braun, B.); Capiluppi, M (Capiluppi,
M.); Ciullo, G (Ciullo, G.); Dalpiaz, PF (Dalpiaz, P. F.); Kolster, H (Kolster, H.); Lenisa, P
(Lenisa, P.); Marukyan, H (Marukyan, H.); Nass, A (Nass, A.); Reggiani, D (Reggiani, D.);
Stancari, M (Stancari, M.); Steffans, E (Steffans, E.)
Title: First measurement of the hydrogen spin-exchange collision cross-section in the low
temperature region
Source: EUROPEAN PHYSICAL JOURNAL D, 48 (3): 343-350 JUL 2008
Abstract: The spin-exchange collision cross-section for hydrogen atoms has been measured for
the first time in the low temperature range 40-100 K by using the polarized hydrogen gas target
of the HERMES experiment at DESY (Hamburg, Germany). The results agree with a previous
measurement in the overlapping temperature region 80-100 K, while seem to hint an increasing
behaviour with temperature in the region 50-80 K.
ISSN: 1434-6060
DOI: 10.1140/epjd/e2008-00124-1
Record 123 of 499
Baranov, P (Baranov, P.); Barrelet, E (Barrelet, E.); Bartel, W (Bartel, W.); Baudrand, S
(Baudrand, S.); Beckingham, M (Beckingham, M.); Begzsuren, K (Begzsuren, K.); Behnke, O
(Behnke, O.); Belousov, A (Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.);
Boenig, MO (Boenig, M. -O.); Boudry, V (Boudry, V.); Bozovic-Jelisavcic, I (BozovicJelisavcic, I.); Bracinik, J (Bracinik, J.); Brandt, G (Brandt, G.); Brinkmann, M (Brinkmann,
M.); Brisson, V (Brisson, V.); Bruncko, D (Bruncko, D.); Bunyatyan, A (Bunyatyan, A.);
Buschhorn, G (Buschhorn, G.); Bystritskaya, L (Bystritskaya, L.); Campbell, AJ (Campbell, A.
J.); Avila, KBC (Avila, K. B. Cantun); Cassol-Brunner, F (Cassol-Brunner, F.); Cerny, K
(Cerny, K.); Cerny, V (Cerny, V.); Chekelian, V (Chekelian, V.); Cholewa, A (Cholewa, A.);
Contreras, JG (Contreras, J. G.); Coughlan, JA (Coughlan, J. A.); Cozzika, G (Cozzika, G.);
Cvach, J (Cvach, J.); Dainton, JB (Dainton, J. B.); Daum, K (Daum, K.); Deak, M (Deak, M.);
de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.); Del Degan, M (Del Degan, M.); Delvax, J
(Delvax, J.); De Roeck, A (De Roeck, A.); De Wolf, EA (De Wolf, E. A.); Diaconu, C (Diaconu,
C.); Dodonov, V (Dodonov, V.); Dossanov, A (Dossanov, A.); Dubak, A (Dubak, A.); Eckerlin,
G (Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eisele, F (Eisele, F.);
Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov, S.); Falkiewicz, A
(Falkiewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A
(Fedotov, A.); Felst, R (Felst, R.); Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.); Finke, L
(Finke, L.); Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Franke, G (Franke, G.);
Frisson, T (Frisson, T.); Gabathuler, E (Gabathuler, E.); Gayler, J (Gayler, J.); Ghazaryan, S
(Ghazaryan, S.); Giazov, A (Giazov, A.); Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich, L.);
Goettlich, M (Goettlich, M.); Gogitidze, N (Gogitidze, N.); Gouzevitch, M (Gouzevitch, M.);
Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Grell, BR (Grell, B. R.); Grindhammer, G
(Grindhammer, G.); Habib, S (Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.);
Helebrant, C (Helebrant, C.); Henderson, RCW (Henderson, R. C. W.); Henschel, H (Henschel,
H.); Herrera, G (Herrera, G.); Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.);
Hoffmann, D (Hoffmann, D.); Horisberger, R (Horisberger, R.); Hovhannisyan, A
E.); Janssen, X (Janssen, X.); Jemanov, V (Jemanov, V.); Jonson, L (Jonson, L.); Johnson, DP
M.); Kleinwort, C (Kleinwort, C.); Klimkovich, T (Klimkovich, T.); Kluge, I (Kluge, I.);
Knutsson, A (Knutsson, A.); Kogler, R (Kogler, R.); Korbel, V (Korbel, V.); Kostka, P (Kostka,
Kropivnitskaya, A (Kropivnitskaya, A.); Kroger, K (Kroeger, K.); Kutak, K (Kutak, K.);
N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce,
AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski,
E (Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti, Li.); Martyn, HU (Martyn, H. -U.);
Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer,
A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels,
V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I (Milcewicz-Mika, I.); Moreau, F (Moreau, F.);
Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Mudrinic,
M (Mudrinic, M.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov, K.);
Naroska, B (Naroska, B.); Naumann, T (Naumann, Th.); Newman, PR (Newman, P. R.);
(Nowak, K.); Nozicka, M (Nozicka, M.); Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.);
Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Pejchal, O (Pejchal, O.); Peng, H (Peng, H.);
Perez, E (Perez, E.); Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl,
D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T
(Preda, T.); Radescu, V (Radescu, V.); Rahmat, A (Rahmat, Aj.); Raicevic, N (Raicevic, N.);
Raspiareza, A (Raspiareza, A.); Ravdandorj, I (Ravdandorj, I.); Reimer, P (Reimer, P.); Risler, C
(Risler, C.); Rizvi, E (Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen, R
(Roosen, R.); Rostovtsev, A (Rostovtsev, A.); Rotaru, M (Rotaru, M.); Tabasco, JER (Tabasco,
J. E. Ruiz); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D (Salek, D.);
Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E
(Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.);
Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening, A.); Schultz-Coulon, HC (SchultzCoulon, H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN (Shaw-West, R. N.); Sheviakov, I
(Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.); Sloan, I (Sloan, I.); Smijanic, I (Smijanic, I.);
Smirnov, P (Smirnov, P.); Soloviev, Y (Soloviev, Y.); South, D (South, D.); Spaskov, V
(Spaskov, V.); Specka, A (Specka, A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.);
Stella, B (Stella, B.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, I (Sykora, I.);
S (Vinokurova, S.); Volchinskial, V (Volchinskial, V.); Wegener, D (Wegener, D.); Wessels, M
(Wessels, M.); Wissing, C (Wissing, Ch.); Wolf, R (Wolf, R.); Wunsch, E (Wunsch, E.);
Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.);
Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T
Title: A search for excited neutrinos in e(-) p collisions at HERA
Source: PHYSICS LETTERS B, 663 (5): 382-389 JUN 5 2008
Abstract: A search for first generation excited neutrinos is performed using the full e(-) p data
sample collected by the HI experiment at HERA at a centre-of-mass energy of 319 GeV,
corresponding to a total luminosity of 184 pb(-1). The electroweak decays of excited neutrinos
nu* -> nu gamma, v* -> nu Z and nu* -> eW with subsequent hadronic or leptonic decays of the
W and Z bosons are considered. No evidence for excited neutrino production is found. Mass
dependent exclusion limits on nu* production cross sections and on the ratio of the coupling to
the compositeness scale f/boolean AND are derived within gauge mediated models. A limit on
f/boolean AND A, independent of the relative couplings to the SU(2) and U(1) gauge bosons, is
also determined. These limits extend the excluded region to higher masses than has been possible
in previous excited neutrino searches. (c) 2008 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2008.04.020
Record 124 of 499
Author(s): Babujian, H (Babujian, H.); Foerster, A (Foerster, A.); Karowski, M (Karowski, M.)
Title: The nested SU(N) off-shell Bethe ansatz and exact form factors
Source: JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, 41 (27): Art.
No. 275202 JUL 11 2008
Abstract: The form factor equations are solved for a SU( N) invariant S-matrix under the
assumption that the anti-particle is identified with the bound state of N - 1 particles. The solution
is obtained explicitly in terms of the nested off-shell Bethe ansatz where the contribution from
each level is written in terms of multiple contour integrals. The general solution is illustrated for
some operators, such as the energy-momentum tensor, the fields and the current.
ISSN: 1751-8113
DOI: 10.1088/1751-8113/41/27/275202
Record 125 of 499
Author(s): Alexander, G (Alexander, G.); Barley, J (Barley, J.); Batygin, Y (Batygin, Y.);
Berridge, S (Berridge, S.); Bharadwaj, V (Bharadwaj, V.); Bower, G (Bower, G.); Bugg, W
(Bugg, W.); Decker, FJ (Decker, F. -J.); Dollan, R (Dollan, R.); Efremenko, Y (Efremenko, Y.);
Gharibyan, V (Gharibyan, V.); Hast, C (Hast, C.); Iverson, R (Iverson, R.); Kolanoski, H
(Kolanoski, H.); Kovermann, J (Kovermann, J.); Laihem, K (Laihem, K.); Lohse, T (Lohse, T.);
McDonald, KT (McDonald, K. T.); Mikhailichenko, AA (Mikhailichenko, A. A.); MoortgatPick, GA (Moortgat-Pick, G. A.); Pahl, P (Pahl, P.); Pitthan, R (Pitthan, R.); Poschl, R (Poeschl,
R.); Reinherz-Aronis, E (Reinherz-Aronis, E.); Riemann, S (Riemann, S.); Schalicke, A
(Schaelicke, A.); Schuler, KP (Schueler, K. P.); Schweizer, T (Schweizer, T.); Scott, D (Scott,
D.); Sheppard, JC (Sheppard, J. C.); Stahl, A (Stahl, A.); Szalata, ZM (Szalata, Z. M.); Walz, D
(Walz, D.); Weidemann, AW (Weidemann, A. W.)
Title: Observation of polarized positrons from an undulator-based source
Source: PHYSICAL REVIEW LETTERS, 100 (21): Art. No. 210801 MAY 30 2008
Abstract: An experiment (E166) at the Stanford Linear Accelerator Center has demonstrated a
scheme in which a multi-GeV electron beam passed through a helical undulator to generate
multi-MeV, circularly polarized photons which were then converted in a thin target to produce
positrons (and electrons) with longitudinal polarization above 80% at 6 MeV. The results are in
agreement with GEANT4 simulations that include the dominant polarization-dependent
interactions of electrons, positrons, and photons in matter.
ISSN: 0031-9007
Record 126 of 499
Author(s): Khachatryan, AK (Khachatryan, A. Kh.); Aloyan, SG (Aloyan, S. G.); May, PW
(May, P. W.); Sargsyan, R (Sargsyan, R.); Khachatryan, VA (Khachatryan, V. A.);
Baghdasaryan, VS (Baghdasaryan, V. S.)
Title: Graphite-to-diamond transformation induced by ultrasound cavitation
Source: DIAMOND AND RELATED MATERIALS, 17 (6): 931-936 JUN 2008
Abstract: Diamond microcrystals have been synthesized using ultrasonic cavitation of a
suspension of hexagonal graphite in various organic liquid inedia, at an average bulk temperature
of the liquid up to 120 degrees C and at atmospheric pressure. The yield of diamond is up to 10%
by mass. The diamonds were characterized by scanning electron microscopy, X-ray diffraction
and laser Raman spectroscopy, Analysis of the crystallite size distribution showed that the
diamonds were nearly mono-dispersed, having a size 6 or 9 mu m +/- 0.5 mu m, with cubic,
crystalline morphology. (C) 2008 Elsevier B.V. All rights reserved.
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2008.01.112
Record 127 of 499
Author(s): Saharian, AA (Saharian, A. A.); Tarloyan, AS (Tarloyan, A. S.)
Title: Wightman function and scalar Casimir densities for a wedge with two cylindrical
boundaries
Source: ANNALS OF PHYSICS, 323 (7): 1588-1603 JUL 2008
Abstract: Wightman function, the vacuum expectation values of the field square and the energymomentum tensor are investigated for a massive scalar field with general curvature coupling
parameter inside a wedge with two coaxial cylindrical boundaries. It is assumed that the field
obeys Dirichlet boundary condition on bounding surfaces. The application of a variant of the
generalized Abel-Plana formula enables to extract from the expectation values the contribution
corresponding to the geometry of a wedge with a single shell and to present the interference part
in terms of exponentially convergent integrals. The local properties of the vacuum are
investigated in various asymptotic regions of the parameters. The vacuum forces acting on the
boundaries are presented as the sum of self-action and interaction terms. It is shown that the
interaction forces between the separate parts of the boundary are always attractive. The
generalization to the case of a scalar field with Neumann boundary condition is discussed. (C)
2008 Elsevier Inc. All rights reserved.
ISSN: 0003-4916
DOI: 10.1016/j.aop.2008.03.001
Record 128 of 499
Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); del Pozo, EDC (De Cea del Pozo, E.); de
los Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.); De
(Hayashida, M.); Herrero, A (Herrero, A.); Hohne, D (Hohne, D.); Hose, J (Hose, J.); Hsu, CC
(Hsu, C. C.); Huber, S (Huber, S.); Jogler, T (Jogler, T.); Kneiske, TM (Kneiske, T. M.);
Kranich, D (Kranich, D.); La Barbera, A (La Barbera, A.); Laille, A (Laille, A.); Leonardo, E
(Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Maraschi, L
(Maraschi, L.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.);
A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Otte, N (Otte, N.);
Oya, I (Oya, I.); Panniello, M (Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J.
M.); Pasanen, M (Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, RG (Pegna,
R. G.); Perez-Torres, MA (Perez-Torres, M. A.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo,
L.); Piccioli, A (Piccioli, A.); Prada, F (Prada, F.); Prandini, E (Prandini, E.); Puchades, N
(Puchades, N.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J
(Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A
(Saggion, A.); Saito, TY (Saito, T. Y.); Salvati, M (Salvati, M.); Sanchez-Conde, M (SanchezConde, M.); Sartori, P (Sartori, P.); Satalecka, K (Satalecka, K.); Scalzotto, V (Scalzotto, V.);
Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer, T.); Shayduk, M
(Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N (Sidro, N.);
Sierpowska-Bartosik, A (Sierpowska-Bartosik, A.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D
(Sobczynska, D.); Spanier, F (Spanier, F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.);
Takalo, L (Takalo, L.); Tavecchio, F (Tavecchio, F.); Temnikov, P (Temnikov, P.); Tescaro, D
(Tescaro, D.); Teshima, M (Teshima, M.); Tluczykont, M (Tluczykont, M.); Torres, DF (Torres,
D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V
(Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zabalza, V (Zabalza, V.);
Title: Very-high-energy gamma rays from a distant quasar: How transparent is the universe?
Source: SCIENCE, 320 (5884): 1752-1754 JUN 27 2008
Abstract: The atmospheric Cherenkov gamma- ray telescope MAGIC, designed for a lowenergy threshold, has detected very- high- energy gamma rays from a giant flare of the distant
Quasi- Stellar Radio Source ( in short: radio quasar) 3C 279, at a distance of more than 5 billion
light- years ( a redshift of 0.536). No quasar has been observed previously in very- high- energy
gamma radiation, and this is also the most distant object detected emitting gamma rays above 50
gigaelectron volts. Because high- energy gamma rays may be stopped by interacting with the
diffuse background light in the universe, the observations by MAGIC imply a low amount for
such light, consistent with that known from galaxy counts.
ISSN: 0036-8075
DOI: 10.1126/science.1157087
Record 129 of 499
Author(s): Apyan, A (Apyan, A.); Avakian, RO (Avakian, R. O.); Badelek, B (Badelek, B.);
Ballestrero, S (Ballestrero, S.); Biino, C (Biino, C.); Birol, I (Birol, I.); Cenci, P (Cenci, P.);
Connell, SH (Connell, S. H.); Eichblatt, S (Eichblatt, S.); Fonseca, T (Fonseca, T.); Freund, A
(Freund, A.); Gorini, B (Gorini, B.); Groess, R (Groess, R.); Ispirian, K (Ispirian, K.); Ketel, TJ
(Ketel, T. J.); Kononets, YV (Kononets, Yu. V.); Lopez, A (Lopez, A.); Mangiarotti, A
(Mangiarotti, A.); van Rens, B (van Rens, B.); Sellschop, JPF (Sellschop, J. P. F.); Shieh, M
(Shieh, M.); Sona, P (Sona, P.); Strakhovenko, V (Strakhovenko, V.); Uggerhoj, E (Uggerhoj,
E.); Uggerhoj, UI (Uggerhoj, U. I.); Unel, G (Unel, G.); Velasco, M (Velasco, M.); Vilakazi, ZZ
(Vilakazi, Z. Z.); Wessely, O (Wessely, O.)
Title: Coherent bremsstrahlung, coherent pair production, birefringence, and polarimetry in the
20-170 GeV energy range using aligned crystals
Source: PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS, 11 (4):
Art. No. 041001 APR 2008
Abstract: The processes of coherent bremsstrahlung (CB) and coherent pair production (CPP)
based on aligned crystal targets have been studied in the energy range 20-170 GeV. The
experimental arrangement allowed for measurements of single photon properties of these
phenomena including their polarization dependences. This is significant as the theoretical
description of CB and CPP is an area of active debate and development. With the approach used
in this paper, both the measured cross sections and polarization observables are predicted very
well. This indicates a proper understanding of CB and CPP up to energies of 170 GeV.
Birefringence in CPP on aligned crystals is applied to determine the polarization parameters in
our measurements. New technologies for high-energy photon beam optics including phase plates
and polarimeters for linear and circular polarization are demonstrated in this experiment.
Coherent bremsstrahlung for the strings-on-strings (SOS) orientation yields a larger
enhancement for hard photons than CB for the channeling orientations of the crystal. Our
measurements and our calculations indicate low photon polarizations for the high-energy SOS
photons.
ISSN: 1098-4402
DOI: 10.1103/PhysRevSTAB.11.041001
Record 130 of 499
Author(s): Tagliaferri, G (Tagliaferri, G.); Foschini, L (Foschini, L.); Ghisellini, G (Ghisellini,
G.); Maraschi, L (Maraschi, L.); Tosti, G (Tosti, G.); Albert, J (Albert, J.); Aliu, E (Aliu, E.);
Anderhub, H (Anderhub, H.); Antoranz, P (Antoranz, P.); Baixeras, C (Baixeras, C.); Barrio, JA
Bednarek, W (Bednarek, W.); Bedyugin, A (Bedyugin, A.); Berger, K (Berger, K.); Bigongiari,
C (Bigongiari, C.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.); Bordas, P (Bordas, P.);
Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T (Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M
(Camara, M.); Carmona, E (Carmona, E.); Chilingarian, A (Chilingarian, A.); Coarasa, JA
Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); Dorner, D (Dorner, D.); Doro, M (Doro,
M.); Errando, M (Errando, M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez,
E (Fernandez, E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.);
Fuchs, M (Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R. J.);
Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Giller, M (Giller, M.); Goebel, F
(Goebel, F.); Hakobyan, D (Hakobyan, D.); Hayashida, M (Hayashida, M.); Hengstebeck, T
(Hengstebeck, T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Huber,
S (Huber, S.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R
(Kosyra, R.); Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors,
E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, M (Lopez, M.);
Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.); Mannheim, K
(Mannheim, K.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.);
Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda,
J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.); Moralejo, A (Moralejo, A.);
Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E
Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.);
Piccioli, A (Piccioli, A.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A
M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY
(Saito, T. Y.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V (Scalzotto, V.);
Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Tavecchio, F
M.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A
(Venturini, A.); Vitale, V (Vitale, V.); Wagner, RM (Wagner, R. M.); Wibig, T (Wibig, T.);
Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero,
J.)
Title: Simultaneous multiwavelength observations of the blazar 1ES 1959+650 at a low TeV
flux
Source: ASTROPHYSICAL JOURNAL, 679 (2): 1029-1039 JUN 1 2008
Abstract: We present the results from a multiwavelength campaign on the TeV blazar 1ES
1959+650, performed in 2006 May. Data from the optical, UV, soft- and hard-X-ray, and very
high energy (VHE) gamma-ray ( E > 100 GeV) bands were obtained with the Suzaku and Swift
satellites, the MAGIC telescope, and other ground-based facilities. The source spectral energy
distribution (SED), derived from Suzaku and MAGIC observations at the end of 2006 May,
shows the usual double hump shape, with the synchrotron peak at a higher flux level than the
Compton peak. With respect to historical values, during our campaign the source exhibited a
relatively high state in X-rays and optical, while in the VHE band it was at one of the lowest
level so far recorded. We also monitored the source for flux spectral variability on a time
window of 10 days in the optical-UVand X-ray bands and 7 days in the VHE band. The source
varies more in the X-ray than in the optical band, with the 2-10 keV X-ray flux varying by a
factor of similar to 2. The synchrotron peak is located in the X-ray band and moves to higher
energies as the source gets brighter, with the X-ray fluxes above it varying more rapidly than the
X-ray fluxes at lower energies. The variability behavior observed in the X-ray band cannot be
produced by emitting regions varying independently and suggests instead some sort of "standing
shock'' scenario. The overall SED is well represented by a homogeneous one-zone synchrotron
inverse Compton emission model, from which we derive physical parameters that are typical of
high-energy peaked blazars.
ISSN: 0004-637X
Record 131 of 499
Author(s): Muraki, Y (Muraki, Y.); Matsubara, Y (Matsubara, Y.); Masuda, S (Masuda, S.);
Sakakibara, S (Sakakibara, S.); Sako, T (Sako, T.); Watanabe, K (Watanabe, K.); Butikofer, R
(Buetikofer, R.); Fluckiger, EO (Flueckiger, E. O.); Chilingarian, A (Chilingarian, A.);
Hovsepyan, G (Hovsepyan, G.); Kakimoto, F (Kakimoto, F.); Terasawa, T (Terasawa, T.);
Tsunesada, Y (Tsunesada, Y.); Tokuno, H (Tokuno, H.); Velarde, A (Velarde, A.); Evenson, P
(Evenson, P.); Poirier, J (Poirier, J.); Sakai, T (Sakai, T.)
Title: Detection of high-energy solar neutrons and protons by ground level detectors on April 15,
2001
Source: ASTROPARTICLE PHYSICS, 29 (4): 229-242 MAY 2008
Abstract: In association with the large solar flare of April 15, 2001, the Chacaltaya neutron
monitor observed a 3.6 sigma enhancement of the counting rate between 13:51 and 14:15 UT.
Since the enhancement was observed beginning 11 min before the GLE, solar neutrons must be
involved in this enhancement. The integral energy spectrum of solar neutrons can be expressed
by a simple power law in energy with the index gamma = -3.0 +/- 1.0. On the other hand, an
integral energy spectrum of solar protons has been obtained in the energy range between 650
MeV and 12 GeV. The spectrum can also be expressed by a power law with the power index
gamma = -2.75 +/- 0.15. The flux of solar protons observed at Chacaltaya (at >= 12 GeV) was
already one order less than the flux of the galactic cosmic rays. It may be the first simultaneous
observation of the energy spectra of both high-energy protons and neutrons. Comparing the
Yohkoh soft X-ray telescope images with the observed particle time profiles, an interesting
picture of the particle acceleration mechanism has been deduced. (C) 2008 Elsevier B.V. All
rights reserved.
ISSN: 0927-6505
Record 132 of 499
Author(s): Subedi, R (Subedi, R.); Shneor, R (Shneor, R.); Monaghan, P (Monaghan, P.);
Anderson, BD (Anderson, B. D.); Aniol, K (Aniol, K.); Annand, J (Annand, J.); Arrington, J
(Arrington, J.); Benaoum, H (Benaoum, H.); Benmokhtar, F (Benmokhtar, F.); Boeglin, W
(Boeglin, W.); Chen, JP (Chen, J. -P.); Choi, S (Choi, Seonho); Cisbani, E (Cisbani, E.); Craver,
B (Craver, B.); Frullani, S (Frullani, S.); Garibaldi, F (Garibaldi, F.); Gilad, S (Gilad, S.);
Gilman, R (Gilman, R.); Glamazdin, O (Glamazdin, O.); Hansen, JO (Hansen, J. -O.);
Higinbotham, DW (Higinbotham, D. W.); Holmstrom, T (Holmstrom, T.); Ibrahim, H (Ibrahim,
H.); Igarashi, R (Igarashi, R.); de Jager, CW (de Jager, C. W.); Jans, E (Jans, E.); Jiang, X (Jiang,
X.); Kaufman, LJ (Kaufman, L. J.); Kelleher, A (Kelleher, A.); Kolarkar, A (Kolarkar, A.);
Kumbartzki, G (Kumbartzki, G.); LeRose, JJ (LeRose, J. J.); Lindgren, R (Lindgren, R.);
Liyanage, N (Liyanage, N.); Margaziotis, DJ (Margaziotis, D. J.); Markowitz, P (Markowitz, P.);
Marrone, S (Marrone, S.); Mazouz, M (Mazouz, M.); Meekins, D (Meekins, D.); Michaels, R
(Michaels, R.); Moffit, B (Moffit, B.); Perdrisat, CF (Perdrisat, C. F.); Piasetzky, E (Piasetzky,
E.); Potokar, M (Potokar, M.); Punjabi, V (Punjabi, V.); Qiang, Y (Qiang, Y.); Reinhold, J
(Reinhold, J.); Ron, G (Ron, G.); Rosner, G (Rosner, G.); Saha, A (Saha, A.); Sawatzky, B
(Sawatzky, B.); Shahinyan, A (Shahinyan, A.); Sirca, S (Sirca, S.); Slifer, K (Slifer, K.);
Solvignon, P (Solvignon, P.); Sulkosky, V (Sulkosky, V.); Urciuoli, GM (Urciuoli, G. M.);
Voutier, E (Voutier, E.); Watson, JW (Watson, J. W.); Weinstein, LB (Weinstein, L. B.);
Wojtsekhowski, B (Wojtsekhowski, B.); Wood, S (Wood, S.); Zheng, XC (Zheng, X. -C.); Zhu,
L (Zhu, L.)
Title: Probing cold dense nuclear matter
Source: SCIENCE, 320 (5882): 1476-1478 JUN 13 2008
Abstract: The protons and neutrons in a nucleus can form strongly correlated nucleon pairs.
Scattering experiments, in which a proton is knocked out of the nucleus with high-momentum
transfer and high missing momentum, show that in carbon-12 the neutron-proton pairs are nearly
20 times as prevalent as proton-proton pairs and, by inference, neutron-neutron pairs. This
difference between the types of pairs is due to the nature of the strong force and has implications
for understanding cold dense nuclear systems such as neutron stars.
ISSN: 0036-8075
DOI: 10.1126/science.1156675
Record 133 of 499
(Boisson, C.); Bolz, O (Bolz, O.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion,
E.); Brown, AM (Brown, A. M.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I
(Chadwick, P. M.); Chounet, LM (Chounet, L. -M.); Clapson, AC (Clapson, A. C.); Coignet, G
(Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Dalton, M (Dalton, M.);
Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Atai,
A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubois, F (Dubois, F.); Dubus,
G (Dubus, G.); Dyks, J (Dyks, J.); Egberts, K (Egberts, K.); Emmanoulopoulos, D
Funk, S (Funk, Seb.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
(Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.);
(Lamanna, G.); Latham, IJ (Latham, I. J.); Lemiere, A (Lemiere, A.); Lemoine-Goumard, M
(Lemoine-Goumard, M.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Martin, JM (Martin,
J. M.); Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Masterson,
C (Masterson, C.); Maurin, D (Maurin, D.); Maurin, G (Maurin, G.); McComb, TJL (McComb,
T. J. L.); Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); de Naurois, M (de Naurois, M.);
Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JP (Olive, J. -P.);
Wilhelmi, ED (Wilhelmi, E. de Ona); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.);
Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G
(Pelletier, G.); Petrucci, PO (Petrucci, P. -O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.);
Punch, M (Punch, M.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner,
SM (Rayner, S. M.); Reimer, O (Reimer, O.); Renaud, M (Renaud, M.); Ripken, J (Ripken, J.);
Rob, L (Rob, L.); Rolland, L (Rolland, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell,
G.); Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A
(Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, F (Schoeck, F.); Schroder, R
S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.);
(Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter,
C.); Vialle, JP (Vialle, J. P.); Vincent, P (Vincent, P.); Vivier, M (Vivier, M.); Voelk, HJ (Voelk,
H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA
Title: Discovery of very-high-energy gamma-ray emission from the vicinity of PSR J1913+1011
with HESS
Source: ASTRONOMY & ASTROPHYSICS, 484 (2): 435-440 JUN 2008
Abstract: The HESS experiment, an array of four Imaging Atmospheric Cherenkov Telescopes
with high sensitivity and large field-of-view, has been used to search for emitters of very-highenergy (VHE, > 100 GeV) gamma-rays along the Galactic plane, covering the region 30 degrees
< l < 60 degrees, 280 degrees < l < 330 degrees, and -3 degrees < b < 3 degrees. In this
continuation of the HESS Galactic Plane Scan, a new extended VHE gamma-ray source was
discovered at alpha(2000)= 19(h)12(m)49(s), delta(2000)=+ 10 degrees 09' 06 ''( HESS
J1912+101). Its integral flux between 1-10 TeV is similar to 10% of the Crab Nebula flux in the
same energy range. The measured energy spectrum can be described by a power law dN/dE
similar to E-Gamma with a photon index Gamma = 2.7 +/- 0.2(stat) +/- 0.3sys. HESS J1912+101
is plausibly associated with the high spin-down luminosity pulsar PSR J1913+1011. We also
discuss associations with an as yet unconfirmed SNR candidate proposed from low frequency
radio observation and/or with molecular clouds found in (CO)-C-13 data.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078715
Record 134 of 499
Author(s): Hashimoto, O (Hashimoto, O.); Nakamura, SN (Nakamura, S. N.); Acha, A (Acha,
A.); Ahmidouch, A (Ahmidouch, A.); Androic, D (Androic, D.); Asaturyan, A (Asaturyan, A.);
Asaturyan, R (Asaturyan, R.); Baker, OK (Baker, O. K.); Baturin, P (Baturin, P.); Benmokhtar, F
(Benmokhtar, F.); Bosted, P (Bosted, P.); Carlini, R (Carlini, R.); Chen, X (Chen, X.); Christy,
M (Christy, M.); Cole, L (Cole, L.); Danagoulian, S (Danagoulian, S.); Daniel, A (Daniel, A.);
Dharmawardane, V (Dharmawardane, V.); Egiyan, K (Egiyan, K.); Elaasar, M (Elaasar, M.);
Ent, R (Ent, R.); Fenker, H (Fenker, H.); Fujii, Y (Fujii, Y.); Furic, M (Furic, M.); Gan, L (Gan,
L.); Gaskell, D (Gaskell, D.); Gasparian, A (Gasparian, A.); Gibson, EF (Gibson, E. F.); Gueye,
P (Gueye, P.); Halkyard, R (Halkyard, R.); Honda, D (Honda, D.); Horn, T (Horn, T.); Hu, B
(Hu, B.); Hu, S (Hu, S.); Hungerford, EV (Hungerford, Ed V.); Ispiryan, M (Ispiryan, M.);
Johnston, K (Johnston, K.); Jones, M (Jones, M.); Kalantarians, N (Kalantarians, N.); Kaneta, M
(Kaneta, M.); Kato, F (Kato, F.); Kato, S (Kato, S.); Kawama, D (Kawama, D.); Keppel, C
(Keppel, C.); Li, Y (Li, Y.); Luo, W (Luo, W.); Mack, D (Mack, D.); Margaryan, A (Margaryan,
A.); Marikyan, G (Marikyan, G.); Maruyama, N (Maruyama, N.); Matsumura, A (Matsumura,
A.); Miyoshi, T (Miyoshi, T.); Mkrtchyan, A (Mkrtchyan, A.); Mkrtchyan, H (Mkrtchyan, H.);
Navasardyan, T (Navasardyan, T.); Niculescu, G (Niculescu, G.); Niculescu, MI (Niculescu, M.
-I.); Nomura, H (Nomura, H.); Nonaka, K (Nonaka, K.); Ohtani, A (Ohtani, A.); Okayasu, Y
(Okayasu, Y.); Pamela, P (Pamela, P.); Perez, N (Perez, N.); Petkovic, T (Petkovic, T.);
Randeniya, S (Randeniya, S.); Reinhold, J (Reinhold, J.); Rivera, R (Rivera, R.); Roche, J
(Roche, J.); Rodriguez, VM (Rodriguez, V. M.); Sato, Y (Sato, Y.); Seva, T (Seva, T.); Tang, L
(Tang, L.); Simicevic, N (Simicevic, N.); Smith, G (Smith, G.); Sumihama, M (Sumihama, M.);
Song, Y (Song, Y.); Tadevosyan, V (Tadevosyan, V.); Takahashi, T (Takahashi, T.); Tamura, H
(Tamura, H.); Tvaskis, V (Tvaskis, V.); Vulcan, W (Vulcan, W.); Wang, B (Wang, B.); Wells, S
(Wells, S.); Wood, S (Wood, S.); Yan, C (Yan, C.); Yuan, L (Yuan, L.); Zamkochian, S
(Zamkochian, S.)
Title: Hypernuclear spectroscopy program at JLab Hall C
Source: NUCLEAR PHYSICS A, 804: 125-138 MAY 15 2008
Abstract: Hypernuclear production by the (e, e'K+) reaction has unique advantages in
hypernuclear spectroscopy of the S = -1 regime. The second-generation spectroscopy experiment
on C-12, Li-7 and Si-21 targets has been recently carried out at JLab Hall C with a new
experimental configuration (Tilt method) and also using a new high-resolution kaon
spectrometer (HKS). The experiment is described and preliminary results are presented together
with the empasis of significance of the (e, e' K+) reaction for A hypernuclear spectroscopy and
its future prospects. (c) 2008 Elsevier B.V. All rights reserved.
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2008.01.029
Record 135 of 499
Author(s): Gevorkian, ZS (Gevorkian, Zh. S.); Verhoeven, J (Verhoeven, J.)
Title: Comment on the paper "Radiation induced by relativistic electrons propagating through
random layered stacks: Numerical simulation results" by Varfolomeev et al. [Nucl. Instr. and
Meth. B 256 (2007) 705]
Source: NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION BBEAM INTERACTIONS WITH MATERIALS AND ATOMS, 266 (7): 1137-1138 APR 2008
Abstract: We show that the numerical code used in the above mentioned paper does not take
into account the multiple scattering effects of electromagnetic fields properly and is, therefore,
incorrect. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0168-583X
DOI: 10.1016/j.nimb.2007.12.060
Record 136 of 499
Author(s): Amatuni, GA (Amatuni, G. A.); Gevorkyan, AS (Gevorkyan, A. S.); Gevorkian, SG
(Gevorkian, S. G.); Hakobyan, AA (Hakobyan, A. A.); Oganesyan, KB (Oganesyan, K. B.);
Saakyan, VA (Saakyan, V. A.); Sarkisyan, EM (Sarkisyan, E. M.)
Title: Dielectric permittivity superlattice formation
Source: LASER PHYSICS, 18 (5): 608-620 MAY 2008
Abstract: A dielectric medium consisting of roughly polarized molecules has been treated as a
3D disordered spin system (spin glass). Having in view the study of the statistical properties of
this system on a micrometer scale and nanosecond time scale of a standing electromagnetic
wave, a microscopic approach has been developed. Using the Birkhoff ergodic hypothesis, the
initial 3D spin problem is reduced to two conditionally separate 1D problems along the external
electromagnetic field propagation. The first problem describes a disordered N-particle quantum
system with relaxation in the framework of a Langevin-Schrodinger (L-Sch)-type equation,
while the second one describes a steric disordered spin-chain system. The statistical properties of
both systems were investigated in detail. Based on these constructions, the coefficient of
polarizability related to the collective orientational effects was calculated. The Clausius-Mossotti
relation for the dielectric constant was generalized. Taking into account the generalized
Clausius-Mossotti relation, a generalized equation for the dielectric permittivity function has
been found. A simple formula was derived for the dielectric permittivity function in the X-ray
frequency range, which can be larger than unity on the micrometer scale and nanosecond time
scale.
ISSN: 1054-660X
DOI: 10.1134/S1054660X08050101
Record 137 of 499
Author(s): Sarkisyan, EM (Sarkisyan, E. M.); Petrosyan, KG (Petrosyan, K. G.); Oganesyan,
KB (Oganesyan, K. B.); Hakobyan, AA (Hakobyan, A. A.); Saakyan, VA (Saakyan, V. A.);
Gevorkian, SG (Gevorkian, S. G.); Izmailyan, NS (Izmailyan, N. Sh.); Hu, CK (Hu, C. K.)
Title: Detection of Casimir photons with electrons
Source: LASER PHYSICS, 18 (5): 621-624 MAY 2008
Abstract: We propose a method for the detection of a dynamical Casimir effect. Assuming that
the Casimir photons are being generated in an electromagnetic cavity with a vibrating wall
(dynamical Casimir effect), we consider electrons passing through the cavity to be interacting
with the intracavity field. We show that the dynamical Casimir effect can be observed via the
measurement of the change in the average or in the variance of the electron's kinetic energy. We
point out that the enhancement of the effect due to finite temperatures makes it easier to detect
the Casimir photons.
ISSN: 1054-660X
DOI: 10.1134/S1054660X08050113
Record 138 of 499
C.); Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Dalton,
M (Dalton, M.); Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A
(Djannati-Atai, A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O. C.); Dubois, F
Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. -F.); Gluck, B (Glueck, B.); Goret, P
(Katarzynski, K.); Kaufmann, S (Kaufmann, S.); Kendziorra, E (Kendziorra, E.); Kerschhaggl,
M (Kerschhaggl, M.); Khangulyan, D (Khangulyan, D.); Khelifi, B (Khelifi, B.); Keogh, D
(Keogh, D.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.);
Latham, IJ (Latham, I. J.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Martin, JM (Martin,
J. -M.); Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.);
Masterson, C (Masterson, C.); Maurin, D (Maurin, D.); McComb, TJL (McComb, T. J. L.);
Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); Naumann-Godo, M (Naumann-Godo, M.);
de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nekrassov, D (Nekrassov, D.); Nolan,
SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, ED (Wilhelmi, E. de
Ona); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.);
Panter, M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO
(Petrucci, P. -O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.);
Quirrenbach, A (Quirrenbach, A.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue,
M.); Rayner, SM (Rayner, S. M.); Renaud, M (Renaud, M.); Rieger, F (Rieger, F.); Ripken, J
(Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Rudak,
B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo,
A.); Schlickeiser, R (Schlickeiser, R.); Schock, FM (Schoeck, F. M.); Schroder, R (Schroeder,
R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg, S.); Schwemmer, S
(Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.);
(Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter,
C.); Vialle, JP (Vialle, J. -P.); Vincent, P (Vincent, P.); Vivier, M (Vivier, M.); Volk, HJ (Voelk,
H. J.); Volpe, F (Volpe, F.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.); Zdziarski, AA
Title: Discovery of VHE gamma-rays from the high-frequency-peaked BL lacertae object RGB
J0152+017
Source: ASTRONOMY & ASTROPHYSICS, 481 (3): L103-L107 APR 2008
Abstract: Aims. The BL Lac object RGBJ0152+017 (z = 0.080) was predicted to be a very
high-energy (VHE; > 100 GeV) gamma-ray source, due to its high X-ray and radio fluxes. Our
aim is to understand the radiative processes by investigating the observed emission and its
production mechanism using the High Energy Stereoscopic System (HESS) experiment.
Methods. We report recent observations of the BL Lac source RGBJ0152+017 made in late
October and November 2007 with the HESS array consisting of four imaging atmospheric
Cherenkov telescopes. Contemporaneous observations were made in X-rays by the Swift and
RXTE satellites, in the optical band with the ATOM telescope, and in the radio band with the
Nancay Radio Telescope.
Results. A signal of 173 gamma-ray photons corresponding to a statistical significance of 6.6
sigma was found in the data. The energy spectrum of the source can be described by a powerlaw
with a spectral index of G = 2.95 +/- 0.36(stat) +/- 0.20(syst). The integral flux above 300GeV
corresponds to similar to 2% of the flux of the Crab nebula. The source spectral energy
distribution (SED) can be described using a two-component non-thermal synchrotron selfCompton (SSC) leptonic model, except in the optical band, which is dominated by a thermal host
galaxy component. The parameters that are found are very close to those found in similar SSC
studies in TeV blazars.
Conclusions. RGBJ0152+017 is discovered as a source of VHE gamma-rays by HESS The
location of its synchrotron peak, as derived from the SED in Swift data, allows clear
classification as a high-frequency-peaked BL Lac (HBL).
ISSN: 0004-6361
DOI: 10.1051/0004-6361:200809603
Record 139 of 499
Author(s): Hovhannisyan, VV (Hovhannisyan, V. V.); Ananikian, NS (Ananikian, N. S.)
Title: Antiferromagnetic model and magnetization plateaus on the zigzag ladder with two- and
three-site exchanges
Source: PHYSICS LETTERS A, 372 (19): 3363-3368 MAY 5 2008
Abstract: The Ising approximation is proposed for the Heisenberg model with two- and threespin exchange interactions on a zigzag ladder placed in a strong magnetic field. Using the
transfer matrix technique the magnetization is calculated and compared with the results obtained
in the dynamical recursive approach. Magnetization plateaus are found at m = 0 and m = 1/3
with the two- and three-spin exchanges. The magnetic susceptibility in small and large zigzag
ladders for various exchange parameters and temperatures is also analyzed. As temperature
decreases the magnetic susceptibility versus magnetic field shows the formation of spin
pseudogaps and transformation from double to four peak structure. Small clusters also exhibit
characteristic features of large thermodynamic systems. (c) 2008 Elsevier B.V. All rights
reserved.
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2008.02.004
Record 140 of 499
Adams, M (Adams, M.); Akchurin, N (Akchurin, N.); Akgun, U (Akgun, U.); Anderson, EW
(Anderson, E. W.); Antchev, G (Antchev, G.); Ayan, S (Ayan, S.); Aydin, S (Aydin, S.);
Baarmand, M (Baarmand, M.); Baden, D (Baden, D.); Banerjee, S (Banerjee, Sud.); Banerjee, S
(Banerjee, Sun.); Bard, R (Bard, R.); Barnes, V (Barnes, V.); Bawa, H (Bawa, H.); Baiatian, G
(Baiatian, G.); Bencze, G (Bencze, G.); Beri, S (Beri, S.); Bhatnagar, V (Bhatnagar, V.); Bodek,
A (Bodek, A.); Budd, H (Budd, H.); Burchesky, K (Burchesky, K.); Camporesi, T (Camporesi,
T.); Cankocak, K (Cankocak, K.); Carrell, K (Carrell, K.); Chendvankar, S (Chendvankar, S.);
Chung, Y (Chung, Y.); Cremaldi, L (Cremaldi, L.); Cushman, P (Cushman, P.); Damgov, J
(Damgov, J.); de Barbaro, P (de Barbaro, P.); Demianov, A (Demianov, A.); de Visser, T (de
Visser, T.); Dimitrov, L (Dimitrov, L.); Dugad, S (Dugad, S.); Dumanoglu, I (Dumanoglu, I.);
Duru, F (Duru, F.); Elias, J (Elias, J.); Elvira, D (Elvira, D.); Emeliantchik, I (Emeliantchik, I.);
Eno, S (Eno, S.); Ershov, A (Ershov, A.); Eskut, E (Eskut, E.); Fisher, W (Fisher, W.); Freeman,
J (Freeman, J.); Gavrilov, V (Gavrilov, V.); Genchev, V (Genchev, V.); Gershtein, Y (Gershtein,
Y.); Golutvin, I (Golutvin, I.); Goncharov, P (Goncharov, P.); Grassi, T (Grassi, T.); Green, D
(Green, D.); Gribushin, A (Gribushin, A.); Grinev, B (Grinev, B.); Gulmez, E (Guelmez, E.);
Gumus, K (Gumus, K.); Haelen, T (Haelen, T.); Hagopian, S (Hagopian, S.); Hagopian, V
(Hagopian, V.); Hauptman, J (Hauptman, J.); Hazen, E (Hazen, E.); Heering, A (Heering, A.);
Imboden, M (Imboden, M.); Isiksal, E (Isiksal, E.); Jarvis, C (Jarvis, C.); Johnson, K (Johnson,
K.); Kaftanov, V (Kaftanov, V.); Kalagin, V (Kalagin, V.); Karmgard, D (Karmgard, D.);
Kalmani, S (Kalmani, S.); Katta, S (Katta, S.); Kaur, M (Kaur, M.); Kaya, M (Kaya, M.); KayisTopaksu, A (Kayis-Topaksu, A.); Kellogg, R (Kellogg, R.); Khmelnikov, A (Khmelnikov, A.);
Kisselevich, I (Kisselevich, I.); Kodolova, O (Kodolova, O.); Kohli, J (Kohli, J.); Kolossov, V
(Kolossov, V.); Korablev, A (Korablev, A.); Korneev, Y (Korneev, Y.); Kosarev, I (Kosarev, I.);
Krinitsyn, A (Krinitsyn, A.); Krokhotin, A (Krokhotin, A.); Kryshkin, V (Kryshkin, V.);
Kuleshov, S (Kuleshov, S.); Kumar, A (Kumar, A.); Kunori, S (Kunori, S.); Polatoz, A (Polatoz,
A.); Laasanen, A (Laasanen, A.); Lawlor, C (Lawlor, C.); Lazic, D (Lazic, D.); Levchuk, L
(Levchuk, L.); Litvintsev, D (Litvintsev, D.); Litov, L (Litov, L.); Los, S (Los, S.); Lubinsky, V
(Lubinsky, V.); Lukanin, V (Lukanin, V.); Machado, E (Machado, E.); Mans, J (Mans, J.);
Massolov, V (Massolov, V.); Mazumdar, K (Mazumdar, K.); Merlo, JP (Merlo, J. P.);
Mescheryakov, G (Mescheryakov, G.); Mestvirishvili, A (Mestvirishvili, A.); Miller, M (Miller,
M.); Mondal, N (Mondal, N.); Nagaraj, P (Nagaraj, P.); Norbeck, E (Norbeck, E.); O'Dell, V
(O'Dell, V.); Olson, J (Olson, J.); Onel, Y (Onel, Y.); Onengut, G (Onengut, G.); Ozdes-Koca, N
(Ozdes-Koca, N.); Ozkorucuklu, S (Ozkorucuklu, S.); Ozok, F (Ozok, F.); Paktinat, S (Paktinat,
S.); Patil, M (Patil, M.); Petrushanko, S (Petrushanko, S.); Pikalov, V (Pikalov, V.); Piperov, S
(Piperov, S.); Podrasky, V (Podrasky, V.); Pompos, A (Pompos, A.); Posch, C (Posch, C.); Qian,
W (Qian, W.); Ralich, R (Ralich, R.); Reddy, L (Reddy, L.); Reidy, J (Reidy, J.); Ruchti, R
(Ruchti, R.); Rohlf, J (Rohlf, J.); Ronzhin, A (Ronzhin, A.); Ryazanov, A (Ryazanov, A.);
Sanders, DA (Sanders, D. A.); Sanzeni, C (Sanzeni, C.); Sarycheva, L (Sarycheva, L.);
Satyanarayana, B (Satyanarayana, B.); Schmidt, I (Schmidt, I.); Senchishin, V (Senchishin, V.);
Sergeyev, S (Sergeyev, S.); Serin-Zeyrek, M (Serin-Zeyrek, M.); Sever, R (Sever, R.); Singh, J
(Singh, J.); Sirunyan, A (Sirunyan, A.); Skuja, A (Skuja, A.); Sherwood, B (Sherwood, B.);
Shumeiko, N (Shumeiko, N.); Smirnov, V (Smirnov, V.); Sorokin, P (Sorokin, P.); Stefanovich,
R (Stefanovich, R.); Stolin, V (Stolin, V.); Sudhakar, K (Sudhakar, K.); Suzuki, I (Suzuki, I.);
Talov, V (Talov, V.); Thomas, R (Thomas, R.); Tully, C (Tully, C.); Turchanovich, L
(Turchanovich, L.); Ulyanov, A (Ulyanov, A.); Vankov, I (Vankov, I.); Vardanyan, I
(Vardanyan, I.); Verma, P (Verma, P.); Vesztergombi, G (Vesztergombi, G.); Vidal, R (Vidal,
R.); Vlassov, E (Vlassov, E.); Vodopiyanov, I (Vodopiyanov, I.); Volkov, A (Volkov, A.);
Volodko, A (Volodko, A.); Winn, D (Winn, D.); Whitmore, J (Whitmore, J.); Wu, SX (Wu, S.
X.); Zalan, P (Zalan, P.); Zarubin, A (Zarubin, A.); Zeyrek, M (Zeyrek, M.)
Group Author(s): CMS-HCAL Collaboration
Title: Design, performance, and calibration of CMS hadron-barrel calorimeter wedges
Source: EUROPEAN PHYSICAL JOURNAL C, 55 (1): 159-171 MAY 2008
Abstract: Extensive measurements have been made with pions, electrons and muons on four
production wedges of the compact muon solenoid (CMS) hadron barrel (HB) calorimeter in the
H2 beam line at CERN with particle momenta varying from 20 to 300 GeV/c. The time structure
of the events was measured with the full chain of preproduction front-end electronics running at
34 MHz. Moving-wire radioactive source data were also collected for all scintillator layers in the
HB. The energy dependent time slewing effect was measured and tuned for optimal
performance.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0573-y
Record 141 of 499
(Antoranz, P.); Backes, M (Backes, M.); Baixeras, C (Baixeras, C.); Barrio, JA (Barrio, J. A.);
Bock, RK (Bock, R. K.); Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T
(Bretz, T.); Britvitch, I (Britvitch, I.); Camara, M (Camara, M.); Carmona, E (Carmona, E.);
Chilingarian, A (Chilingarian, A.); Commichau, S (Commichau, S.); Contreras, JL (Contreras, J.
L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.); Curtef, V (Curtef, V.); Danielyan, V
(Danielyan, V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C (Delgado,
C.); de los Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); De Maria, M (De Maria, M.);
De Sabata, F (De Sabata, F.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M
(Errando, M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez,
E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Fuchs, M (Fuchs,
M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R. J.); Garczarczyk, M
(Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F (Goebel, F.); Hakobyan, D (Hakobyan, D.);
Hayashida, M (Hayashida, M.); Hengstebeck, T (Hengstebeck, T.); Herrero, A (Herrero, A.);
Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Huber, S (Huber, S.); Hsu, CC (Hsu, C. C.); Jacon, P
(Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.); Laille, A
(Laille, A.); Lindfors, E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.);
(Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K (Mannheim, K.); Mariotti, M
(Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C (Merck, C.);
A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E
Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Perez-Torres, MA (Perez-Torres, M. A.); Persic, M
(Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prada, F (Prada, F.); Prandini, E
(Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.);
Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.); Rugamer, S
(Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY (Saito, T. Y.); Sanchez, A (Sanchez, A.);
Sanchez-Conde, M (Sanchez-Conde, M.); Sartori, P (Sartori, P.); Scalzotto, V (Scalzotto, V.);
F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Venturini, A (Venturini, A.); Vitale, V
(Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.);
Title: Upper limit for gamma-ray emission above 140 GeV from the dwarf spheroidal galaxy
Draco
Source: ASTROPHYSICAL JOURNAL, 679 (1): 428-431 MAY 20 2008
Abstract: The nearby dwarf spheroidal galaxy Draco, with its high mass to light ratio, is one of
the most auspicious targets for indirect dark matter (DM) searches. Annihilation of hypothetical
DM particles can result in high-energy gamma-rays, e. g., from neutralino annihilation in the
supersymmetric framework. A search for a possible DM signal originating from Draco was
performed with the MAGIC telescope during 2007. Analysis of the data results in a flux upper
limit (2 sigma) of 1.1 x 10(-11) photons cm(-2) s(-1) for photon energies above 140 GeV,
assuming a pointlike source. A comparison with predictions from supersymmetric models is also
given. While our results do not constrain the mSUGRA phase parameter space, a very high flux
enhancement can be ruled out.
ISSN: 0004-637X
Record 142 of 499
Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
A.); De Jager, OC (De Jager, O. C.); Jung, I (Jung, I.); Katarzynski, K (Katarzynski, K.);
Moulin, E (Moulin, E.); Naumann-Godo, M (Naumann-Godo, M.); De Naurois, M (De Naurois,
(Ohm, S.); Olive, JP (Olive, J. -P.); Wilhelmi, ED (Wilhelmi, E. de Ona); Orford, KJ (Orford, K.
J.); Osborne, JL (Osborne, J. L.); Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M.);
(Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Raubenheimer, BC
M.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G
S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D
(Spangler, D.); Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp, R.); Stegmann, C
(Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J. P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Title: Exploring a SNR/molecular cloud association within HESS J1745-303
Source: ASTRONOMY & ASTROPHYSICS, 483 (2): 509-517 MAY 2008
Abstract: Aims. HESS J1745-303 is an extended, unidentified VHE (very high energy) gammaray source discovered using HESS in the Galactic Plane Survey. Since no obvious counterpart
has previously been found in longer-wavelength data, the processes that power the VHE
emission are not well understood.
Methods. Combining the latest VHE data with recent XMM-Newton observations and a variety
of source catalogs and lower-energy survey data, we attempt to match (from an energetic and
positional standpoint) the various parts of the emission of HESS J1745-303 with possible
candidates.
Results. Though no single counterpart is found to fully explain the VHE emission, we postulate
that at least a fraction of the VHE source may be explained by a supernova-remnant/molecularcloud association and/or a high-spin-down-flux pulsar.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20079230
Record 143 of 499
Author(s): Allahverdyan, AE (Allahverdyan, Armen E.); Johal, RS (Johal, Ramandeep S.);
Mahler, G (Mahler, Guenter)
Title: Work extremum principle: Structure and function of quantum heat engines
Source: PHYSICAL REVIEW E, 77 (4): Art. No. 041118 Part 1 APR 2008
Abstract: We consider a class of quantum heat engines consisting of two subsystems interacting
with a work-source and coupled to two separate baths at different temperatures T-h > T-c. The
purpose of the engine is to extract work due to the temperature difference. Its dynamics is not
restricted to the near equilibrium regime. The engine structure is determined by maximizing the
extracted work under various constraints. When this maximization is carried out at finite power,
the engine dynamics is described by well-defined temperatures and satisfies the local version of
the second law. In addition, its efficiency is bounded from below by the Curzon-Ahlborn value
1-root T-c/T-h and from above by the Carnot value 1-(T-c/T-h). The latter is reached - at finite
power - for a macroscopic engine, while the former is achieved in the equilibrium limit Th. Tc.
The efficiency that maximizes the power is strictly larger than the Curzon-Ahloborn value.
When the work is maximized at a zero power, even a small (few-level) engine extracts work
right at the Carnot efficiency.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.77.041118
Record 144 of 499
Author(s): Manvelyan, R (Manvelyan, Ruben); Ruhl, W (Ruehl, Werner)
Title: The generalized curvature and Christoffel symbols for a higher spin potential in AdSd+1
space
Source: NUCLEAR PHYSICS B, 797 (3): 371-394 JUL 11 2008
Abstract: The generalized curvature tensor and Christoffel symbols are determined in AdS(d+l)
background by a modified ansatz of the de Wit-Freedman type by imposing gauge invariance.
The resulting set of recurrence relations and difference equations is solved. The Riernann
curvature tensor is derived by antisymnmetrization. All results are presented as finite power
series in the inverse AdS radius and are unique. The fourth order, which is complete for fields up
to spin five, is calculated explicitly. Higher orders can be obtained with the same method. (C)
2007 Elsevier B.V. All rights reserved.
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2007.10.012
Record 145 of 499
Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.); Domingo-Santamaria, E (DomingoSantamaria, E.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M (Errando, M.);
(Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R. J.); Garczarczyk, M
T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Huber, S (Huber, S.);
Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.);
Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E (Lindfors,
E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez, M (Lopez,
M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.); Mannheim,
K (Mannheim, K.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin,
D.); Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM
(Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.); Moralejo, A
(Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); OnaWilhelmi, E (Ona-Wilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Panniello, M (Panniello,
M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen, M.); Pascoli,
D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M (Persic, M.); Peruzzo, L
(Peruzzo, L.); Piccioli, A (Piccioli, A.); Puchades, N (Puchades, N.); Prandini, E (Prandini, E.);
Saito, TY (Saito, T. Y.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V
(Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer, T.);
Shayduk, M (Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N
(Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Spanier, F (Spanier,
F.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Temnikov, P
(Vitale, V.); Wagner, RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.);
Title: Implementation of the Random Forest method for the Imaging Atmospheric Cherenkov
Telescope MAGIC
588 (3): 424-432 APR 11 2008
Abstract: The paper describes an application of the tree classification method Random Forest
(RF), as used in the analysis of data from the ground-based gamma telescope MAGIC. In such
telescopes, cosmic gamma-rays are observed and have to be discriminated against a dominating
background of hadronic cosmic-ray particles. We describe the application of RF for this
gamma/hadron separation. The RF method often shows superior performance in comparison
with traditional semi-empirical techniques. Critical issues of the method and its implementation
are discussed. An application of the RF method for estimation of a continuous parameter from
related variables, rather than discrete classes, is also discussed. (C) 2008 Published by Elsevier
B.V.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2007.11.068
Record 146 of 499
Title: Two temperature description of RNA-LIKE polymer
Source: MODERN PHYSICS LETTERS B, 22 (10): 785-790 APR 20 2008
Abstract: The two-temperature description of the RNA-like molecule is invented. Instead of
equilibrium treatment of the polymer state, the steady state viewpoint is proposed. The molecule
is considered as being in an adiabatic steady state, which is a non-equilibrium one. The general
approach to the molecule in such a steady state is discussed and the simple model with saturating
bonds is considered. The relation between mean square end-to-end distance and the number of
monomers is derived for the simple system under condition T > Theta. The obtained relation
depends on additional so-called disorder temperature.
ISSN: 0217-9849
Record 147 of 499
Author(s): Allahverdyan, AE (Allahverdyan, Armen E.); Janzing, D (Janzing, Dominik)
Title: Relating the thermodynamic arrow of time to the causal arrow
Source: JOURNAL OF STATISTICAL MECHANICS-THEORY AND EXPERIMENT: Art.
No. P04001 APR 2008
Abstract: Consider a Hamiltonian system that consists of a slow subsystem S and a fast
subsystem F. The autonomous dynamics of S is driven by an effective Hamiltonian, but its
thermodynamics is unexpected. We show that a well-defined thermodynamic arrow of time
(second law) emerges for S whenever there is a well-defined causal arrow from S to F and the
back-action is negligible. This is because the back-action of F on S is described by a nonglobally Hamiltonian Born Oppenheimer term that violates the Liouville theorem, and makes the
second law inapplicable to S. If S and F are mixing, under the causal arrow condition they are
described by microcanonical distributions P(S) and P(S|F). Their structure supports a causal
inference principle proposed recently in machine learning.
ISSN: 1742-5468
DOI: 10.1088/1742-5468/2008/04/P04001
Record 148 of 499
Author(s): Babujian, HM (Babujian, H. M.); Foerster, A (Foerster, A.); Karowski, M
(Karowski, M.)
Title: The form factor program: A review and new results, the nested SU(N) off-shell Bethe
ansatz and the 1/N expansion
Source: THEORETICAL AND MATHEMATICAL PHYSICS, 155 (1): 512-522 APR 2008
Abstract: The purpose of the "bootstrap program" for integrable quantum field theories in 1+1
dimensions is to construct a model explicitly in terms of its Wightman functions. We illustrate
this program here mainly in terms of the SU(N) Gross-Neveu model. We construct the nested
off-shell Bethe ansatz for an SU(N) factoring S-matrix and consider the problem of how to sum
over intermediate states in the short-distance limit of the two-point Wightman function for the
sinh-Gordon model.
ISSN: 0040-5779
Record 149 of 499
Author(s): Nersessian, AP (Nersessian, A. P.); Ohanyan, VR (Ohanyan, V. R.)
Title: Multicenter MICZ-Kepler systems
Source: THEORETICAL AND MATHEMATICAL PHYSICS, 155 (1): 618-626 APR 2008
Abstract: We obtain the classical solutions of the two-center MICZ-Kepler and MICZ-KeplerStark problems. We then suggest a model of the multicenter MICZ-Kepler system on an arbitrary
conformally flat spherically symmetric three-dimensional space.
ISSN: 0040-5779
Record 150 of 499
Author(s): Girod, FX (Girod, F. X.); Niyazov, RA (Niyazov, R. A.); Avakian, H (Avakian, H.);
Ball, J (Ball, J.); Bedlinskiy, I (Bedlinskiy, I.); Burkert, VD (Burkert, V. D.); De Masi, R (De
Masi, R.); Elouadrhiri, L (Elouadrhiri, L.); Garcon, M (Garcon, M.); Guidal, M (Guidal, M.); Jo,
HS (Jo, H. S.); Joo, K (Joo, K.); Kubarovsky, V (Kubarovsky, V.); Kuleshov, SV (Kuleshov, S.
V.); MacCormick, M (MacCormick, M.); Niccolai, S (Niccolai, S.); Pogorelko, O (Pogorelko,
O.); Sabatie, F (Sabatie, F.); Stepanyan, S (Stepanyan, S.); Stoler, P (Stoler, P.); Ungaro, M
(Ungaro, M.); Zhao, B (Zhao, B.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P
(Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan, G.); Bagdasaryan, H
(Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.);
Batourine, V (Batourine, V.); Battaglieri, M (Battaglieri, M.); Bellis, M (Bellis, M.); Benmouna,
N (Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.); Blaszczyk, L
(Blaszczyk, L.); Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R
W. K.); Bultmann, S (Bultmann, S.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.);
Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Chen, S
(Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P
(Coltharp, P.); Crabb, D (Crabb, D.); Crede, V (Crede, V.); Dashyan, N (Dashyan, N.); De
Sanctis, E (De Sanctis, E.); De Vita, R (De Vita, R.); Degtyarenko, PV (Degtyarenko, P. V.);
Deur, A (Deur, A.); Dharmawardane, KV (Dharmawardane, K. V.); Dickson, R (Dickson, R.);
Djalali, C (Djalali, C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D
(Doughty, D.); Dugger, M (Dugger, M.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan,
H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.); Eugenio, P (Eugenio, P.); Fedotov, G
(Fedotov, G.); Feldman, G (Feldman, G.); Funsten, H (Funsten, H.); Gavalian, G (Gavalian, G.);
Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Goetz, JT (Goetz, J. T.);
Gonenc, A (Gonenc, A.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.); Guler, N
(Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hafidi, K (Hafidi, K.); Hakobyan, H
(Hakobyan, H.); Hanretty, C (Hanretty, C.); Hersman, FW (Hersman, F. W.); Hicks, K (Hicks,
K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde, CE (Hyde, C. E.); Ilieva, Y
(Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL (Isupov,
E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins, D.); Johnstone, JR (Johnstone, J. R.); Juengst,
HG (Juengst, H. G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M
(Khandaker, M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko,
AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L.
H.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J.
M.); Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Lee, T (Lee, T.);
Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); Markov, N (Markov, N.); Mattione, P
(Mattione, P.); Mazouz, M (Mazouz, M.); McKinnon, B (McKinnon, B.); Mecking, BA
(Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe,
T.); Michel, B (Michel, B.); Mikhailov, K (Mikhailov, K.); Mirazita, M (Mirazita, M.);
Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Moriya, K (Moriya, K.); Morrow, SA
(Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Munevar, E (Munevar, E.); Mutchler, GS
Niroula, MR (Niroula, M. R.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.); Ostrovidov,
AI (Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.);
Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D
(Pocanic, D.); Pozdniakov, S (Pozdniakov, S.); Price, JW (Price, J. W.); Procureur, S (Procureur,
S.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.); Ricco, G
(Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Rosner, G (Rosner, G.); Rossi,
P (Rossi, P.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J.
P.); Sapunenko, V (Sapunenko, V.); Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov,
V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov,
N. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D
(Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stokes, BE
(Stokes, B. E.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.);
Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.);
Tur, C (Tur, C.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Voutier, E
(Voutier, E.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.); Weygand, DP
H.); Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, ZW
(Zhao, Z. W.)
Title: Measurement of deeply virtual compton scattering beam-spin asymmetries
Source: PHYSICAL REVIEW LETTERS, 100 (16): Art. No. 162002 APR 25 2008
Abstract: The beam-spin asymmetries in the hard exclusive electroproduction of photons on the
proton (e(->)p -> ep gamma) were measured over a wide kinematic range and with high
statistical accuracy. These asymmetries result from the interference of the Bethe-Heitler process
and of deeply virtual Compton scattering. Over the whole kinematic range (x(B) from 0.11 to
0.58, Q(2) from 1 to 4.8 GeV2, -t from 0.09 to 1.8 GeV2), the azimuthal dependence of the
asymmetries is compatible with expectations from leading-twist dominance, A similar or equal
to a sin phi/(1+c cos phi). This extensive set of data can thus be used to constrain significantly
the generalized parton distributions of the nucleon in the valence quark sector.
ISSN: 0031-9007
Record 151 of 499
Author(s): De Masi, R (De Masi, R.); Garcon, M (Garcon, M.); Zhao, B (Zhao, B.); Amaryan,
MJ (Amaryan, M. J.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.);
N (Baillie, N.); Ball, J (Ball, J.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Batourine,
V (Batourine, V.); Battaglieri, M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bellis, M
(Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Bertin, P (Bertin, P.);
Biselli, AS (Biselli, A. S.); Blaszczyk, L (Blaszczyk, L.); Bouchigny, S (Bouchigny, S.);
WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.); Bultmann, S (Bultmann, S.); Burkert, VD
(Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Chen, S (Chen, S.); Cheng,
L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Crabb,
D (Crabb, D.); Crede, V (Crede, V.); Dashyan, N (Dashyan, N.); De Sanctis, E (De Sanctis, E.);
De Vita, R (De Vita, R.); Degtyarenko, PV (Degtyarenko, P. V.); Deur, A (Deur, A.);
Dharmawardane, KV (Dharmawardane, K. V.); Dickson, R (Dickson, R.); Djalali, C (Djalali,
C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger,
M (Dugger, M.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan,
K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.);
Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Fradi, A (Fradi, A.); Funsten, H (Funsten,
H.); Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K.
L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gonenc, A (Gonenc, A.); Gothe, RW
(Gothe, R. W.); Griffioen, KA (Griffioen, K. A.); Guidal, M (Guidal, M.); Guler, N (Guler, N.);
Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan,
H.); Hanretty, C (Hanretty, C.); Hersman, FW (Hersman, F. W.); Hicks, K (Hicks, K.);
Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde-Wright, CE (Hyde-Wright, C. E.);
N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.); Kim, W (Kim, W.); Klein, A
(Klein, A.); Klein, FJ (Klein, F. J.); Klimenko, AV (Klimenko, A. V.); Kossov, M (Kossov, M.);
(Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Lachniet, J (Lachniet, J.);
Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Lee,
T (Lee, T.); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick, M (MacCormick,
M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); Mazouz, M (Mazouz, M.);
McKinnon, B (McKinnon, B.); Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M.
D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Michel, B (Michel, B.); Mikhailov, K
(Mikhailov, K.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev,
V.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.);
Moteabbed, M (Moteabbed, M.); Munevar, E (Munevar, E.); Mutchler, GS (Mutchler, G. S.);
Nadel-Turonski, P (Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai,
S.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB (Niczyporuk, B.
B.); Niroula, MR (Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.);
Osipenko, M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E
(Pasyuk, E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.);
Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Pozdniakov,
S (Pozdniakov, S.); Price, JW (Price, J. W.); Procureur, S (Procureur, S.); Prok, Y (Prok, Y.);
Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.); Ricco, G (Ricco, G.); Ripani, M
DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, S
(Stepanyan, S.); Stepanyan, SS (Stepanyan, S. S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
DJ (Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Tur, C (Tur,
C.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.);
Voutier, E (Voutier, E.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.); Weygand,
DP (Weygand, D. P.); Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH (Wood,
M. H.); Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, ZW
(Zhao, Z. W.)
Title: Measurement of ep -> ep pi(0) beam spin asymmetries above the resonance region
Source: PHYSICAL REVIEW C, 77 (4): Art. No. 042201 APR 2008
Abstract: The beam spin asymmetry (BSA) in the exclusive reaction ep -> ep pi(0) was
measured with the CEBAF 5.77 GeV polarized electron beam and Large Acceptance
Spectrometer (CLAS). The x(B),Q(2),t, and phi dependences of the pi(0) BSA are presented in
the deep inelastic regime. The asymmetries are fitted with a sin phi function and their amplitudes
are extracted. Overall, they are of the order of 0.04-0.11 and roughly independent of t. This is the
signature of a nonzero longitudinal-transverse interference. The implications concerning the
applicability of a formalism based on generalized parton distributions, as well as the extension of
a Regge formalism at high photon virtualities, are discussed.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.77.042201
Record 152 of 499
Author(s): Arakelyan, GH (Arakelyan, G. H.); Merino, C (Merino, C.); Pajares, C (Pajares, C.);
Shabelski, YM (Shabelski, Y. M.)
Title: Midrapidity production of secondaries in pp collisions at RHIC and LHC energies in the
quark-gluon string model
Abstract: We consider the phenomenological implications of the assumption that baryons are
systems of three quarks connected through a gluon string junction. The transfer of baryon
number in rapidity space due to the string junction propagation is considered in detail. At high
energies this process leads to a significant effect on the net baryon production in hN collisions at
midrapidities. The numerical results for midrapidity inclusive densities of different secondaries
in the framework of the quark-gluon string model are in reasonable agreement with the
experimental data. One universal value, lambda similar or equal to 0.25, for the strangeness
suppression parameter correctly describes the yield ratios of Lambda/p, Xi/Lambda, and
Omega/Xi. The predictions for pp collisions at LHC energies are also presented.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0554-1
Record 153 of 499
Author(s): Gazazian, ED (Gazazian, E. D.); Guidi, V (Guidi, V.); Ispirian, KA (Ispirian, K. A.);
Ispirian, MK (Ispirian, M. K.); Kalantaryan, DK (Kalantaryan, D. K.)
Title: Femtosecond scanning, chopping (slicing) and measurement of length of electron bunches
by laser pulses: Principles of femtosecond, oscilloscopes
Source: PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY, (3): 184-189 Part 1 2007
Abstract: The equations of motion of electrons in a plane monochromatic wave with linear,
circular and elliptical polarizations are solved taking into account the initial conditions. The
cases when the interaction of the electrons with field of linearly and circularly polarized laser
photon beams takes place during a finite time, while the electrons are detected after a long fieldfree region being scanned with period of the order of femtosecond, are suitable for femtoslicing
and measurement of length of femtosecond electron pulses. The principles and limitations of
slicing and of construction of laser femtosecond oscilloscopes are considered, and a scheme of
experiment is proposed.
ISSN: 1562-6016
Record 154 of 499
(Antoranz, P.); Baixeras, C (Baixeras, C.); Barrio, JA (Barrio, J. A.); Bartko, H (Bartko, H.);
Bastieri, D (Bastieri, D.); Becker, JK (Becker, J. K.); Bednarek, W (Bednarek, W.); Berger, K
(Berger, K.); Bigongiari, C (Bigongiari, C.); Biland, A (Biland, A.); Bock, RK (Bock, R. K.);
Bonnoli, G (Bonnoli, G.); Bordas, P (Bordas, P.); Bosch-Ramon, V (Bosch-Ramon, V.); Bretz, T
Chilingarian, A (Chilingarian, A.); Commichau, S (Commichau, S.); Contreras, JL (Contreras, J.
L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.); Curtef, V (Curtef, V.); Dazzi, F
(Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C (Delgado, C.); de los Reyes, R (de los
Reyes, R.); Domingo-Santamaria, E (Domingo-Santamaria, E.); De Lotto, B (De Lotto, B.); De
Maria, M (De Maria, M.); De Sabata, F (De Sabata, F.); Dorner, D (Dorner, D.); Doro, M (Doro,
E (Fernandez, E.); Firpo, R (Firpo, R.); Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.);
Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R. J.); Garczarczyk, M
(Garczarczyk, M.); Gaug, M (Gaug, M.); Goebel, F (Goebel, F.); Hayashida, M (Hayashida, M.);
Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.);
Huber, S (Huber, S.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.);
Laille, A (Laille, A.); Leonardo, E (Leonardo, E.); Lindfors, E (Lindfors, E.); Lombardi, S
(Lombardi, S.); Longo, F (Longo, F.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar,
P (Majumdar, P.); Maneva, G (Maneva, G.); Mankuzhiyil, N (Mankuzhiyil, N.); Mannheim, K
(Mannheim, K.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.);
Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.); Miranda, JM (Miranda,
J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.); Moralejo, A (Moralejo, A.);
Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E
Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.);
M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, TY
(Saito, T. Y.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V (Scalzotto, V.);
(Vitale, V.); Wagner, RM (Wagner, R. M.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.);
Title: Magic observations of the unidentified gamma-ray source TEV J2032+4130
Source: ASTROPHYSICAL JOURNAL LETTERS, 675 (1): L25-L28 MAR 1 2008
Abstract: We observed the first known very high energy (VHE) gamma-ray-emitting
unidentified source, TeV J2032 + 4130, for 94 hr with the MAGIC telescope. The source was
detected with a significance of 5.6 sigma. The flux, position, and angular extension are
compatible with the previous ones measured by the HEGRA telescope system 5 years ago. The
integral flux amounts to (4.5 +/- 0.3(stat)+/- 0.35(sys)) x 10 (- 13) photons cm(-2) s(-1) above 1
TeV. The source energy spectrum, obtained with the lowest energy threshold to date, is
compatible with a single power law with a hard photon index of Gamma= - 2.0 +/- 0.3(stat)+/0.2(sys).
Record 155 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Bocquet, JP (Bocquet, J. -P.); Kashin, A
(Kashin, A.); Margarian, A (Margarian, A.); Bartalini, O (Bartalini, O.); Bellini, V (Bellini, V.);
Castoldi, M (Castoldi, M.); D'Angelo, A (D'Angelo, A.); Didelez, JP (Didelez, J. -P.); Di Salvo,
R (Di Salvo, R.); Fantini, A (Fantini, A.); Gervino, G (Gervino, G.); Ghio, F (Ghio, F.);
Girolami, B (Girolami, B.); Giusa, A (Giusa, A.); Guidal, M (Guidal, M.); Hourany, E (Hourany,
E.); Knyazyan, S (Knyazyan, S.); Kouznetsov, V (Kouznetsov, V.); Kunne, R (Kunne, R.);
Lapik, A (Lapik, A.); Sandri, PL (Sandri, P. Levi); Lleres, A (Lleres, A.); Mehrabyan, S
(Mehrabyan, S.); Moricciani, D (Moricciani, D.); Nedorezov, V (Nedorezov, V.); Rebreyend, D
(Rebreyend, D.); Russo, G (Russo, G.); Rudnev, N (Rudnev, N.); Schaerf, C (Schaerf, C.);
Perrin, C (Perrin, C.); Sperduto, ML (Sperduto, M. -L.); Sutera, MC (Sutera, M. -C.); Turinge, A
(Turinge, A.)
Title: Lowering the light speed isotropy limit: European synchrotron radiation facility
measurements
Source: NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL
PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND
METHODS, 122 (5): 515-519 MAY 2007
Abstract: The measurement of the Compton edge of the scattered electrons in GRAAL facility
in European Synchrotron Radiation Facility (ESRF) in Grenoble with respect to the Cosmic
Microwave Background dipole reveals up to IOU variations larger than the statistical errors. We
now show that the variations are not due to the frequency variations of the accelerator. The
nature of Compton edge variations remains unclear, thus outlining the imperative of dedicated
studies.
ISSN: 1594-9982
DOI: 10.1393/neb/i2007-10393-7
Record 156 of 499
Author(s): Ghahramanyan, T (Ghahramanyan, T.)
Title: The role of core in the instability of spherical gravitating systems
METHODS, 122 (5): 589-592 MAY 2007
Abstract: We study the dynamical instability in spherical gravitating systems with core using
the Ricci curvature criterion. By means of numerical estimations of the Ricci curvature for static
N-body systems, it is shown that the core can both increase and,decrease the degree of instability
in the system. This behavior is determined by the radius of the core and differs from the role of
the central mass.
ISSN: 1594-9982
DOI: 10.1393/ncb/i2007-10382-x
Record 157 of 499
Author(s): Khachatryan, HG (Khachatryan, H. G.); Yegorian, G (Yegorian, G.)
Title: On the high-redshift Hubble diagram, dark energy and CMB
METHODS, 122 (5): 603-606 MAY 2007
Abstract: Supernovae are currently the essential objects to test the cosmological models.
Gamma-ray bursts, if can be used as standard candles, can trace the expansion of the Universe at
earlier phases than it is possible via supernovae. The cosmological models with Gurzadyan and
Xue dark-energy formula are used to calibrate the Hubble diagram for redshifts up to about 6.
The link of the dark-energy models with the Cosmic Microwave Background (CMB) maps is
also discussed.
ISSN: 1594-9982
DOI: 10.1393/neb/i2007-10381-y
Record 158 of 499
Author(s): Manvelyan, R (Manvelyan, Ruben); Ruhl, W (Ruehl, Werner)
Title: Generalized curvature and Ricci tensors for a higher spin potential and the trace anomaly
in external higher spin fields in AdS(4) space
Source: NUCLEAR PHYSICS B, 796 (3): 457-470 JUN 21 2008
Abstract: The curvature of a higher spin potential as constructed in a previous article of the
same authors [R. Manvelyan, W. Ruhl, The generalized curvature and Christoffel symbols for a
higher spin potential in AdS(d+l) space, arXiv: 0705.3528 [hep-th]] is applied to the analysis of
the linearized trace anomaly obtained from the quadratic part of the effective action for a
conformally coupled scalar with linearized interaction with the external higher spin fields [R.
Manvelyan, W. Ruhl, The structure of the trace anomaly of higher spin conformal currents in the
bulk of AdS(4), Nucl. Phys. B 751 (2006) 285, hep-th/0602067]. The spin is restricted to four to
profit from technical simplifications but without reducing the problem in principle. The issue
includes the calculation of all Ricci tensors as multiple traces of the curvature, the derivation of
all primary and secondary Bianchi identities, expressing all Ricci tensors as differential operators
applied to the Fronsdal term, calculating the Weyl variation of these, and showing finally that
Weyl variations of integrals over contracted squares of Ricci tensors can be used to eliminate the
anomaly completely. This peculiarity is discussed in detail. As tools we use the formalism of
bisymmetric tensor fields whose space is equipped with a local bilinear invariant form, the *form. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2007.11.040
Record 159 of 499
Author(s): Makaryan, T (Makaryan, T.); Melikyan, A (Melikyan, A.); Minassian, H (Minassian,
H.)
Title: Surface plasmon frequency spectrum in a system of two spherical dielectric coated
metallic nanoparticles
Source: ACTA PHYSICA POLONICA A, 112 (5): 1025-1029 NOV 2007
Abstract: Semi-analytical method of surface plasmon frequency calculation for the system of
two almost touching Coupled dielectric coated metallic nanospheres is presented. The method
allows transforming the problem to numerical solution of two simple algebraic equations for
arbitrary values of parameters - particle radius, distance between sphere centers, dielectric
permittivity of the matrix, dielectrics and metals. It is especially easy to get the obvious graphical
solution. The surface plasmon frequencies of longitudinal and transversal oscillations of the
system are calculated and good agreement with the experimental results is achieved.
ISSN: 0587-4246
Record 160 of 499
Author(s): Mehmani, B (Mehmani, B.); Allahverdyan, AE (Allahverdyan, A. E.);
Nieuwenhuizen, TM (Nieuwenhuizen, Th. M.)
Title: Quantum-state tomography using a single apparatus
Source: PHYSICAL REVIEW A, 77 (3): Art. No. 032122 MAR 2008
Abstract: The density matrix of a two-level system (spin, atom) is usually determined by
measuring the three non-commuting components of the Pauli vector. This density matrix can
also be obtained via the measurement data of two commuting variables, using a single apparatus.
This is done by coupling the two-level system to a mode of radiation field, where the atom-field
interaction is described with the Jaynes-Cummings model. The mode starts its evolution from a
known coherent state. The unknown initial state of the atom is found by measuring two
commuting observables: the population difference of the atom and the photon number of the
field. We discuss the advantages of this setup and its possible applications.
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.77.032122
Record 161 of 499
Author(s): Aaron, FD (Aaron, F. D.); Aktas, A (Aktas, A.); Alexa, C (Alexa, C.); Andreev, V
(Andreev, V.); Antunovic, B (Antunovic, B.); Aplin, S (Aplin, S.); Asmone, A (Asmone, A.);
Astvatsatourov, A (Astvatsatourov, A.); Backovic, S (Backovic, S.); Baghdasaryan, A
(Baghdasaryan, A.); Baranov, P (Baranov, P.); Barreletl, E (Barreletl, E.); Barte, W (Barte, W.);
Baudrand, S (Baudrand, S.); Beckingham, M (Beckingham, M.); Begzsuren, K (Begzsuren, K.);
Behnke, O (Behnke, O.); Behrendt, O (Behrendt, O.); Belousov, A (Belousov, A.); Berger, N
(Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO (Boenig, M. -O.); Boudry, V (Boudry, V.);
Brinkmann, M (Brinkmann, M.); Brisson, V (Brisson, V.); Bruncko, D (Bruncko, D.); Busser,
FW (Buesser, F. W.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G (Buschhorn, G.);
Bystritskaya, L (Bystritskaya, L.); Campbell, AJ (Campbell, A. J.); Avila, KBC (Avila, K. B.
Cantun); Cassol-Brunner, F (Cassol-Brunner, F.); Cerny, K (Cerny, K.); Cerny, V (Cerny, V.);
Chekelian, V (Chekelian, V.); Cholewa, A (Cholewa, A.); Contreras, JG (Contreras, J. G.);
Coughlan, JA (Coughlan, J. A.); Cozzikao, G (Cozzikao, G.); Cvach, J (Cvach, J.); Dainton, JB
(Dainton, J. B.); Daum, K (Daum, K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.); Delcourt,
B (Delcourt, B.); Del Degan, M (Del Degan, M.); Delvax, J (Delvax, J.); De Roeck, A (De
Roeck, A.); De Wolf, EA (De Wolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov,
V.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S
(Egli, S.); Eichler, R (Eichler, R.); Eisele, F (Eisele, F.); Eliseev, A (Eliseev, A.); Elsen, E
(Elsen, E.); Essenov, S (Essenov, S.); Falkiewicz, A (Falkiewicz, A.); Faulkner, PJW (Faulkner,
P. J. W.); Favart, L (Favart, L.); Fedotov, A (Fedotov, A.); Felst, R (Felst, R.); Feltesse, J
(Feltesse, J.); Ferencei, J (Ferencei, J.); Finke, L (Finke, L.); Fleischer, M (Fleischer, M.);
Fomenko, A (Fomenko, A.); Franke, G (Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E
(Gabathuler, E.); Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Ginzburgskaya, S
(Ginzburgskaya, S.); Glazov, A (Glazov, A.); Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich,
L.); Goettlich, M (Goettlich, M.); Gogitidze, N (Gogitidze, N.); Gorbounov, S (Gorbounov, S.);
Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Grell, BR
(Grell, B. R.); Grindhammer, G (Grindhammer, G.); Habib, S (Habib, S.); Haidt, D (Haidt, D.);
Hansson, M (Hansson, M.); Heinzelmann, G (Heinzelmann, G.); Helebrant, C (Helebrant, C.);
Henderson, RCW (Henderson, R. C. W.); Henschel, H (Henschel, H.); Herrera, G (Herrera, G.);
Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D (Hoffmann, D.);
(Jemanov, V.); Jonsson, L (Joensson, L.); Johnson, DP (Johnson, D. P.); Jung, AW (Jung, A.
W.); Jung, H (Jung, H.); Kapichine, M (Kapichine, M.); Katzy, J (Katzy, J.); Kenyon, IR
Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Korbel, V
Kretzschmar, J (Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger,
K.); Landon, MPJ (Landon, M. P. J.); Lange, W (Lange, W.); Lastovicka-Medin, G (LastovickaMedin, G.); Laycock, P (Laycock, P.); Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth,
G.); Lendermann, V (Lendermann, V.); Levonian, S (Levonian, S.); Li, G (Li, G.); Lindfeld, L
(Lindfeld, L.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.); List, J (List, J.);
L.); Martisikova, M (Martisikova, M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S.
(Mikocki, S.); Milcewicz-Mika, I (Milcewicz-Mika, I.); Mohamed, A (Mohamed, A.); Moreau,
F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M.
U.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov, K.); Naroska, B
(Naroska, B.); Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.); Niebuhr, C
(Niebuhr, C.); Nikiforov, A (Nikiforov, A.); Nowak, G (Nowak, G.); Nowak, K (Nowak, K.);
Nozicka, M (Nozicka, M.); Oganezov, R (Oganezov, R.); Olivier, B (Olivier, B.); Olsson, JE
(Olsson, J. E.); Osman, S (Osman, S.); Ozerov, D (Ozerov, D.); Palichik, V (Palichik, V.);
Panagoulias, I (Panagoulias, I.); Pandurovic, M (Pandurovic, M.); Papadopoulou, T
(Papadopoulou, T.); Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Peng, H (Peng, H.);
Perez, E (Perez, E.); Perez-Astudillo, D (Perez-Astudillo, D.); Perieanu, A (Perieanu, A.);
Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.);
Placakyte, R (Placakyte, R.); Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.);
Prideaux, P (Prideaux, P.); Radescu, V (Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N
(Raicevic, N.); Ravdandorj, T (Ravdandorj, T.); Reimer, P (Reimer, P.); Risler, C (Risler, C.);
Rizvi, E (Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen,
R.); Rostovtsev, A (Rostovtsev, A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.);
Salek, D (Salek, D.); Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M
(Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.);
Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening, A.); SchultzCoulon, HC (Schultz-Coulon, H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN (Shaw-West, R.
N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.); Sloan, T (Sloan, T.);
Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.); Soloviev, Y (Soloviev, Y.); South, D
Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.); Straumann, U (Straumann,
U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov, V.); Thompson,
G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F (Tomasz,
F.); Tran, TH (Tran, T. H.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel,
P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis, G.); Tsurin,
I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.);
Utkin, D (Utkin, D.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen, P
(Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova, S
(Vinokurova, S.); Volchinski, V (Volchinski, V.); Weber, G (Weber, G.); Weber, R (Weber, R.);
Wegener, D (Wegener, D.); Werner, C (Werner, C.); Wessels, M (Wessels, M.); Wissing, C
(Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S (Xella, S.); Yeganov, V
(Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A
(Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann,
T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Measurement of isolated photon production in deep-inelastic scattering at HERA
Abstract: The production of isolated photons in deep-inelastic scattering ep -> e gamma X is
measured with the H1 detector at HERA. The measurement is performed in the kinematic range
of negative four-momentum transfer squared 4 < Q(2)< 150 GeV2 and a mass of the hadronic
system W-X > 50 GeV. The analysis is based on a total integrated luminosity of 227 pb(-1). The
production cross section of isolated photons with a transverse energy in the range 3 < ET(gamma)< 10 GeV and pseudorapidity range -1.2 <eta(gamma)< 1.8 is measured as a function
of E-T(gamma), eta(gamma) and Q(2). Isolated photon cross sections are also measured for
events with no jets or at least one hadronic jet. The measurements are compared with predictions
from Monte Carlo generators modelling the photon radiation from the quark and the electron
lines, as well as with calculations at leading and next to leading order in the strong coupling. The
predictions significantly underestimate the measured cross sections.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0541-6
Record 162 of 499
(Baghdasaryan, A.); Baranov, P (Baranov, P.); Barrelet, E (Barrelet, E.); Bartel, W (Bartel, W.);
Coughlan, JA (Coughlan, J. A.); Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton, JB
(Dainton, J. B.); Daume, K (Daume, K.); Deak, M (Deak, M.); de Boer, Y (de Boer, Y.);
(Dodonov, V.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko,
V.); Egli, S (Egli, S.); Eichler, R (Eichler, R.); Eisele, F (Eisele, F.); Eliseev, A (Eliseev, A.);
Elsen, E (Elsen, E.); Essenov, S (Essenov, S.); Falkiewicz, A (Falkiewicz, A.); Faulkner, PJW
Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.); Finke, L (Finke, L.); Fleischer, M (Fleischer,
M.); Fomenko, A (Fomenko, A.); Franke, G (Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E
L.); Martisikova, M (Martisikova, M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S.
(Mikocki, S.); Milcewicz-Mika, I (Milcewicz-Mika, I.); Mohamed, A (Mohamed, A.); Moreau,
F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M.
(Naroska, B.); Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.); Niebuhr, C
Salek, D (Salek, D.); Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M
(Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.);
Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A (Schoening, A.); SchultzCoulon, HC (Schultz-Coulon, H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN (Shaw-West, R.
N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.); Sloan, T (Sloan, T.);
Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.); Soloviev, Y (Soloviev, Y.); South, D
Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.); Straumann, U (Straumann,
U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov, V.); Thompson,
G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F (Tomasz,
F.); Tran, TH (Tran, T. H.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel,
P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis, G.); Tsurin,
I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.);
Utkin, D (Utkin, D.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen, P
(Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova, S
(Vinokurova, S.); Volchinski, V (Volchinski, V.); Weber, G (Weber, G.); Weber, R (Weber, R.);
(Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S (Xella, S.); Yeganov, V
(Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A
(Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann,
T.); Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Three- and four-jet production at low x at HERA
Abstract: Three- and four-jet production is measured in deep-inelastic ep scattering at low x and
Q(2) with the H1 detector using an integrated luminosity of 44.2 pb(-1). Several phase space
regions are selected for the three-jet analysis in order to study the underlying parton dynamics
from global topologies to the more restrictive regions of forward jets close to the proton
direction. The measurements of cross sections for events with at least three jets are compared to
fixed order QCD predictions of O(alpha(2)(s)) and O(alpha(3)(s)) and with Monte Carlo
simulation programs where higher order effects are approximated by parton showers. A good
overall description is provided by the O(alpha(3)(s)) calculation. Too few events are predicted at
the lowest x similar to 10(-4), especially for topologies with two forward jets. This hints to large
contributions at low x from initial state radiation of gluons close to the proton direction and
unordered in transverse momentum. The Monte Carlo program in which gluon radiation is
generated by the colour dipole model gives a good description of both the three- and the four-jet
data in absolute normalisation and shape.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-008-0544-3
Record 163 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); Bazer-
Bachi, AR (Bazer-Bachi, A. R.); Behera, B (Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W
(Benbow, W.); Berge, D (Berge, D.); Bernlohr, K (Bernloehr, K.); Boisson, C (Boisson, C.);
Bolz, O (Bolz, O.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brown, AM
(Brown, A. M.); Buhler, R (Buehler, R.); Bulik, T (Bulik, T.); Busching, I (Buesching, I.);
Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Degrange, B (Degrange, B.);
(Domainko, W.); Drury, LO (Drury, L. O'C.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Egberts,
K (Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier,
C (Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A (Foerster, A.);
Fontaine, G (Fontaine, G.); Fukui, Y (Fukui, Y.); Funk, S (Funk, Seb.); Funk, S (Funk, S.);
Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B (Giebels, B.); Glicenstein,
JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C
(de Jager, O. C.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B
(Khelifi, B.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.);
Latham, IJ (Latham, I. J.); Le Gallou, R (Le Gallou, R.); Lemiere, A (Lemiere, A.); LemoineGoumard, M (Lemoine-Goumard, M.); Lenain, JP (Lenain, J. -P.); Lohse, T (Lohse, T.); Martin,
JM (Martin, J. M.); Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith,
A.); Masterson, C (Masterson, C.); Maurin, G (Maurin, G.); McComb, TJL (McComb, T. J. L.);
Moderski, R (Moderski, R.); Moriguchi, Y (Moriguchi, Y.); Moulin, E (Moulin, E.); de Naurois,
M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.); Olive, JP (Olive, J. -P.);
M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P.
-O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Ranchon, S
(Ranchon, S.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM
(Rayner, S. M.); Reimer, O (Reimer, O.); Renaud, M (Renaud, M.); Ripken, J (Ripken, J.); Rob,
L (Rob, L.); Rolland, L (Rolland, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.);
Rudak, B (Rudak, B.); Ruppel, J (Ruppel, J.); Sahakian, V (Sahakian, V.); Santangelo, A
(Santangelo, A.); Sauge, L (Sauge, L.); Schlenker, S (Schlenker, S.); Schlickeiser, R
(Schlickeiser, R.); Schroder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S
C (Stegmann, C.); Superina, G (Superina, G.); Takeuchi, T (Takeuchi, T.); Tam, PH (Tam, P.
H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.);
Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.); Vincent, P
(Wagner, S. J.); Ward, M (Ward, M.)
Title: Discovery of very high energy gamma-ray emission coincident with molecular clouds in
the W 28 (G6.4-0.1) field
Source: ASTRONOMY & ASTROPHYSICS, 481 (2): 401-U69 APR 2008
Abstract: Aims. Observations of shell-type supernova remnants (SNRs) in the GeV to multiTeV gamma-ray band, coupled with those at millimetre radio wavelengths, are motivated by the
search for cosmic-ray accelerators in our Galaxy. The old-age mixed-morphology SNRW28
(distance similar to 2 kpc) is a prime target due to its interaction with molecular clouds along its
northeastern boundary and other clouds situated nearby.
Methods. We observed the W28 field (for similar to 40 h) at very high energy (VHE) gamma-ray
energies (E > 0.1 TeV) with the HESS. Cherenkov telescopes. A reanalysis of EGRET E > 100
MeV data was also undertaken. Results from the NANTEN 4 m telescope Galactic plane survey
and other CO observations were used to study molecular clouds.
Results. We have discovered VHE gamma-ray emission (HESS J1801-233) coincident with the
northeastern boundary of W 28 and a complex of sources (HESS J1800-240A, B and C) similar
to 0.5 degrees south of W 28 in the Galactic disc. The EGRET source (GRO J1801-2320) is
centred on HESS J1801-233 but may also be related to HESS J1800-240 given the large EGRET
point spread function. The VHE differential photon spectra are well fit by pure power laws with
indices Gamma similar to 2.3 to 2.7. The spectral indices of HESS J1800-240A, B, and C are
consistent within statistical errors. All VHE sources are similar to 10' in intrinsic radius except
for HESS J1800-240C, which appears pointlike. The NANTEN (CO)-C-12(J = 1-0) data reveal
molecular clouds positionally associating with the VHE emission, spanning a similar to 15 km
s(-1) range in local standard of rest velocity.
Conclusions. The VHE/molecular cloud association could indicate a hadronic origin for HESS
J1801-233 and HESS J1800-240, and several cloud components in projection may contribute to
the VHE emission. The clouds have components covering a broad velocity range encompassing
the distance estimates for W28 (similar to 2 kpc) and extending up to similar to 4 kpc. Assuming
hadronic origin and distances of 2 and 4 kpc for cloud components, the required cosmic-ray
density enhancement factors (with respect to the solar value) are in the range similar to 10 to
similar to 30. If situated at 2 kpc distance, such cosmic-ray densities may be supplied by SNRs
like W 28. Additionally and/or alternatively, particle acceleration may come from several
catalogued SNRs and SNR candidates, the energetic ultra compact HII region W 28A2, and the
HII regions M 8 and M 20, along with their associated open clusters. Further sub-mm
observations would be recommended to probe in detail the dynamics of the molecular clouds at
velocites > 10 km s(-1) and their possible connection to W 28.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20077765
Record 164 of 499
Author(s): Tamaryan, L (Tamaryan, Levon); Park, D (Park, DaeKil); Tamaryan, S (Tamaryan,
Sayatnova)
Title: Analytic expressions for geometric measure of three-qubit states
Source: PHYSICAL REVIEW A, 77 (2): Art. No. 022325 FEB 2008
Abstract: A method is developed to derive algebraic equations for the geometric measure of
entanglement of three-qubit pure states. The equations are derived explicitly and solved in the
cases of most interest. These equations allow one to derive analytic expressions of the geometric
entanglement measure in a wide range of three-qubit systems, including the general class of W
states and states which are symmetric under the permutation of two qubits. The nearest separable
states are not necessarily unique, and highly entangled states are surrounded by a one-parametric
set of equally distant separable states. A possibility for physical applications of the various threequbit states to quantum teleportation and superdense coding is suggested from the aspect of
entanglement.
ISSN: 1050-2947
DOI: 10.1103/PhysRevA.77.022325
Record 165 of 499
Author(s): Vereshchagin, GV (Vereshchagin, G. V.); Yegorian, G (Yegorian, G.)
Title: Dynamics of perturbations in Gurzadyan-Xue cosmological models
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS D, 17 (2): 203-223 FEB
2008
Abstract: Perturbation theory within Newtonian approximation is presented for cosmological
models with time-varying physical constants. Analytical solutions for perturbations dynamics are
obtained for each Gurzadyan-Xue model with pressureless matter and radiation. It is found that
perturbations grow during the entire expansion within GX models, including the curvature- and
vacuum-dominated stage when they cease to grow in the standard cosmological model.
ISSN: 0218-2718
Record 166 of 499
Author(s): Melikyan, A (Melikyan, A.); Minassian, H (Minassian, H.)
Title: Calculation of longitudinal surface plasmon frequencies in noble metal nanorods
Source: CHEMICAL PHYSICS LETTERS, 452 (1-3): 139-143 FEB 4 2008
Abstract: The longitudinal surface plasmon oscillation frequencies of long enough noble metal
nanorods are analyzed theoretically. An expression for frequency dependence on aspect ratio
accounting for the contribution of d-electrons into the dielectric function of metal is obtained.
The results of calculations for gold nanorods in aqueous solution are compared with various
experiments and good agreement is demonstrated. An analytical expression for the surface
plasmon resonance sensitivity with respect to changes in the refractive index of surrounding
media is obtained. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0009-2614
DOI: 10.1016/j.cplett.2007.12.032
Record 167 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); BazerBachi, AR (Bazer-Bachi, A. R.); Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Berge,
D (Berge, D.); Bernloehr, K (Bernloehr, K.); Boisson, C (Boisson, C.); Bolz, O (Bolz, O.);
Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brown, AM (Brown, A. M.);
Buhler, R (Buehler, R.); Buesching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S
(Carrigan, S.); Chadwick, PM (Chadwick, P. M.); Chounet, LM (Chounet, L. -M.); Coignet, G
(Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Degrange, B (Degrange,
B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Ataie, A.); Drury, LO (Drury,
L. O'C.); Dubus, G (Dubus, G.); Egberts, K (Egberts, K.); Emmanoulopoulos, D
(Feinstein, F.); Ferrero, E (Ferrero, E.); Fiasson, A (Fiasson, A.); Fontaine, G (Fontaine, G.);
Funk, S (Funk, Seb.); Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y.
A.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P
(Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Kendziorra, E (Kendziorra, E.);
Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B (Khelifi, B.); Komin, N (Komin, Nu.); Kosack, K
(Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); Le Gallou, R (Le Gallou,
R.); Lemiere, A (Lemiere, A.); Lemoine-Goumard, M (Lemoine-Goumard, M.); Lohse, T
(Lohse, T.); Martin, JM (Martin, J. M.); Martineau-Huynh, O (Martineau-Huynh, O.);
Marcowith, A (Marcowith, A.); Masterson, C (Masterson, C.); Maurin, G (Maurin, G.);
McComb, TJL (McComb, T. J. L.); Moulin, E (Moulin, E.); de Naurois, M (de Naurois, M.);
Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.); Noutsos, A (Noutsos, A.); Nuss, E (Nuss, E.);
Olive, JP (Olive, J. -P.); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Panter, M
(Panter, M.); Pelletier, G (Pelletier, G.); Petrucci, PO (Petrucci, P. O.); Pita, S (Pita, S.);
Puehlhofer, G (Puehlhofer, G.); Punch, M (Punch, M.); Ranchon, S (Ranchon, S.);
Raubenheimer, BC (Raubenheimer, B. C.); Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.);
Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rolland, L (Rolland, L.); Rosier-Lees, S (Rosier-Lees,
S.); Rowell, G (Rowell, G.); Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo, A.); Sauge,
L (Sauge, L.); Schlenker, S (Schlenker, S.); Schlickeiser, R (Schlickeiser, R.); Schroder, R
S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.);
Spanier, F (Spanier, F.); Steenkamp, R (Steenkamp, R.); Stegmann, C (Stegmann, C.); Superina,
G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J. -P.); Terrier, R (Terrier, R.);
Tluczykont, M (Tluczykont, M.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Volk, HJ (Voelk, H. J.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward, M.)
Title: Observations of the Sagittarius dwarf galaxy by the HESS experiment and search for a
dark matter signal
Source: ASTROPARTICLE PHYSICS, 29 (1): 55-62 FEB 2008
Abstract: Observations of the Sagittarius dwarf spheroidal (Sgr dSph) galaxy were carried out
with the HESS array of four imaging air Cherenkov telescopes in June 2006. A total of 11 h of
high quality data are available after data selection. There is no evidence for a very high energy
gamma-ray signal above the energy threshold at the target position. A 95% CL flux limit of 3.6 x
10(-12) cm(-2) s(-1) above 250 GeV has been derived. Constraints on the velocity-weighted
cross-section (sigma upsilon) are calculated in the framework of dark matter particle annihilation
using realistic models for the dark matter halo profile of Sagittarius dwarf galaxy. Two different
models have been investigated encompassing a large class of halo types. A 95% CL exclusion
limit on (sigma upsilon) of the order of 2 x 10(-25) cm(3) s(-1) is obtained for a core profile in
the 100 GeV-1 TeV neutralino mass range. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0927-6505
Record 168 of 499
Author(s): Gurzadyan, VG (Gurzadyan, V. G.); Starobinsky, AA (Starobinsky, A. A.); Kashin,
AL (Kashin, A. L.); Khachatryan, HG (Khachatryan, H. G.); Yegorian, G (Yegorian, G.)
Title: On axial and plane-mirror inhomogeneities in the WMAP3 cosmic microwave background
maps
Source: MODERN PHYSICS LETTERS A, 22 (39): 2955-2964 DEC 21 2007
Abstract: We study inhomogeneities in the distribution of the excursion sets in the Cosmic
Microwave Background (CMB) temperature maps obtained by the three years survey of the
Wilkinson Microwave Anisotropy Probe (WMAP). At temperature thresholds |T| 90 mu K, the
distributions of the excursion sets with over 200 pixels are concentrated in two regions, nearly at
the antipodes, with galactic coordinates 1 = 94.7 degrees, b = 34.4 degrees and 1 - 279.8 degrees,
b = -29.2 degrees. The centers of these two regions drift towards the equator when the
temperature threshold is increased. The centers are located close to one of the vectors of l = 3
multipole. The two patterns of the substructures in the distribution of the excursion sets are
mirrored, with chi(2) = 0.7 1.5. There is no obvious origin of this effect in the noise structure of
WMAP, and there is no evidence for a dependence on the galactic cut. Would this effect be
cosmological, it could be an indication of an anomalously large component of horizon-size
density perturbations, independent of one of the spatial coordinates, and/or of a non-trivial slablike spatial topology of the Universe.
ISSN: 0217-7323
Record 169 of 499
Author(s): Adzic, P (Adzic, P.); Alemany-Fernandez, R (Alemany-Fernandez, R.); Almeida, CB
(Almeida, C. B.); Almeida, NM (Almeida, N. M.); Anagnostou, G (Anagnostou, G.); Anfreville,
MG (Anfreville, M. G.); Anicin, I (Anicin, I.); Antunovic, Z (Antunovic, Z.); Auffray, E
(Auffray, E.); Baccaro, S (Baccaro, S.); Baffioni, S (Baffioni, S.); Baillon, P (Baillon, P.);
Barney, D (Barney, D.); Barone, LM (Barone, L. M.); Barrillon, P (Barrillon, P.); Bartoloni, A
(Bartoloni, A.); Beauceron, S (Beauceron, S.); Beaudette, F (Beaudette, F.); Bell, KW (Bell, K.
W.); Benetta, R (Benetta, R.); Bercher, MJ (Bercher, M. J.); Berthon, U (Berthon, U.); Betev, B
(Betev, B.); Beuselinck, R (Beuselinck, R.); Bhardwaj, A (Bhardwaj, A.); Bialas, W (Bialas,
W.); Biino, C (Biino, C.); Bimbot, S (Bimbot, S.); Blaha, J (Blaha, J.); Bloch, P (Bloch, P.);
Blyth, S (Blyth, S.); Bordalo, P (Bordalo, P.); Bornheim, A (Bornheim, A.); Bourotte, JM
(Bourotte, J. M.); Britton, D (Britton, D.); Brown, RM (Brown, R. M.); Bruneliere, R
(Bruneliere, R.); Busson, P (Busson, P.); Camporesi, T (Camporesi, T.); Cartiglia, N (Cartiglia,
N.); Cavallari, F (Cavallari, F.); Cerutti, M (Cerutti, M.); Chamont, D (Chamont, D.); Chang, P
(Chang, P.); Chang, YH (Chang, Y. H.); Charlot, C (Charlot, C.); Chatterji, S (Chatterji, S.);
Chen, EA (Chen, E. A.); Chipaux, R (Chipaux, R.); Choudhary, BC (Choudhary, B. C.);
Cockerill, DJ (Cockerill, D. J.); Collard, C (Collard, C.); Combaret, C (Combaret, C.); Cossutti,
F (Cossutti, F.); Da Silva, JC (Da Silva, J. C.); Dafinei, I (Dafinei, I.); Daskalakis, G
(Daskalakis, G.); Davatz, G (Davatz, G.); Decotigny, D (Decotigny, D.); De Min, A (De Min,
A.); Deiters, K (Deiters, K.); Dejardin, M (Dejardin, M.); Del Re, D (Del Re, D.); Della Negra,
R (Della Negra, R.); Della Ricca, G (Della Ricca, G.); Depasse, P (Depasse, P.); Descamp, J
(Descamp, J.); Dewhirst, G (Dewhirst, G.); Dhawan, S (Dhawan, S.); Diemoz, M (Diemoz, M.);
Dissertori, G (Dissertori, G.); Dittmar, M (Dittmar, M.); Djambazov, L (Djambazov, L.);
Dobrzynski, L (Dobrzynski, L.); Drndarevic, S (Drndarevic, S.); Dupanloup, M (Dupanloup,
M.); Dzelalija, M (Dzelalija, M.); Ehlers, J (Ehlers, J.); El Mamouni, H (El Mamouni, H.);
Elliott-Peisert, A (Elliott-Peisert, A.); Evangelou, I (Evangelou, I.); Fabbro, B (Fabbro, B.);
Faure, JL (Faure, J. L.); Fay, J (Fay, J.); Ferri, F (Ferri, F.); Flower, PS (Flower, P. S.); Franzoni,
G (Franzoni, G.); Funk, W (Funk, W.); Gaillac, A (Gaillac, A.); Gargiulo, C (Gargiulo, C.);
Shotkin, SG (Shotkin, S. Gascon); Geerebaert, Y (Geerebaert, Y.); Gentit, FX (Gentit, F. X.);
Ghezzi, A (Ghezzi, A.); Gilly, J (Gilly, J.); Giolo-Nicollerat, AS (Giolo-Nicollerat, A. S.);
Givernaud, A (Givernaud, A.); Gninenko, S (Gninenko, S.); Go, A (Go, A.); Godinovic, N
(Godinovic, N.); Golubev, N (Golubev, N.); Golutvin, I (Golutvin, I.); Gomez-Reino, R (GomezReino, R.); Govoni, P (Govoni, P.); Grahl, J (Grahl, J.); Gras, P (Gras, P.); Greenhalgh, J
(Greenhalgh, J.); Guillaud, JP (Guillaud, J. P.); Haguenauer, M (Haguenauer, M.); De
Monchenault, GH (De Monchenault, G. Hamel); Hansen, M (Hansen, M.); Heath, HF (Heath, H.
F.); Hill, JA (Hill, J. A.); Hobson, PR (Hobson, P. R.); Holmes, D (Holmes, D.); Holzner, AG
(Holzner, A. G.); Hou, GW (Hou, G. W.); Ille, B (Ille, B.); Ingram, Q (Ingram, Q.); Jain, A (Jain,
A.); Jarry, P (Jarry, P.); Jauffret, C (Jauffret, C.); Jha, M (Jha, M.); Karar, MA (Karar, M. A.);
Kataria, SK (Kataria, S. K.); Katchanov, V (Katchanov, V.); Kennedy, BW (Kennedy, B. W.);
Kloukinas, K (Kloukinas, K.); Kokkas, P (Kokkas, P.); Korjik, M (Korjik, M.); Krasnikov, N
(Krasnikov, N.); Krpic, D (Krpic, D.); Kyriakis, A (Kyriakis, A.); Lebeau, M (Lebeau, M.);
Lecomte, P (Lecomte, P.); Lecoq, P (Lecoq, P.); Lemaire, MC (Lemaire, M. C.); Lethuillier, M
(Lethuillier, M.); Lin, W (Lin, W.); Lintern, AL (Lintern, A. L.); Lister, A (Lister, A.); Litvin, V
(Litvin, V.); Locci, E (Locci, E.); Lodge, AB (Lodge, A. B.); Longo, E (Longo, E.); Loukas, D
(Loukas, D.); Luckey, D (Luckey, D.); Lustermann, W (Lustermann, W.); Lynch, C (Lynch, C.);
Mackay, CK (Mackay, C. K.); Malberti, M (Malberti, M.); Maletic, D (Maletic, D.);
Mandjavidze, I (Mandjavidze, I.); Manthos, N (Manthos, N.); Markou, A (Markou, A.); Mathez,
H (Mathez, H.); Mathieu, A (Mathieu, A.); Matveev, V (Matveev, V.); Maurelli, G (Maurelli,
G.); Menichetti, E (Menichetti, E.); Meridiani, P (Meridiani, P.); Milenovic, P (Milenovic, P.);
Milleret, G (Milleret, G.); Mine, P (Mine, P.); Mur, M (Mur, M.); Musienko, Y (Musienko, Y.);
Nardulli, A (Nardulli, A.); Nash, J (Nash, J.); Neal, H (Neal, H.); Nedelec, P (Nedelec, P.);
Negri, P (Negri, P.); Nessi-Tedaldi, F (Nessi-Tedaldi, F.); Newman, HB (Newman, H. B.);
Nikitenko, A (Nikitenko, A.); Obertino, MM (Obertino, M. M.); Ofierzynski, RA (Ofierzynski,
R. A.); Organtini, GC (Organtini, G. C.); Paganini, P (Paganini, P.); Paganoni, M (Paganoni,
M.); Papadopoulos, I (Papadopoulos, I.); Paramatti, R (Paramatti, R.); Pastrone, N (Pastrone,
N.); Pauss, F (Pauss, F.); Puljak, I (Puljak, I.); Pullia, A (Pullia, A.); Puzovic, J (Puzovic, J.);
Ragazzi, S (Ragazzi, S.); Ramos, S (Ramos, S.); Rahatlou, S (Rahatlou, S.); Rander, J (Rander,
J.); Ranjan, K (Ranjan, K.); Ravat, O (Ravat, O.); Raymond, M (Raymond, M.); Razis, PA
(Razis, P. A.); Redaelli, N (Redaelli, N.); Renker, D (Renker, D.); Reucroft, S (Reucroft, S.);
Reymond, JM (Reymond, J. M.); Reynaud, M (Reynaud, M.); Reynaud, S (Reynaud, S.);
Romanteau, T (Romanteau, T.); Rondeaux, F (Rondeaux, F.); Rosowsky, A (Rosowsky, A.);
Rovelli, C (Rovelli, C.); Rumerio, P (Rumerio, P.); Rusack, R (Rusack, R.); Rusakov, SV
(Rusakov, S. V.); Ryan, MJ (Ryan, M. J.); Rykaczewski, H (Rykaczewski, H.); Sakhelashvili, T
(Sakhelashvili, T.); Salerno, R (Salerno, R.); Santos, M (Santos, M.); Seez, C (Seez, C.);
Semeniouk, I (Semeniouk, I.); Sharif, O (Sharif, O.); Sharp, P (Sharp, P.); Themistocleous, CS
(Themistocleous, C. Shepherd); Shevchenko, S (Shevchenko, S.); Shivpuri, RK (Shivpuri, R.
K.); Sidiropoulos, G (Sidiropoulos, G.); Sillou, D (Sillou, D.); Singovski, A (Singovski, A.);
Sirois, Y (Sirois, Y.); Sirunyan, AM (Sirunyan, A. M.); Smith, B (Smith, B.); Smith, VJ (Smith,
V. J.); Sproston, M (Sproston, M.); Suter, H (Suter, H.); Swain, J (Swain, J.); De Fatis, TT (De
Fatis, T. Tabarelli); Takahashi, M (Takahashi, M.); Tapper, RJ (Tapper, R. J.); Tcheremoukhine,
A (Tcheremoukhine, A.); Teixeira, I (Teixeira, I.); Teixeira, JP (Teixeira, J. P.); Teller, O
(Teller, O.); Timlin, C (Timlin, C.); Triantis, FA (Triantis, F. A.); Troshin, S (Troshin, S.);
Tyurin, N (Tyurin, N.); Ueno, K (Ueno, K.); Uzunian, A (Uzunian, A.); Varela, J (Varela, J.);
Cardoso, NV (Cardoso, N. Vaz); Verrecchia, P (Verrecchia, P.); Vichoudis, P (Vichoudis, P.);
Vigano, S (Vigano, S.); Viertel, G (Viertel, G.); Virdee, T (Virdee, T.); Vlassov, E (Vlassov, E.);
Wang, M (Wang, M.); Weinstein, A (Weinstein, A.); Williams, JH (Williams, J. H.); Yaselli, I
(Yaselli, I.); Zabi, A (Zabi, A.); Zamiatin, N (Zamiatin, N.); Zelepoukine, S (Zelepoukine, S.);
Zeller, M (Zeller, M.); Zhang, LY (Zhang, L. Y.); Zhang, J (Zhang, J.); Zhang, Y (Zhang, Y.);
Zhu, K (Zhu, K.); Zhu, RY (Zhu, R. Y.)
Title: Energy resolution of the barrel of the CMS Electromagnetic Calorimeter
Source: JOURNAL OF INSTRUMENTATION, 2: Art. No. P04004 APR 2007
Abstract: The energy resolution of the barrel part of the CMS Electromagnetic Calorimeter has
been studied using electrons of 20 to 250 GeV in a test beam. The incident electron's energy was
reconstructed by summing the energy measured in arrays of 3 x 3 or 5 x 5 channels. There was
no significant amount of correlated noise observed within these arrays. For electrons incident at
the centre of the studied 3 x 3 arrays of crystals, the mean stochastic term was measured to be
2.8% and the mean constant term to be 0.3%. The amount of the incident electrons' energy which
is contained within the array depends on its position of incidence. The variation of the
containment with position is corrected for using the distribution of the measured energy within
the array. For uniform illumination of a crystal with 120 GeV electrons a resolution of 0.5% was
achieved. The energy resolution meets the design goal for the detector.
ISSN: 1748-0221
Record 170 of 499
(Antoranz, P.); Armada, A (Armada, A.); Baixeras, C (Baixeras, C.); Barrio, JA (Barrio, J. A.);
Chilingarian, A (Chilingarian, A.); Coarasa, JA (Coarasa, J. A.); Commichau, S (Commichau,
S.); Contreras, JL (Contreras, J. L.); Cortina, J (Cortina, J.); Costado, MT (Costado, M. T.);
Curtef, V (Curtef, V.); Danielyan, V (Danielyan, V.); Dazzi, F (Dazzi, F.); De Angelis, A (De
Angelis, A.); Delgado, C (Delgado, C.); de los Reyes, R (de los Reyes, R.); De Lotto, B (De
Lotto, B.); Domingo-Santamaria, E (Domingo-Santamaria, E.); Dorner, D (Dorner, D.); Doro, M
(Doro, M.); Errando, M (Errando, M.); Fagiolini, M (Fagiolini, M.); Ferenc, D (Ferenc, D.);
Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.); Flix, J (Flix, J.); Fonseca, MV (Fonseca, M.
V.); Font, L (Font, L.); Fuchs, M (Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, R
(Garcia-Lopez, R.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Giller, M (Giller,
M.); Goebel, F (Goebel, F.); Hakobyan, D (Hakobyan, D.); Hayashida, M (Hayashida, M.);
Hengstebeck, T (Hengstebeck, T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J
(Hose, J.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra,
R.); Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E
(Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez,
M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.);
Mannheim, K (Mannheim, K.); Mansutti, O (Mansutti, O.); Mariotti, M (Mariotti, M.); Martinez,
M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C (Merck, C.); Meucci, M (Meucci, M.);
S (Mizobuchi, S.); Moralejo, A (Moralejo, A.); Nieto, D (Nieto, D.); Nilsson, K (Nilsson, K.);
I.); Paneque, D (Paneque, D.); Panniello, M (Panniello, M.); Paoletti, R (Paoletti, R.); Paredes,
JM (Paredes, J. M.); Pasanen, M (Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.);
Pegna, R (Pegna, R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.);
Poller, M (Poller, M.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A
M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Sanchez, A
Sobczynska, D (Sobczynska, D.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L
(Takalo, L.); Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.);
Tonello, N (Tonello, N.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov,
H.); Vitale, V (Vitale, V.); Wagner, RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W
(Wittek, W.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: VHE gamma-ray observation of the Crab Nebula and its pulsar with the MAGIC telescope
Source: ASTROPHYSICAL JOURNAL, 674 (2): 1037-1055 FEB 20 2008
Abstract: We report about very high energy (VHE) gamma-ray observations of the Crab Nebula
with the MAGIC telescope. The gamma-ray flux from the nebula was measured between 60 GeV
and 9 TeV. The energy spectrum can be described by a curved power law dF/dE = f(0)(E/300
GeV)([a+b log)((E/300 GeV)])(10) with a flux normalization f(0) of (6.0 +/- 0.2(stat)) x 10(-10)
cm(-2) s(-1) TeV-1, a = 2.31 +/- 0.06(stat), and b = 0.26 +/- 0.07(stat). The peak in the spectral
energy distribution is estimated at 77 +/- 35 GeV. Within the observation time and the
experimental resolution of the telescope, the gamma-ray emission is steady and pointlike. The
emission's center of gravity coincides with the position of the pulsar. Pulsed gamma-ray
emission from the pulsar could not be detected. We constrain the cutoff energy of the pulsed
spectrum to be less than 27 GeV, assuming that the differential energy spectrum has an
exponential cutoff. For a superexponential shape, the cutoff energy can be as high as 60 GeV.
ISSN: 0004-637X
Record 171 of 499
Author(s): Akopova, AB (Akopova, A. B.); Tatikyan, SS (Tatikyan, S. Sh.); Manaseryan, MM
(Manaseryan, M. M.); Melkonyan, AA (Melkonyan, A. A.); Ivanov, VA (Ivanov, V. A.)
Title: Investigation of radiation fields at different altitudes in near-Earth orbit
Source: ADVANCES IN SPACE RESEARCH, 40 (11): 1580-1585 2007
Abstract: Space radiation dosimetry presents one of the greatest challenges in the field of
radiation safety. In the present paper the dosimetric data collected over the last 20 years of
radiation field measurement on near-Earth orbits are presented. The measurements were carried
out aboard "Cosmos" spacecrafts (1979-1989), "Mir" station (1988 and 199 1), as well as on
board the ISS (2002). For determination of important characteristics of cosmic rays (particle
fluxes, LET and fast neutron spectra, equivalent doses and heavy ion fluxes) a nuclear emulsion
has been used as a controllable threshold detector. An integral LET spectrum was measured in
the range of 0.5-3.5 x 10(3) keV/mu m. The energy spectra of fast neutrons with E = 1-15 MeV
have been also studied and induced equivalent doses calculated. (c) 2007 COSPAR. Published
by Elsevier Ltd. All rights reserved.
ISSN: 0273-1177
DOI: 10.1016/j.asr.2007.05.045
Record 172 of 499
Author(s): Ireland, DG (Ireland, D. G.); McKinnon, B (McKinnon, B.); Protopopescu, D
(Protopopescu, D.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.);
N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Batourine, V (Batourine, V.);
Battaglieri, M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bellis, M (Bellis, M.); Benmouna,
W. K.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J.
R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Chen, S
(Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P
(Coltharp, P.); Crabb, D (Crabb, D.); Crede, V (Crede, V.); Dashyan, N (Dashyan, N.); De Masi,
R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV
(Degtyarenko, P. V.); Deur, A (Deur, A.); Dickson, R (Dickson, R.); Djalali, C (Djalali, C.);
Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger, M
(Dugger, M.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi,
L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fedotov, G (Fedotov, G.);
Feldman, G (Feldman, G.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.); Garcon, M (Garcon,
M.); Gavalian, G (Gavalian, G.); Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.);
(Gohn, W.); Gonenc, A (Gonenc, A.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K.
A.); Guidal, M (Guidal, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan,
V.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hanretty, C (Hanretty, C.); Hassall, N
(Hassall, N.); Hersman, FW (Hersman, F. W.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop,
M.); Hyde-Wright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ishkhanov, BS (Ishkhanov,
B. S.); Isupov, EL (Isupov, E. L.); Jenkins, D (Jenkins, D.); Jo, HS (Jo, H. S.); Johnstone, JR
N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.); Kim, W (Kim, W.); Klein, A
(Klein, A.); Klein, FJ (Klein, F. J.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH
(Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuleshov, SV (Kuleshov,
S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.);
Langheinrich, J (Langheinrich, J.); Lawrence, D (Lawrence, D.); Livingston, K (Livingston, K.);
Lu, HY (Lu, H. Y.); MacCormick, M (MacCormick, M.); Markov, N (Markov, N.); Mattione, P
(Mattione, P.); Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer, CA
(Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mirazita, M (Mirazita, M.);
(Moriya, K.); Morrow, SA (Morrow, S. A.); Moteabbed, M (Moteabbed, M.); Munevar, E
Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.);
(Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk,
N.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Price, JW (Price, J. W.);
Procureur, S (Procureur, S.); Prok, Y (Prok, Y.); Raue, BA (Raue, B. A.); Ricco, G (Ricco, G.);
Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Ronchetti, F (Ronchetti, F.); Rosner, G
(Rosner, G.); Rossi, P (Rossi, P.); Sabatie, F (Sabatie, F.); Salamanca, J (Salamanca, J.);
G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov, N. V.); Smith, LC (Smith, L. C.);
Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS
(Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
P.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A
(Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.);
Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.);
Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Zana, L
(Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Bayesian analysis of pentaquark signals from CLAS data
Source: PHYSICAL REVIEW LETTERS, 100 (5): Art. No. 052001 FEB 8 2008
Abstract: We examine the results of two measurements by the CLAS collaboration, one of
which claimed evidence for a Theta(+) pentaquark, while the other found no such evidence. The
unique feature of these two experiments was that they were performed with the same
experimental setup. Using a Bayesian analysis, we find that the results of the two experiments
are in fact compatible with each other, but that the first measurement did not contain sufficient
information to determine unambiguously the existence of a Theta(+). Further, we suggest a
means by which the existence of a new candidate particle can be tested in a rigorous manner.
ISSN: 0031-9007
Record 173 of 499
Author(s): Park, K (Park, K.); Burkert, VD (Burkert, V. D.); Kim, W (Kim, W.); Aznauryan, IG
(Aznauryan, I. G.); Minehart, R (Minehart, R.); Smith, LC (Smith, L. C.); Joo, K (Joo, K.);
Elouadrhiri, L (Elouadrhiri, L.); Adams, G (Adams, G.); Amaryan, MJ (Amaryan, M. J.);
Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan, G.);
Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP
(Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Batourine, V (Batourine, V.);
Battaglieri, M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.);
Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Biselli, AS
(Biselli, A. S.); Blaszczyk, L (Blaszczyk, L.); Bonner, BE (Bonner, B. E.); Bookwalter, C
(Bradford, R.); Branford, D (Branford, D.); Briscoe, J (Briscoe, J.); Brooks, WK (Brooks, W.
K.); Bultmann, S (Bultmann, S.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.);
Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Casey, L (Casey, L.); Cazes, A
(Cazes, A.); Chen, S (Chen, S.); Cheng, L (Cheng, L.); Cole, PL (Cole, P. L.); Collins, P
Crabb, D (Crabb, D.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dale, D (Dale,
D.); Dashyan, N (Dashyan, N.); De Masi, R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis,
E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L
(Dennis, L.); Deur, A (Deur, A.); Dhamija, S (Dhamija, S.); Dharmawardane, KV
(Dharmawardane, K. V.); Dhuga, KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Djalali, C
(Djalali, C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.);
(Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.); Eugenio, P (Eugenio, P.);
Fatemi, R (Fatemi, R.); Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Feuerbach, RJ
(Feuerbach, R. J.); Forest, TA (Forest, T. A.); Fradi, A (Fradi, A.); Funsten, H (Funsten, H.);
Gabrielyan, MY (Gabrielyan, M. Y.); Garcon, M (Garcon, M.); Gavalian, G (Gavalian, G.);
Gevorgyan, N (Gevorgyan, N.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K.
L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gohn, W (Gohn, W.); Golovatch, E
(Golovatch, E.); Gonenc, A (Gonenc, A.); Gordon, CIO (Gordon, C. I. O.); Gothe, RW (Gothe,
R. W.); Graham, L (Graham, L.); Griffioen, KA (Griffioen, K. A.); Guidal, M (Guidal, M.);
Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.);
Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hafnaoui, K (Hafnaoui, K.); Hakobyan, H
(Hakobyan, H.); Hakobyan, RS (Hakobyan, R. S.); Hanretty, C (Hanretty, C.); Hardie, J (Hardie,
J.); Hassall, N (Hassall, N.); Heddle, D (Heddle, D.); Hersman, FW (Hersman, F. W.); Hicks, K
(Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde-Wright, CE (HydeWright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B.
S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M. M.); Jenkins, D (Jenkins, D.); Jo, HS (Jo, H.
S.); Johnstone, JR (Johnstone, J. R.); Juengst, HG (Juengst, H. G.); Kalantarians, N
(Kalantarians, N.); Keller, D (Keller, D.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker,
M.); Kim, KY (Kim, K. Y.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko, AV
(Klimenko, A. V.); Klusman, M (Klusman, M.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.);
(Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J
(Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J (Langheinrich, J.); Lawrence, D
(Lawrence, D.); Lee, T (Lee, T.); Li, J (Li, Ji); Lima, ACS (Lima, A. C. S.); Livingston, K
(Livingston, K.); Lu, HY (Lu, H. Y.); Lukashin, K (Lukashin, K.); MacCormick, M
(MacCormick, M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McAleer, S (McAleer,
S.); McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.); Mecking, BA (Mecking,
B. A.); Mehrabyan, S (Mehrabyan, S.); Melone, JJ (Melone, J. J.); Mestayer, MD (Mestayer, M.
D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Mirazita, M
(Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Morand, L (Morand,
L.); Moreno, B (Moreno, B.); Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.);
Moteabbed, M (Moteabbed, M.); Mueller, J (Mueller, J.); Munevar, E (Munevar, E.); Mutchler,
GS (Mutchler, G. S.); Nadel-Turonski, P (Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.);
Ostrovidov, AI (Ostrovidov, A. I.); Park, S (Park, S.); Pasyuk, E (Pasyuk, E.); Paterson, C
J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Polli, E
(Polli, E.); Popa, I (Popa, I.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM (Preedom, B. M.);
Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu, D.); Qin, LM (Qin,
L. M.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M
Rossi, P (Rossi, P.); Rowntree, D (Rowntree, D.); Rubin, PD (Rubin, P. D.); Sabatie, F (Sabatie,
F.); Saini, MS (Saini, M. S.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.); Santoro,
JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.); Schott, D (Schott, D.); Schumacher, RA
(Schumacher, R. A.); Serov, VS (Serov, V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D
(Sharov, D.); Shaw, J (Shaw, J.); Shvedunov, NV (Shvedunov, N. V.); Skabelin, AV (Skabelin,
A. V.); Smith, ES (Smith, E. S.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A
(Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE
(Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.);
Suleiman, R (Suleiman, R.); Taiuti, M (Taiuti, M.); Takeuchi, T (Takeuchi, T.); Tedeschi, DJ
(Tedeschi, D. J.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L
Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.);
Weygand, DP (Weygand, D. P.); Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH
(Wood, M. H.); Yegneswaran, A (Yegneswaran, A.); Yun, J (Yun, J.); Yurov, M (Yurov, M.);
Zana, L (Zana, L.); Zhang, B (Zhang, B.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW
(Zhao, Z. W.)
Group Author(s): Clas Collaboration
Title: Cross sections and beam asymmetries for (e)over-right-arrowp -> en pi(+) in the nucleon
resonance region for 1.7 <= Q(2)<= 4.5 GeV2
Abstract: The exclusive electroproduction process (e) over right arrowp -> e(')n pi(+) was
measured in the range of the photon virtuality Q(2)=1.7-4.5 GeV2, and the invariant mass range
for the n pi(+) system of W=1.15-1.7 GeV using the CEBAF Large Acceptance Spectrometer.
For the first time, these kinematics are probed in exclusive pi(+) production from protons with
nearly full coverage in the azimuthal and polar angles of the n pi(+) center-of-mass system. The
n pi(+) channel has particular sensitivity to the isospin 1/2 excited nucleon states, and together
with the p pi(0) final state will serve to determine the transition form factors of a large number of
resonances. The largest discrepancy between these results and present modes was seen in the
sigma(')(LT) structure function. In this experiment, 31,295 cross section and 4,184 asymmetry
data points were measured. Because of the large volume of data, only a reduced set of structure
functions and Legendre polynomial moments can be presented that are obtained in modelindependent fits to the differential cross sections.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.77.015208
Record 174 of 499
Funks, S (Funks, Seb.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
Punch, M (Punch, M.); Ranchon, S (Ranchon, S.); Raubenheimer, BC (Raubenheimer, B. C.);
Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.); Renaud, M (Renaud, M.); Ripken, J (Ripken,
J.); Rob, L (Rob, L.); Rolland, L (Rolland, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G
Santangelo, A (Santangelo, A.); Schlickeiser, R (Schlickeiser, R.); Schock, F (Schoeck, F.);
Schroder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg, S.);
Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spanglers, D
(Spanglers, D.); Stawarz, L (Stawarz, L.); Steenkamp, R (Steenkamp, R.); Stegmann, C
Title: HESS very-high-energy gamma-ray sources without identified counterparts
Abstract: Context. The detection of gamma rays in the very-high-energy (VHE) energy range
(100 GeV-100 TeV) provides a direct view of the parent population of ultra-relativistic particles
found in astrophysical sources. For this reason, VHE gamma rays are useful for understanding
the underlying astrophysical processes in non-thermal sources.
Aims. We investigate unidentified VHE gamma-ray sources that have been discovered with
HESS in the most sensitive blind survey of the Galactic plane at VHE energies conducted so far.
Methods. The HESS array of imaging atmospheric Cherenkov telescopes (IACTs) has a high
sensitivity compared with previous instruments (similar to 0.01 Crab in 25 h observation time for
a 5 sigma point-source detection). and with its large field of view, is well suited for scan-based
observations. The on-going HESS survey of the inner Galaxy has revealed a large number of
new VHE sources, and for each we attempt to associate the VHE emission with multiwavelength data in the radio through X-ray wavebands.
Results. For each of the eight unidentified VHE sources considered here, we present the energy
spectra and sky maps of the sources and their environment. The VHE morphology is compared
with available multi-wavelength data (mainly radio and X-rays). No plausible counterparts are
found.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078516
Record 175 of 499
Author(s): Demekhina, NA (Demekhina, N. A.); Karapetyan, GS (Karapetyan, G. S.)
Title: Multimode approximation for U-238 photofission at intermediate energies
Source: PHYSICS OF ATOMIC NUCLEI, 71 (1): 27-35 JAN 2008
Abstract: The yields of products originating from U-238 photofission are measured at the
bremsstrahlung endpoint energies of 50 and 3500 MeV. Charge and mass distributions of fission
fragments are obtained. Symmetric and asymmetric channels in U-238 photofission are singled
out on the basis of the model of multimode fission. This decomposition makes it possible to
estimate the contributions of various fission components and to calculate the fissilities of U-238
in the photon-energy regions under study.
ISSN: 1063-7788
DOI: 10.1134/S1063778808010031
Record 176 of 499
Aschenauer, EC (Aschenauer, E. C.); Augustyniak, W (Augustyniak, W.); Avetissian, A
(Avetissian, A.); Avetissian, E (Avetissian, E.); Barion, L (Barion, L.); Belostotski, S
(Belostotski, S.); Bianchi, N (Bianchi, N.); Blok, HP (Blok, H. P.); Bottcher, H (Bottcher, H.);
Bonomo, C (Bonomo, C.); Borissov, A (Borissov, A.); Bryzgalov, V (Bryzgalov, V.); Burns, J
(Burns, J.); Capiluppi, M (Capiluppi, M.); Capitani, GP (Capitani, G. P.); Cisbani, E (Cisbani,
E.); Ciullo, G (Ciullo, G.); Contalbrigo, M (Contalbrigo, M.); Dalpiaz, PF (Dalpiaz, P. F.);
Deconinck, W (Deconinck, W.); De Leo, R (De Leo, R.); Demey, M (Demey, M.); De Nardo, L
(De Nardo, L.); De Sanctis, E (De Sanctis, E.); Diefenthaler, M (Diefenthaler, M.); Di Nezza, P
(Di Nezza, P.); Dreschler, J (Dreschler, J.); Duren, M (Duren, M.); Ehrenfried, M (Ehrenfried,
M.); Elbakian, G (Elbakian, G.); Ellinghaus, F (Ellinghaus, F.); Fabbri, R (Fabbri, R.); Fantoni,
A (Fantoni, A.); Frullani, S (Frullani, S.); Gabbert, D (Gabbert, D.); Gapienko, G (Gapienko,
G.); Gapienko, V (Gapienko, V.); Garibaldi, F (Garibaldi, F.); Gavrilov, G (Gavrilov, G.);
Gharibyan, V (Gharibyan, V.); Giordano, E (Giordano, E.); Gliske, S (Gliske, S.); Guler, H
(Guler, H.); Hadjidakis, C (Hadjidakis, C.); Hasch, D (Hasch, D.); Hill, G (Hill, G.);
Hillenbrand, A (Hillenbrand, A.); Hoek, M (Hoek, M.); Hristova, I (Hristova, I.); Ilyichev, A
(Ilyichev, A.); Imazu, Y (Imazu, Y.); Ivanilov, A (Ivanilov, A.); Jackson, HE (Jackson, H. E.);
Joosten, S (Joosten, S.); Kaiser, R (Kaiser, R.); Keri, T (Keri, T.); Kinney, E (Kinney, E.);
Kisselev, A (Kisselev, A.); Kopytin, M (Kopytin, M.); Korotkov, V (Korotkov, V.);
Kravchenko, P (Kravchenko, P.); Krivokhijine, VG (Krivokhijine, V. G.); Lagamba, L
(Lagamba, L.); Lamb, R (Lamb, R.); Lapikas, L (Lapikas, L.); Lehmann, I (Lehmann, I.);
Lenisa, P (Lenisa, P.); Linden-Levy, LA (Linden-Levy, L. A.); Ruiz, AL (Ruiz, A. Lopez);
Lorenzon, W (Lorenzon, W.); Lu, S (Lu, S.); Lu, X (Lu, X.); Mahon, D (Mahon, D.); Makins,
NCR (Makins, N. C. R.); Marianski, B (Marianski, B.); Marukyan, H (Marukyan, H.); Miller,
CA (Miller, C. A.); Miyachi, Y (Miyachi, Y.); Muccifora, V (Muccifora, V.); Murray, M
(Murray, M.); Mussgiller, A (Mussgiller, A.); Nappi, E (Nappi, E.); Naryshkin, Y (Naryshkin,
Y.); Nass, A (Nass, A.); Negodaev, M (Negodaev, M.); Nowak, WD (Nowak, W. -D.);
Pappalardo, LL (Pappalardo, L. L.); Perez-Benito, R (Perez-Benito, R.); Pickert, N (Pickert, N.);
Raithel, M (Raithel, M.); Reimer, PE (Reimer, P. E.); Reolon, AR (Reolon, A. R.); Riedl, C
(Riedl, C.); Rith, K (Rith, K.); Rock, SE (Rock, S. E.); Rosner, G (Rosner, G.); Rostomyan, A
(Rostomyan, A.); Rubacek, L (Rubacek, L.); Rubin, J (Rubin, J.); Ryckbosch, D (Ryckbosch,
D.); Salomatin, Y (Salomatin, Y.); Schafer, A (Schafer, A.); Schnell, G (Schnell, G.); Schuler,
KP (Schuler, K. P.); Seitz, B (Seitz, B.); Shearer, C (Shearer, C.); Shibata, TA (Shibata, T. -A.);
Shutov, V (Shutov, V.); Stancari, M (Stancari, M.); Statera, M (Statera, M.); Steijger, JJM
(Steijger, J. J. M.); Stenzel, H (Stenzel, H.); Stewart, J (Stewart, J.); Stinzing, E (Stinzing, E.);
Streit, J (Streit, J.); Taroian, S (Taroian, S.); Thomas, E (Thomas, E.); Trzcinski, A (Trzcinski,
A.); Tytgat, M (Tytgat, M.); Vandenbroucke, A (Vandenbroucke, A.); Van der Nat, PB (Van der
Nat, P. B.); Van Der Steenhoven, G (Van der Steenhoven, G.); Van Haarlem, Y (Van Haarlem,
Y.); Van Hulse, C (Van Hulse, C.); Varanda, M (Varanda, M.); Veretennikov, D (Veretennikov,
D.); Vikhrov, V (Vikhrov, V.); Vilardi, I (Vilardi, I.); Vogel, C (Vogel, C.); Wang, S (Wang, S.);
Yaschenko, S (Yaschenko, S.); Ye, H (Ye, H.); Ye, Z (Ye, Z.); Yen, S (Yen, S.); Yu, W (Yu,
W.); Zeiler, D (Zeiler, D.); Zihlmann, B (Zihlmann, B.); Zupranski, P (Zupranski, P.)
Title: Cross sections for hard exclusive electroproduction of pi(+) mesons on a hydrogen target
Source: PHYSICS LETTERS B, 659 (3): 486-492 JAN 24 2008
Abstract: The exclusive electroproduction of pi(+) mesons was studied with the HERMES
spectrometer at the DESY laboratory by scattering 27.6 GeV positron and electron beams off an
internal hydrogen gas target. The virtual-photon cross sections were measured as a function of
the Mandelstarn variable t and the squared four momentum -Q(2) of the exchanged virtual
photon. A model calculation based on Generalized Parton Distributions is in fair agreement with
the data at low values of It I if power corrections are included. A model calculation based on the
Regge formalism gives a good description of the magnitude and the t and Q(2) dependences of
the cross section. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2007.11.079
Record 177 of 499
Author(s): Mkhitaryan, VV (Mkhitaryan, V. V.); Sedrakyan, AG (Sedrakyan, A. G.)
Title: Next-nearest-neighbor spin-spin and chiral-spin correlation functions in a generalized
XXX chain
Source: PHYSICAL REVIEW B, 77 (3): Art. No. 035111 JAN 2008
Abstract: We develop a simple technique for calculation of next-to-nearest-neighbor spin-spin
and chiral-spin correlation functions in an inhomogeneous XXX model. Exact expression of the
chiral-spin order parameter as a function of the model parameter, omega, is analytically found.
Using the same method we also calculate the next-to-nearest-neighbor spin-spin correlation
function. In the limit omega -> 0 it reproduces the known result for the vacuum expectation
value of the next-to-nearest-neighbor spins in the standard Heisenberg spin chain. The technique
is simple and can be extended for calculation of next-to-next-to-nearest-neighbor correlation
functions as well as for calculation of correlation functions in the XXZ model.
ISSN: 1098-0121
DOI: 10.1103/PhysRevB.77.035111
Record 178 of 499
Author(s): Allahverdyan, AE (Allahverdyan, A. E.); Saakian, DB (Saakian, D. B.)
Title: Thermodynamics of adiabatic feedback control
Source: EPL, 81 (3): Art. No. 30003 2008
Abstract: We study adaptive control of classical ergodic Hamiltonian systems, where the
controlling parameter varies slowly in time and is influenced by the system's state (feedback). An
effective adiabatic description is obtained for slow variables of the system. A general limit on the
feedback-induced negative-entropy production is uncovered. It relates the quickest negentropy
production to fluctuations of the control Hamiltonian. The method deals efficiently with the
entropy-information trade-off. Copyright (C) EPLA, 2008.
ISSN: 0295-5075
DOI: 10.1209/0295-5075/81/30003
Record 179 of 499
Author(s): Arnaldi, R (Arnaldi, R.); Banicz, K (Banicz, K.); Castor, J (Castor, J.); Chaurand, B
(Chaurand, B.); Cicalo, C (Cicalo, C.); Colla, A (Colla, A.); Cortese, P (Cortese, P.);
Damjanovic, S (Damjanovic, S.); David, A (David, A.); de Falco, A (de Falco, A.); Devaux, A
(Devaux, A.); Ducroux, L (Ducroux, L.); En'yo, H (En'yo, H.); Fargeix, J (Fargeix, J.); Ferretti,
A (Ferretti, A.); Floris, M (Floris, M.); Forster, A (Foerster, A.); Force, P (Force, P.); Guettet, N
(Guettet, N.); Guichard, A (Guichard, A.); Gulkanian, H (Gulkanian, H.); Heuser, JM (Heuser, J.
M.); Keil, M (Keil, M.); Kluberg, L (Kluberg, L.); Lourenco, C (Lourenco, C.); Lozano, J
(Lozano, J.); Manso, F (Manso, F.); Martins, P (Martins, P.); Masoni, A (Masoni, A.); Neves, A
(Neves, A.); Ohnishi, H (Ohnishi, H.); Oppedisano, C (Oppedisano, C.); Parracho, P (Parracho,
P.); Pillot, P (Pillot, P.); Poghosyan, T (Poghosyan, T.); Puddu, G (Puddu, G.); Radermacher, E
(Radermacher, E.); Ramalhete, P (Ramalhete, P.); Rosinsky, P (Rosinsky, P.); Scomparin, E
(Scomparin, E.); Seixas, J (Seixas, J.); Serci, S (Serci, S.); Shahoyan, R (Shahoyan, R.);
Sonderegger, P (Sonderegger, P.); Specht, HJ (Specht, H. J.); Tieulent, R (Tieulent, R.); Usai, G
(Usai, G.); Veenhof, R (Veenhof, R.); Wohri, HK (Wohri, H. K.)
Group Author(s): NA60 Collaboration
Title: Evidence for radial flow of thermal dileptons in high-energy nuclear collisions
Source: PHYSICAL REVIEW LETTERS, 100 (2): Art. No. 022302 JAN 18 2008
Abstract: The NA60 experiment at the CERN SPS has studied low-mass dimuon production in
158A GeV In-In collisions. An excess of pairs above the known meson decays has been reported
before. We now present precision results on the associated transverse momentum spectra. The
slope parameter T-eff extracted from the spectra rises with dimuon mass up to the rho, followed
by a sudden decline above. While the initial rise is consistent with the expectations for radial
flow of a hadronic decay source, the decline signals a transition to an emission source with much
smaller flow. This may well represent the first direct evidence for thermal radiation of partonic
origin in nuclear collisions.
ISSN: 0031-9007
Record 180 of 499
Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Ataie,
Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
Schrock, R (Schroeck, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S (Schwarzburg, S.);
Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D
Title: Upper limits from HESS active galactic nuclei observations in 2005-2007
Abstract: Aims. Very high energy (VHE; E > 100 GeV) gamma-ray studies were performed for
18 active galactic nuclei (AGN) from a variety of AGN classes.
Methods. VHE observations of a sample of 14 AGN, considered candidate VHE emitters, were
made with the High Energy Stereoscopic System (HESS) between January 2005 and July 2007.
Large-zenith-angle observations of three northern AGN (Mkn 421, Mkn 501, 1ES 1218+304),
known to emit VHE gamma-rays, were also performed in order to sample their spectral energy
distributions (SEDs) above 1 TeV. In addition, the VHE flux from 1ES 1101-232, previously
detected by HESS in 2004-2005, was monitored during 2006 and 2007.
Results. As significant detections from the HESS observation program are reported elsewhere,
the results reported here are primarily integral flux upper limits. The average exposure for each
of the 14 VHE-candidate AGN is similar to 7 h live time, and the observations have an average
energy threshold between 230 GeV and 590 GeV. Upper limits for these 14 AGN range from <
0.9% to < 4.9% of the Crab Nebula flux, and eight of these are the most constraining ever
reported for the object. The brief (< 2.2 h each) large-zenith-angle observations yield upper
limits for Mkn 501 (< 20% Crab above 2.5 TeV) and 1ES 1218+304 (< 17% Crab above 1.0
TeV), and a marginal detection (3.5 sigma) of Mkn 421 (50% Crab above 2.1 TeV). 1ES 1101232 was marginally detected (3.6 sigma, 1.7% Crab above 260 GeV) during the 2006 (13.7 h
live time) observations, but not in the 2007 (4.6 h live time) data. The upper limit in 2007 (<
1.9% Crab above 260 GeV) is below the average flux measured by HESS from 2004-2006.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078604
Record 181 of 499
Author(s): Khachatryan, HG (Khachatryan, H. G.); Vereshchagin, GV (Vereshchagin, G. V.);
Yegortan, G (Yegortan, G.)
Title: Luminosity distance in GX cosmological models
METHODS, 122 (2): 197-200 FEB 2007
Abstract: We derive the luminosity distance equation in Gurzadyan-Xue cosmological models
and compared it with available supernovae and radio galaxies data sets. We found that the
luminosity distance does not depend explicitly on the speed of light and the gravitation constant,
but depends only on the matter parameter (GX-invariant) and the curvature.
ISSN: 1594-9982
DOI: 10.1393/ncb/i2007-10361-3
Record 182 of 499
Author(s): Nasseripour, R (Nasseripour, R.); Wood, MH (Wood, M. H.); Djalali, C (Djalali, C.);
Weygand, DP (Weygand, D. P.); Tur, C (Tur, C.); Mosel, U (Mosel, U.); Muehlich, P
(Muehlich, P.); Adams, G (Adams, G.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P
Blaszczyk, L (Blaszczyk, L.); Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.);
WK (Brooks, W. K.); Bueltmann, S (Bueltmann, S.); Burkert, VD (Burkert, V. D.); Butuceanu,
C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS
(Carman, D. S.); Carnahan, B (Carnahan, B.); Casey, L (Casey, L.); Chen, S (Chen, S.); Cole, PL
(Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Crabb, D (Crabb, D.); Crannell,
H (Crannell, H.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.); Dashyan, N (Dashyan,
N.); De Masi, R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E (De Sanctis, E.);
Degtyarenko, PV (Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Deur, A
(Deur, A.); Dharmawardane, KV (Dharmawardane, K. V.); Dickson, R (Dickson, R.); Dodge,
GE (Dodge, G. E.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.); Dytman, S (Dytman,
S.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El
Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.); Fedotov, G
(Fedotov, G.); Feldman, G (Feldman, G.); Feuerbach, RJ (Feuerbach, R. J.); Funsten, H
(Funsten, H.); Garcon, M (Garcon, M.); Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G.
P.); Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.);
Gordon, CIO (Gordon, C. I. O.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.);
Guidal, M (Guidal, M.); Guler, N (Guler, N.); Guo, L (Guo, L.); Gyurjyan, V (Gyurjyan, V.);
Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hakobyan,
RS (Hakobyan, R. S.); Hanretty, C (Hanretty, C.); Hardie, J (Hardie, J.); Hersman, FW
(Juengst, H. G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M
(Khandaker, M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko,
AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L.
H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov,
SV (Kuleshov, S. V.); Lachniet, J (Lachniet, J.); Laget, JM (Laget, J. M.); Langheinrich, J
(Langheinrich, J.); Lawrence, D (Lawrence, D.); Li, J (Li, Ji); Livingston, K (Livingston, K.);
Lu, HY (Lu, H. Y.); MacCormick, M (MacCormick, M.); Markov, N (Markov, N.); Mattione, P
(Mattione, P.); McAleer, S (McAleer, S.); McKinnon, B (McKinnon, B.); McNabb, JWC
(McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mehrabyan, S (Mehrabyan, S.); Melone, JJ
(Melone, J. J.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe,
T.); Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.);
Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Moriya, K (Moriya, K.); Morrow, SA
A.); Nozar, M (Nozar, M.); Osipenko, M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.);
Park, K (Park, K.); Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S.
Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko,
O (Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Preedom, BM (Preedom, B. M.); Price, JW
(Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.);
Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie,
B. G.); Ronchetti, F (Ronchetti, F.); Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Sabatie, F
(Sabatie, F.); Salamanca, J (Salamanca, J.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J.
P.); Sapunenko, V (Sapunenko, V.); Schumacher, RA (Schumacher, R. A.); Serov, VS (Serov,
V. S.); Sharabian, YG (Sharabian, Y. G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov,
N. V.); Smith, ES (Smith, E. S.); Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D
(Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S
(Stepanyan, S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler, P.); Strakovsky, II (Strakovsky, I.
I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D. J.); Tkabladze, A
(Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.); Ungaro, M (Ungaro, M.);
Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.);
Weinstein, LB (Weinstein, L. B.); Williams, M (Williams, M.); Wolin, E (Wolin, E.);
Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, B (Zhang, B.); Zhang, J (Zhang,
J.); Zhao, B (Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Search for medium modifications of the rho meson
Abstract: The photoproduction of vector mesons on various nuclei has been studied using the
CLAS detector at Jefferson Laboratory. The vector mesons, rho, omega, and phi, are observed
via their decay to e(+)e(-), in order to reduce the effects of final-state interactions in the nucleus.
Of particular interest are possible in-medium effects on the properties of the rho meson. The rho
mass spectrum is extracted from the data on various nuclei, H-2, C, Fe, and Ti. We observe no
significant mass shift and some broadening consistent with expected collisional broadening for
the rho meson.
ISSN: 0031-9007
Record 183 of 499
Author(s): Akopov, N (Akopov, N.); Grigoryan, L (Grigoryan, L.); Akopov, Z (Akopov, Z.)
Title: Simple parameterization of nuclear attenuation data
Source: PHYSICAL REVIEW C, 76 (6): Art. No. 065203 DEC 2007
Abstract: Based on the semi-inclusive deep inelastic scattering data obtained by the HERMES
experiment on deuterium, nitrogen and krypton nuclei, it is shown that a ratio of multiplicities on
nucleus and deuterium (per nucleon) for given hadron R-M(h) can be parametrized in a form of a
linear polynomial a(11)+tau a(12), where tau is the formation time, which depends on the energy
of the virtual photon nu and fraction of that energy z carried by the final hadron. Three widely
known parametrizations for tau were used for the performed fit. The fit parameters a(11) and
a(12) do not depend on nu and z.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.065203
Record 184 of 499
V.); Dazzi, F (Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C (Delgado, C.); Reyes,
RDL (Reyes, R. de los); De Lotto, B (De Lotto, B.); Domingo-Santamaria, E (DomingoSantamaria, E.); Dorner, D (Dorner, D.); Doro, M (Doro, M.); Errando, M (Errando, M.);
(Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, R (Garcia-Lopez, R. J.); Garczarczyk, M
Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.);
Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E (Lindfors, E.); Lombardi, S
(Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez, M (Lopez, M.); Lorenz, E
K.); Mansutti, O (Mansutti, O.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin,
D (Mazin, D.); Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer, M.);
Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.);
Panniello, M (Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, J (Paredes, J. M.); Pasanen, M
(Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Puchades, N (Puchades, N.);
Prandini, E (Prandini, E.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo,
N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaeae, A.); Sobczynska, D (Sobczynska, D.);
Title: Unfolding of differential energy spectra in the MAGIC experiment
583 (2-3): 494-506 DEC 21 2007
Abstract: The paper describes the different methods, used in the MAGIC experiment, to unfold
experimental energy distributions of cosmic ray particles (gamma-rays). Questions and problems
related to the unfolding are discussed. Various procedures are proposed which can help to make
the unfolding robust and reliable. The different methods and procedures are implemented in the
MAGIC software and are used in most of the analyses. (c) 2007 Elsevier B.V. All rights
reserved.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2007.09.048
Record 185 of 499
Author(s): Hovhannisyan, VV (Hovhannisyan, V. V.); Ananikyan, LN (Ananikyan, L. N.);
Ananikian, NS (Ananikian, N. S.)
Title: Magnetization plateaus on the zigzag ladder with two-, and three-site exchanges
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 21 (20): 3567-3579 AUG
10 2007
Abstract: We consider the Heisenberg model with two-, and three-spin exchange interactions on
a zigzag ladder in a strong magnetic field. Using the recursion method for the partition function
in Ising approximation we have found exact results for the magnetization. We have shown the
existence of magnetization plateaus in the case of mutual two-, and three-spin exchanges at low
temperatures and different exchange parameters. The system exhibits different magnetic
behaviors, depending on the values of the exchange parameters.
ISSN: 0217-9792
Record 186 of 499
Author(s): Clasie, B (Clasie, B.); Qian, X (Qian, X.); Arrington, J (Arrington, J.); Asaturyan, R
(Asaturyan, R.); Benmokhtar, F (Benmokhtar, F.); Boeglin, W (Boeglin, W.); Bosted, P (Bosted,
P.); Bruell, A (Bruell, A.); Christy, ME (Christy, M. E.); Chudakov, E (Chudakov, E.); Cosyn,
W (Cosyn, W.); Dalton, MM (Dalton, M. M.); Daniel, A (Daniel, A.); Day, D (Day, D.); Dutta,
D (Dutta, D.); El Fassi, L (El Fassi, L.); Ent, R (Ent, R.); Fenker, HC (Fenker, H. C.); Ferrer, J
(Ferrer, J.); Fomin, N (Fomin, N.); Gao, H (Gao, H.); Garrow, K (Garrow, K.); Gaskell, D
(Gaskell, D.); Gray, C (Gray, C.); Horn, T (Horn, T.); Huber, GM (Huber, G. M.); Jones, MK
(Jones, M. K.); Kalantarians, N (Kalantarians, N.); Keppel, CE (Keppel, C. E.); Kramer, K
(Kramer, K.); Larson, A (Larson, A.); Li, Y (Li, Y.); Liang, Y (Liang, Y.); Lung, AF (Lung, A.
F.); Malace, S (Malace, S.); Markowitz, P (Markowitz, P.); Matsumura, A (Matsumura, A.);
Meekins, DG (Meekins, D. G.); Mertens, T (Mertens, T.); Miller, GA (Miller, G. A.); Miyoshi, T
(Miyoshi, T.); Mkrtchyan, H (Mkrtchyan, H.); Monson, R (Monson, R.); Navasardyan, T
(Navasardyan, T.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Okayasu, Y
(Okayasu, Y.); Opper, AK (Opper, A. K.); Perdrisat, C (Perdrisat, C.); Punjabi, V (Punjabi, V.);
Rauf, AW (Rauf, A. W.); Rodriquez, VM (Rodriquez, V. M.); Rohe, D (Rohe, D.); Ryckebusch,
J (Ryckebusch, J.); Seely, J (Seely, J.); Segbefia, E (Segbefia, E.); Smith, GR (Smith, G. R.);
Strikman, M (Strikman, M.); Sumihama, M (Sumihama, M.); Tadevosyan, V (Tadevosyan, V.);
Tang, L (Tang, L.); Tvaskis, V (Tvaskis, V.); Villano, A (Villano, A.); Vulcan, WF (Vulcan, W.
F.); Wesselmann, FR (Wesselmann, F. R.); Wood, SA (Wood, S. A.); Yuan, L (Yuan, L.);
Zheng, XC (Zheng, X. C.)
Title: Measurement of nuclear transparency for the A(e,e 'pi(+)) reaction
Abstract: We have measured the nuclear transparency of the A(e,e(')pi(+)) process in H-2, C-12,
Al-27, Cu-63, and Au-197 targets. These measurements were performed at the Jefferson
Laboratory over a four momentum transfer squared range Q(2) = 1.1 to 4.7 (GeV/c)(2). The
nuclear transparency was extracted as the super-ratio of (sigma(A)/sigma(H)) from data to a
model of pion-electroproduction from nuclei without pi-N final-state interactions. The Q(2) and
atomic number dependence of the nuclear transparency both show deviations from traditional
nuclear physics expectations and are consistent with calculations that include the quantum
chromodynamical phenomenon of color transparency.
ISSN: 0031-9007
Record 187 of 499
Funk, S (Funk, Seb.); Fuessling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
Wilhelmi, EDO (Wilhelmi, E. de Ona); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.);
Ostrowski, M (Ostrowski, M.); Panter, M (Panter, M. .); Pedaletti, G (Pedaletti, G.); Pelletier, G
(Rowell, G.); Rudak, B (Rudak, B.); Ruppell, J (Ruppell, J.); Sahakian, V (Sahakian, V.);
Title: HESS observations and VLT spectroscopy of PG 1553+113
Abstract: Aims. The properties of the very high energy (VHE; E > 100 GeV) gamma-ray
emission from the high-frequency peaked BL Lac PG 1553+113 are investigated. An attempt is
made to measure the currently unknown redshift of this object.
Methods. VHE Observations of PG 1553+113 were made with the High Energy Stereoscopic
System (HESS) in 2005 and 2006. H + K (1.45 - 2.45 mu m) spectroscopy of PG 1553+113 was
performed in March 2006 with SINFONI, an integral field spectrometer of the ESO Very Large
Telescope (VLT) in Chile.
Results. A VHE signal, similar to 10 standard deviations, is detected by HESS during the 2 years
of observations (24.8 h live time). The integral flux above 300 GeV is (4.6 +/- 0.6(stat)+/0.9(syst)) x 10(-12) cm(-2) s(-1), corresponding to similar to 3.4% of the flux from the Crab
Nebula above the same threshold. The time-averaged energy spectrum is measured from 225
GeV to similar to 1.3 TeV, and is characterized by a very soft power law (photon index of F=4.5
+/- 0.3(stat)+/- 0.1(syst)). No evidence for any flux or spectral variations is found on any
sampled time scale within the VHE data. The redshift of PG 1553+113 could not be determined.
Indeed, even though the measured SINFONI spectrum is the most sensitive ever reported for this
object at near infrared wavelengths, and the sensitivity is comparable to the best spectroscopy at
other wavelengths, no absorption or emission lines were found in the H+K spectrum presented
here.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078603
Record 188 of 499
Author(s): Manvelyan, R (Manvelyan, Ruben); Mkrtchyan, K (Mkrtchyan, Karapet);
Mkrtchyan, R (Mkrtchyan, Ruben)
Title: Conformal invariant powers of the Laplacian, Fefferman-Graham ambient metric and
Ricci gauging
Source: PHYSICS LETTERS B, 657 (1-3): 112-119 NOV 29 2007
Abstract: The hierarchy of conformally invariant kth powers of the Laplacian acting on a scalar
field with scaling dimensions Delta((k)) = k - d/2, k = 1, 2, 3, as obtained in the recent work [R.
Manvelyan, D.H. Tchrakian, Phys. Lett. B 644 (2007) 370, hep-th/0611077] is rederived using
the Fefferman-Graham (d + 2)-dimensional ambient space approach. The corresponding
mysterious "holographic" structure of these operators is clarified. We explore also the (d + 2)dimensional ambient space origin of the Ricci gauging procedure proposed by A. Iorio, L.
O'Raifeartaigh, I. Sachs and C. Wiesendanger as another method of constructing the Weyl
invariant Lagrangians. The corresponding gauged ambient metric, Fefferman-Graham expansion
and extended Penrose-Brown-Henneaux transformations are proposed and analyzed. (C) 2007
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2007.10.014
Record 189 of 499
Author(s): Izmailian, NS (Izmailian, N. Sh.); Hu, CK (Hu, Chin-Kun)
Title: Finite-size effects for the Ising model on helical tori
Source: PHYSICAL REVIEW E, 76 (4): Art. No. 041118 Part 1 OCT 2007
Abstract: We analyze the exact partition function of the Ising model on a square lattice under
helical boundary conditions obtained by Liaw [Phys. Rev. E 73, 055101(R) (2006)]. Based on
such an expression, we then extend the algorithm of Ivashkevich, Izmailian, and Hu [J. Phys. A
35, 5543 (2002)] to derive an exact asymptotic expansion of the logarithm of the partition
function and its first to fourth derivatives at the critical point. From such results, we find that the
shift exponent for the specific heat is lambda=1 for all values of the helicity factor d. We also
find that finite-size corrections for the free energy, the internal energy, and the specific heat of
the model in a crucial way depend on the helicity factor of the lattice.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.76.041118
Record 190 of 499
Author(s): Mibe, T (Mibe, T.); Gao, H (Gao, H.); Hicks, K (Hicks, K.); Kramer, K (Kramer,
K.); Stepanyan, S (Stepanyan, S.); Tedeschi, DJ (Tedeschi, D. J.); Amaryan, MJ (Amaryan, M.
J.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.); Asryan, G (Asryan,
G.); Audit, G (Audit, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie,
N (Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Battaglieri, M (Battaglieri,
M.); Bedlinskiy, I (Bedlinskiy, I.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.);
Berman, BL (Berman, B. L.); Biselli, AS (Biselli, A. S.); Blaszczyk, L (Blaszczyk, L.);
Bouchigny, S (Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.);
Branford, D (Branford, D.); Briscoe, WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.);
Bultmann, S (Bueltmann, S.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu, C.);
Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.); Chen,
S (Chen, S.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.); Crabb, D
(Crabb, D.); Crannell, H (Crannell, H.); Crede, V (Crede, V.); Cummings, JP (Cummings, J. P.);
Dashyan, N (Dashyan, N.); De Masi, R (De Masi, R.); De Vita, R (De Vita, R.); De Sanctis, E
(De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Deur, A (Deur, A.); Dharmawardane,
KV (Dharmawardane, K. V.); Dickson, R (Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE
(Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger, M (Dugger, M.);
Dzyubak, OP (Dzyubak, O. P.); Garcon, M (Garcon, M.); Gavalian, G (Gavalian, G.); Gilfoyle,
GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT
(Goetz, J. T.); Gonenc, A (Gonenc, A.); Gordon, CIO (Gordon, C. I. O.); Gothe, RW (Gothe, R.
W.); Griffioen, KA (Griffioen, K. A.); Guidal, M (Guidal, M.); Guler, N (Guler, N.); Guo, L
(Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hafidi, K (Hafidi, K.);
Hakobyan, H (Hakobyan, H.); Hakobyan, RS (Hakobyan, R. S.); Hanretty, C (Hanretty, C.);
Hardie, J (Hardie, J.); Hersman, FW (Hersman, F. W.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M
(Holtrop, M.); Hyde-Wright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG
(Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Isupov, EL (Isupov, E. L.); Ito, MM (Ito, M.
M.); Jenkins, D (Jenkins, D.); Jo, HS (Jo, H. S.); Johnstone, JR (Johnstone, J. R.); Joo, K (Joo,
K.); Juengst, HG (Juengst, H. G.); Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.);
Khandaker, M (Khandaker, M.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F.
J.); Klimenko, AV (Klimenko, A. V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer,
LH (Kramer, L. H.); Kubarovsky, V (Kubarovsky, V.); Kuhn, J (Kuhn, J.); Kuhn, SE (Kuhn, S.
E.); Kuleshov, SV (Kuleshov, S. V.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.);
T (Lee, T.); Li, J (Li, J.); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick, M
(MacCormick, M.); Marchand, C (Marchand, C.); Markov, N (Markov, N.); Mattione, P
(Mattione, P.); McKinnon, B (McKinnon, B.); Mecking, BA (Mecking, B. A.); Melone, JJ
(Melone, J. J.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mikhailov, K
(Mikhailov, K.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.); Miskimen, R
(Miskimen, R.); Mokeev, V (Mokeev, V.); Moriya, K (Moriya, K.); Morrow, SA (Morrow, S.
A.); Moteabbed, M (Moteabbed, M.); Munevar, E (Munevar, E.); Mutchler, GS (Mutchler, G.
S.); Nadel-Turonski, P (Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.); Niccolai, S
(Niccolai, S.); Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB
(Niczyporuk, B. B.); Niroula, MR (Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); Nozar, M
(Nozar, M.); Osipenko, M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park,
K.); Pasyuk, E (Pasyuk, E.); Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos);
(Pogorelko, O.); Pozdniakov, S (Pozdniakov, S.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.);
Protopopescu, D (Protopopescu, D.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco,
G (Ricco, G.); Ripani, M (Ripani, M.); Ritchie, BG (Ritchie, B. G.); Ronchetti, F (Ronchetti, F.);
Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Sabatie, F (Sabatie, F.); Salamanca, J (Salamanca,
J.); Salgado, C (Salgado, C.); Santoro, JP (Santoro, J. P.); Sapunenko, V (Sapunenko, V.);
G.); Sharov, D (Sharov, D.); Shvedunov, NV (Shvedunov, N. V.); Smith, ES (Smith, E. S.);
Smith, LC (Smith, L. C.); Sober, DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A
(Stavinsky, A.); Stepanyan, SS (Stepanyan, S. S.); Stokes, BE (Stokes, B. E.); Stoler, P (Stoler,
P.); Strakovsky, II (Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Thoma, U
(Thoma, U.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.); Todor, L (Todor,
L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M. F.); Vlassov, AV
(Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.); Weygand, DP
H.); Yegneswaran, A (Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B
(Zhao, B.); Zhao, ZW (Zhao, Z. W.)
Title: Measurement of coherent phi-meson photoproduction from the deuteron at low energies
Abstract: The cross section and decay angular distributions for the coherent phi-meson
photoproduction on the deuteron have been measured for the first time up to a squared fourmomentum transfer t=(p(gamma)-p(phi))(2)=-2 GeV2/c(2), using the CLAS detector at the
Thomas Jefferson National Accelerator Facility. The cross sections are compared with
predictions from a rescattering model. In a framework of vector meson dominance, the data are
consistent with the total phi-N cross section sigma(phi N) at about 10 mb. If vector meson
dominance is violated, a larger sigma(phi N) is possible by introducing a larger t slope for the
phi N ->phi N process than that for the gamma N ->phi N process. The decay angular
distributions of the phi are consistent with helicity conservation.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.052202
Record 191 of 499
Author(s): Dohrmann, F (Dohrmann, F.); Ahmidouch, A (Ahmidouch, A.); Armstrong, CS
(Armstrong, C. S.); Arrington, J (Arrington, J.); Asaturyan, R (Asaturyan, R.); Avery, S (Avery,
S.); Bailey, K (Bailey, K.); Bitao, H (Bitao, H.); Breuer, H (Breuer, H.); Brown, DS (Brown, D.
S.); Carlini, R (Carlini, R.); Cha, J (Cha, J.); Chant, N (Chant, N.); Christy, E (Christy, E.);
Cochran, A (Cochran, A.); Cole, L (Cole, L.); Crowder, J (Crowder, J.); Danagoulian, S
(Danagoulian, S.); Elaasar, M (Elaasar, M.); Ent, R (Ent, R.); Fenker, H (Fenker, H.); Fujii, Y
(Fujii, Y.); Gan, L (Gan, L.); Garrow, K (Garrow, K.); Geesaman, DF (Geesaman, D. F.);
Gueye, P (Gueye, P.); Hafidi, K (Hafidi, K.); Hinton, W (Hinton, W.); Juengst, H (Juengst, H.);
Keppel, C (Keppel, C.); Liang, Y (Liang, Y.); Liu, JH (Liu, J. H.); Lung, A (Lung, A.); Mack, D
(Mack, D.); Markowitz, P (Markowitz, P.); Mitchell, J (Mitchell, J.); Miyoshi, T (Miyoshi, T.);
Mkrtchyan, H (Mkrtchyan, H.); Mtingwa, SK (Mtingwa, S. K.); Mueller, B (Mueller, B.);
Niculescu, G (Niculescu, G.); Niculescu, I (Niculescu, I.); Potterveld, D (Potterveld, D.); Raue,
BA (Raue, B. A.); Reimer, PE (Reimer, P. E.); Reinhold, J (Reinhold, J.); Roche, J (Roche, J.);
Sarsour, M (Sarsour, M.); Sato, Y (Sato, Y.); Segel, RE (Segel, R. E.); Semenov, A (Semenov,
A.); Stepanyan, S (Stepanyan, S.); Tadevosyan, V (Tadevosyan, V.); Tajima, S (Tajima, S.);
Tang, L (Tang, L.); Uzzle, A (Uzzle, A.); Wood, S (Wood, S.); Yamaguchi, H (Yamaguchi, H.);
Yan, C (Yan, C.); Yuan, L (Yuan, L.); Zeidman, B (Zeidman, B.); Zeier, M (Zeier, M.);
Zihlmann, B (Zihlmann, B.)
Title: Quasifree Lambda,Sigma(0), and Sigma(-) electroproduction from H-1,H-2, He-3,He-4,
and carbon
Abstract: Kaon electroproduction from light nuclei and hydrogen, using H-1, H-2, He-3, He-4,
and carbon targets has been measured at the Thomas Jefferson National Accelerator Facility. The
quasifree angular distributions of Lambda and Sigma hyperons were determined at Q(2)=0.35
(GeV/c)(2) and W=1.91 GeV. Electroproduction on hydrogen was measured at the same
kinematics for reference.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.054004
Record 192 of 499
Author(s): Khachatryan, HG (Khachatryan, H. G.)
Title: Invariants and solutions of Gurzadyan-Xue dark energy cosmological models
Source: MODERN PHYSICS LETTERS A, 22 (5): 333-338 FEB 20 2007
Abstract: We have derived the invariants of cosmological models with Gurzadyan-Xue (GX)
dark energy, along with the solutions for any time-dependent light speed and gravitational
constant. The correspondance of the invariants with the separatrices found earlier for the GXmodel is shown, and hence the basis of then detected hidden symmetry is now revealed.
Solutions are derived both for radiation and matter models, as well as with both components. It is
interesting that, the solutions for the scale factor do not depend on the gravitational constant but
only on th "time evolution" of the speed of light. GX-invariants act as efficient tools describing
the models and the phases of the cosmological expansion.
ISSN: 0217-7323
Record 193 of 499
Author(s): Balabekyan, AR (Balabekyan, A. R.); Danagulyan, AS (Danagulyan, A. S.);
Drnoyan, JR (Drnoyan, J. R.); Hovhannisyan, GH (Hovhannisyan, G. H.); Demekhina, NA
(Demekhina, N. A.); Adam, J (Adam, J.); Kalinnikov, VG (Kalinnikov, V. G.); Krivopustov, MI
(Krivopustov, M. I.); Pronskikh, VS (Pronskikh, V. S.); Stegailov, VI (Stegailov, V. I.);
Solnyshkin, AA (Solnyshkin, A. A.); Chaloun, P (Chaloun, P.); Tsoupko-Sitnikov, VM
(Tsoupko-Sitnikov, V. M.); Mashnik, SG (Mashnik, S. G.); Gudima, KK (Gudima, K. K.)
Title: Recoil Products from p+Sn-118 and d+Sn-118 at 3.65 GeV/A
Source: PHYSICS OF ATOMIC NUCLEI, 70 (11): 1889-1897 NOV 2007
Abstract: The recoil properties of the product nuclei from the interaction of 3.65-GeV/nucleon
protons and deuterons from the Nuclotron and Synchrophasotron of the Laboratory of High
Energies (LHE), Joint Institute for Nuclear Research (JINR) at Dubna, with a Sn-118 target have
been studied using catcher foils. The experimental data were analyzed using the mathematical
formalism of the standard two-step vector model. The analysis of kinematical characteristics of
the light and rnedium-mass reaction products confirmed the contribution of fragmentation (or
multifragmentation) processes in the production of these nuclei. The comparison of the results
for protons and deuterons was made. The longitudinal momenta transferred to the target in the
interaction with protons and deuterons were similar and was shown to depend only on the
velocity, but not on the mass of projectile. Three different Los Alamos versions of the quarkgluon-string model (LAQGSM) were used for the discussion of our experimental results,
ISSN: 1063-7788
DOI: 10.1134/S1063778807110087
Record 194 of 499
Author(s): Agababyan, NM (Agababyan, N. M.); Ammosov, VV (Ammosov, V. V.); Atayan, M
(Atayan, M.); Grigoryan, N (Grigoryan, N.); Gulkanyan, H (Gulkanyan, H.); Ivanilov, AA
(Ivanilov, A. A.); Karamyan, Z (Karamyan, Zh.); Korotkov, VA (Korotkov, V. A.)
Title: A study of the nuclear-medium influence on rho(0) neutrinoproduction
Abstract: The nuclear effects in rho(0)-meson neutrino production are investigated using the
data obtained with the SKAT bubble chamber. The nuclear-medium influence on the rho(0) total
yield and inclusive distributions On z = E-p/v and Feynman x(F) variable is found to be
approximately the same as for pions. It is shown that these distributions with increasing A tend
to shift toward smaller values of z and x(F), thus indicating an increasing role of secondary
intranuclear interactions. The predictions of a simple model incorporating the latter are found to
be in qualitative agreement with experimental data.
ISSN: 1063-7788
DOI: 10.1134/S1063778807110099
Record 195 of 499
Title: The characteristics of neutrino-nuclear reactions at E-v=1-3 GeV
Abstract: The characteristics of the charged-current neutrino-nuclear interactions are
investigated for the first time at E-v = 1-3 GeV using the data obtained with SKAT propanefreon bubble chamber irradiated in the neutrino beam at the Serpukhov accelerator. The E,
dependence of the mean multiplicities of different types of secondary particles and their
multiplicity, momentum, and angular distributions are measured.
ISSN: 1063-7788
DOI: 10.1134/S1063778807110105
Record 196 of 499
Author(s): Bag, BC (Bag, Bidhan Chandra); Petrosyan, KG (Petrosyan, K. G.); Hu, CK (Hu,
Chin-Kun)
Title: Influence of noise on the synchronization of the stochastic Kuramoto model
Source: PHYSICAL REVIEW E, 76 (5): Art. No. 056210 Part 2 NOV 2007
Abstract: We consider the Kuramoto model of globally coupled phase oscillators subject to
Ornstein-Uhlenbeck and non-Gaussian colored noise and investigate the influence of noise on
the order parameter of the synchronization process. We use numerical methods to study the
dependence of the threshold as well as the maximum degree of synchronization on the
correlation time and the strength of the noise, and find that the threshold of synchronization
strongly depends on the nature of the noise. It is found to be lower for both the OrnsteinUhlenbeck and non-Gaussian processes compared to the case of white noise. A finite correlation
time also favors the achievement of the full synchronization of the system, in contract to the
white noise process, which does not allow that. Finally, we discuss possible applications of the
stochastic Kuramoto model to oscillations taking place in biochemical systems.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.76.056210
Record 197 of 499
Author(s): Bellucci, S (Bellucci, S.); Krivonos, S (Krivonos, S.); Ohanyan, V (Ohanyan, V.)
Title: N=4 supersymmetric McIntosh-Cisneros-Zwanziger-Kepler systems on S-3
Abstract: Proceeding from the superfield action for N=4, d=1 nonlinear supermultiplet,
equipped with the most general potential term, we find the action describing a charged particle
on the sphere S-3 in the field of n fixed Dirac dyons. We construct the supercharges and
Hamiltonian and analyze some particularly interesting potentials corresponding to the N=4
supersymmetric extension of the integrable one- and two-center McIntosh-Cisneros-ZwanzigerKepler systems on S-3.
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.76.105023
Record 198 of 499
Amarian, M (Amarian, M.); Ammosov, VV (Ammosov, V. V.); Andrus, A (Andrus, A.);
Aschenauer, EC (Aschenauer, E. C.); Augustyniak, W (Augustyniak, W.); Avakian, R (Avakian,
R.); Avetissian, A (Avetissian, A.); Avetissian, E (Avetissian, E.); Bailey, P (Bailey, P.);
Baturin, V (Baturin, V.); Baumgarten, C (Baumgarten, C.); Beckmann, M (Beckmann, M.);
Belostotski, S (Belostotski, S.); Bernreuther, S (Bernreuther, S.); Bianchi, N (Bianchi, N.); Blok,
HP (Blok, H. P.); Bottcher, H (Boettcher, H.); Borissov, A (Borissov, A.); Bouwhuis, M
(Bouwhuis, M.); Brack, J (Brack, J.); Brull, A (Bruell, A.); Brunn, I (Brunn, I.); Capitani, GP
(Capitani, G. P.); Chiang, HC (Chiang, H. C.); Ciullo, G (Ciullo, G.); Contalbrigo, M
(Contalbrigo, M.); Court, GR (Court, G. R.); Dalpiaz, PF (Dalpiaz, P. F.); De Leo, R (De Leo,
R.); De Nardo, L (De Nardo, L.); De Sanctis, E (De Sanctis, E.); Devitsin, E (Devitsin, E.); Di
Nezza, P (Di Nezza, P.); Duren, M (Dueren, M.); Ehrenfried, M (Ehrenfried, M.); ElalaouiMoulay, A (Elalaoui-Moulay, A.); Elbakian, G (Elbakian, G.); Ellinghaus, F (Ellinghaus, F.);
Elschenbroich, U (Elschenbroich, U.); Ely, J (Ely, J.); Fabbri, R (Fabbri, R.); Fantoni, A
(Fantoni, A.); Fechtchenko, A (Fechtchenko, A.); Felawka, L (Felawka, L.); Fox, B (Fox, B.);
Franz, J (Franz, J.); Frullani, S (Frullani, S.); Garber, Y (Gaerber, Y.); Gapienko, G (Gapienko,
G.); Gapienko, V (Gapienko, V.); Garibaldi, F (Garibaldi, F.); Garutti, E (Garutti, E.); Gaskell, D
(Gaskell, D.); Gavrilov, G (Gavrilov, G.); Gharibyan, V (Gharibyan, V.); Graw, G (Graw, G.);
Grebeniouk, O (Grebeniouk, O.); Greeniaus, LG (Greeniaus, L. G.); Haeberli, W (Haeberli, W.);
Hafidi, K (Hafidi, K.); Hartig, M (Hartig, M.); Hasch, D (Hasch, D.); Heesbeen, D (Heesbeen,
D.); Henoch, M (Henoch, M.); Hertenberger, R (Hertenberger, R.); Hesselink, WHA (Hesselink,
W. H. A.); Hillenbrand, A (Hillenbrand, A.); Holler, Y (Holler, Y.); Hommez, B (Hommez, B.);
Iarygin, G (Iarygin, G.); Izotov, A (Izotov, A.); Jackson, HE (Jackson, H. E.); Jgoun, A (Jgoun,
A.); Kaiser, R (Kaiser, R.); Kinney, E (Kinney, E.); Kisselev, A (Kisselev, A.); Konigsmann, K
(Koenigsmann, K.); Kolster, H (Kolster, H.); Kopytin, M (Kopytin, M.); Korotkov, V
(Korotkov, V.); Kozlov, V (Kozlov, V.); Krauss, B (Krauss, B.); Krivokhijine, VG
(Krivokhijine, V. G.); Lagamba, L (Lagamba, L.); Lapikas, L (Lapikas, L.); Laziev, A (Laziev,
A.); Lenisa, P (Lenisa, P.); Liebing, P (Liebing, P.); Lindemann, T (Lindemann, T.); Lipka, K
(Lipka, K.); Lorenzon, W (Lorenzon, W.); Makins, NCR (Makins, N. C. R.); Marukyan, H
(Marukyan, H.); Masoli, F (Masoli, F.); Menden, F (Menden, F.); Mexner, V (Mexner, V.);
Meyners, N (Meyners, N.); Mikloukho, O (Mikloukho, O.); Miller, CA (Miller, C. A.); Miyachi,
Y (Miyachi, Y.); Muccifora, V (Muccifora, V.); Nagaitsev, A (Nagaitsev, A.); Nappi, E (Nappi,
E.); Naryshkin, Y (Naryshkin, Y.); Nass, A (Nass, A.); Nowak, WD (Nowak, W. -D.);
Oganessyan, K (Oganessyan, K.); Ohsuga, H (Ohsuga, H.); Orlandi, G (Orlandi, G.); Potashov,
S (Potashov, S.); Potterveld, DH (Potterveld, D. H.); Raithel, M (Raithel, M.); Reggiani, D
(Reggiani, D.); Reimer, PE (Reimer, P. E.); Reischl, A (Reischl, A.); Reolon, AR (Reolon, A.
R.); Rith, K (Rith, K.); Rosner, G (Rosner, G.); Rostomyan, A (Rostomyan, A.); Ryckbosch, D
(Ryckbosch, D.); Sanjiev, I (Sanjiev, I.); Savin, I (Savin, I.); Scarlett, C (Scarlett, C.); Schafer, A
(Schaefer, A.); Schill, C (Schill, C.); Schnell, G (Schnell, G.); Schuler, KP (Schueler, K. P.);
Schwind, A (Schwind, A.); Seibert, J (Seibert, J.); Seitz, B (Seitz, B.); Shanidze, R (Shanidze,
R.); Shibata, TA (Shibata, T. -A.); Shutov, V (Shutov, V.); Simani, MC (Simani, M. C.); Sinram,
K (Sinram, K.); Stancari, M (Stancari, M.); Statera, M (Statera, M.); Steffens, E (Steffens, E.);
Steijger, JJM (Steijger, J. J. M.); Stewart, J (Stewart, J.); Stosslein, U (Stoesslein, U.); Tanaka, H
(Tanaka, H.); Taroian, S (Taroian, S.); Tchuiko, B (Tchuiko, B.); Terkulov, A (Terkulov, A.);
Tessarin, S (Tessarin, S.); Thomas, E (Thomas, E.); Tkabladze, A (Tkabladze, A.); Trzcinski, A
(Trzcinski, A.); Tytgat, M (Tytgat, M.); Urciuoli, GM (Urciuoli, G. M.); van der Nat, PB (van
der Nat, P. B.); van der Steenhoven, G (van der Steenhoven, G.); van de Vyver, R (van de
Vyver, R.); Veretennikov, D (Veretennikov, D.); Vetterli, MC (Vetterli, M. C.); Vikhrov, V
(Vikhrov, V.); Vincter, MG (Vincter, M. G.); Visser, J (Visser, J.); Vogt, M (Vogt, M.); Volmer,
J (Volmer, J.); Weiskopf, C (Weiskopf, C.); Wendland, J (Wendland, J.); Wilbert, J (Wilbert, J.);
Wise, T (Wise, T.); Yen, S (Yen, S.); Yoneyama, S (Yoneyama, S.); Zihlmann, B (Zihlmann,
B.); Zohrabian, H (Zohrabian, H.); Zupranski, P (Zupranski, P.)
Title: Transverse polarization of Lambda and (Lambda)over-bar hyperons in quasireal
photoproduction
Abstract: The HERMES experiment has measured the transverse polarization of Lambda and
(Lambda) over bar hyperons produced inclusively in quasireal photoproduction at a positron
beam energy of 27.6 GeV. The transverse polarization P-n(Lambda) of the Lambda hyperon is
found to be positive while the observed (Lambda) over bar polarization is compatible with zero.
The values averaged over the kinematic acceptance of HERMES are P-n(Lambda)=0.078 +/-
0.006(stat)+/- 0.012(syst) and P-n((Lambda) over bar)=-0.025 +/- 0.015(stat)+/- 0.018(syst) for
Lambda and (Lambda) over bar, respectively. The dependences of P-n(Lambda) and Pn((Lambda) over bar) on the fraction zeta of the beam's light-cone momentum carried by the
hyperon and on the hyperon's transverse momentum p(T) were investigated. The measured
Lambda polarization rises linearly with p(T) and exhibits a different behavior for low and high
values of zeta, which approximately correspond to the backward and forward regions in the
center-of-mass frame of the gamma*N reaction.
ISSN: 1550-7998
DOI: 10.1103/PhysRevD.76.092008
Record 199 of 499
Author(s): Ananikyan, LN (Ananikyan, L. N.)
Title: The hexagonal recursive approximation with multisite-interaction Ising model for the solid
and fluid He-3 system
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 21 (5): 755-772 FEB 20
2007
Abstract: Consider the Heisenberg model with two-, three-, four-, five-, and six-spin exchanges
interactions applied on a hexagon in strong magnetic field for He-3 system. The recursive lattice
is constructed by adding next shells (branches) of hexagons on vertexes of previous one. The
exact rational recursion relations for partition function are obtained on this recursive lattice with
Ising model approximation for multiple-spins interaction. This approach gives us an opportunity
to describe solid and fluid He-3 films absorbed on the surface of graphite which have a structure
of two-dimensional regular triangular lattices. Using dynamical system method of onedimensional rational mapping allows us to research the magnetic behavior of solid and fluid He3 films, depending on the values of the exchanging parameters and magnetic field. The
magnetization plateaus m = 0 and m/m(sat) = 2/3 are obtained in low temperatures and different
exchange parameters. The bifurcation points corresponding to the second order phase transition
are observed. There is one period doubling that occurs in anti-ferromagnetic case at low
temperatures. The existence of sublattices in the considered model allows us to get modulated
phases.
ISSN: 0217-9792
Record 200 of 499
Adams, M (Adams, M.); Akchurin, N (Akchurin, N.); Akgun, U (Akgun, U.); Anderson, EW
(Anderson, E. W.); Antchev, G (Antchev, G.); Arcidy, M (Arcidy, M.); Ayan, S (Ayan, S.);
Aydin, S (Aydin, S.); Baarmand, M (Baarmand, M.); Babich, K (Babich, K.); Baden, D (Baden,
D.); Bakirci, MN (Bakirci, M. N.); Banerjee, S (Banerjee, Sud.); Banerjee, S (Banerjee, Sun.);
Bard, R (Bard, R.); Barnes, V (Barnes, V.); Bawa, H (Bawa, H.); Baiatian, G (Baiatian, G.);
Bencze, G (Bencze, G.); Beri, S (Beri, S.); Bhatnagar, V (Bhatnagar, V.); Bodek, A (Bodek, A.);
Budd, H (Budd, H.); Burchesky, K (Burchesky, K.); Camporesi, T (Camporesi, T.); Cankocak, K
(Cankocak, K.); Carrell, K (Carrell, K.); Cerci, S (Cerci, S.); Chendvankar, S (Chendvankar, S.);
Chung, Y (Chung, Y.); Cremaldi, L (Cremaldi, L.); Cushman, P (Cushman, P.); Damgov, J
(Damgov, J.); de Barbaro, P (de Barbaro, P.); Deliomeroglu, M (Deliomeroglu, M.); Demianov,
A (Demianov, A.); de Visser, T (de Visser, T.); Dimitrov, L (Dimitrov, L.); Dindar, K (Dindar,
K.); Dugad, S (Dugad, S.); Dumanoglu, I (Dumanoglu, I.); Duru, F (Duru, F.); Elias, J (Elias, J.);
Elvira, D (Elvira, D.); Emeliantchik, I (Emeliantchik, I.); Eno, S (Eno, S.); Eskut, E (Eskut, E.);
Fenyvesi, A (Fenyvesi, A.); Fisher, W (Fisher, W.); Freeman, J (Freeman, J.); Gamsizkan, H
(Gamsizkan, H.); Gavrilov, V (Gavrilov, V.); Genchev, V (Genchev, V.); Gershtein, Y
(Gershtein, Y.); Golutvin, I (Golutvin, I.); Goncharov, P (Goncharov, P.); Grassi, T (Grassi, T.);
Green, D (Green, D.); Gribushin, A (Gribushin, A.); Grinev, B (Grinev, B.); Gulmez, E
(Guelmez, E.); Gumus, K (Guemues, K.); Haelen, T (Haelen, T.); Hagopian, S (Hagopian, S.);
Hagopian, V (Hagopian, V.); Hashemi, M (Hashemi, M.); Hauptman, J (Hauptman, J.); Hazen, E
(Hazen, E.); Heering, A (Heering, A.); Ilyina, N (Ilyina, N.); Isiksal, E (Isiksal, E.); Jarvis, C
(Jarvis, C.); Johnson, K (Johnson, K.); Kaftanov, V (Kaftanov, V.); Kalagin, V (Kalagin, V.);
Kalinin, A (Kalinin, A.); Karmgard, D (Karmgard, D.); Kalmani, S (Kalmani, S.); Katta, S
(Katta, S.); Kaur, M (Kaur, M.); Kaya, M (Kaya, M.); Kayis-Topaksu, A (Kayis-Topaksu, A.);
Kellogg, R (Kellogg, R.); Khmelnikov, A (Khmelnikov, A.); Kim, H (Kim, H.); Kisselevich, I
(Kisselevich, I.); Kodolova, O (Kodolova, O.); Kohli, J (Kohli, J.); Kolossov, V (Kolossov, V.);
Korablev, A (Korablev, A.); Korneev, Y (Korneev, Y.); Kosarev, I (Kosarev, I.); Koylu, S
(Koylu, S.); Kramer, L (Kramer, L.); Krinitsyn, A (Krinitsyn, A.); Krokhotin, A (Krokhotin, A.);
Kryshkin, V (Kryshkin, V.); Kuleshov, S (Kuleshov, S.); Kumar, A (Kumar, A.); Kunori, S
(Kunori, S.); Kurt, P (Kurt, P.); Kuzucu-Polatoz, A (Kuzucu-Polatoz, A.); Laasanen, A
(Laasanen, A.); Ladygin, V (Ladygin, V.); Laszlo, A (Laszlo, A.); Lawlor, C (Lawlor, C.);
Lazic, D (Lazic, D.); Levchuk, L (Levchuk, L.); Linn, S (Linn, S.); Litvintsev, D (Litvintsev,
D.); Litov, L (Litov, L.); Los, S (Los, S.); Lubinsky, V (Lubinsky, V.); Lukanin, V (Lukanin,
V.); Ma, Y (Ma, Y.); Machado, E (Machado, E.); Mans, J (Mans, J.); Markowitz, P (Markowitz,
P.); Massolov, V (Massolov, V.); Martinez, G (Martinez, G.); Mazumdar, K (Mazumdar, K.);
Merlo, JP (Merlo, J. P.); Mermerkaya, H (Mermerkaya, H.); Mescheryakov, G (Mescheryakov,
G.); Mestvirishvili, A (Mestvirishvili, A.); Miller, M (Miller, M.); Mohammadi-Najafabadi, M
(Mohammadi-Najafabadi, M.); Moissenz, P (Moissenz, P.); Mondal, N (Mondal, N.); Nagaraj, P
(Nagaraj, P.); Norbeck, E (Norbeck, E.); Olson, J (Olson, J.); Onel, Y (Onel, Y.); Onengut, G
(Onengut, G.); Ozdes-Koca, N (Ozdes-Koca, N.); Ozkan, C (Ozkan, C.); Ozkurt, H (Ozkurt, H.);
Ozkorucuklu, S (Ozkorucuklu, S.); Paktinat, S (Paktinat, S.); Pal, A (Pal, A.); Patil, M (Patil,
M.); Penzo, A (Penzo, A.); Petrushanko, S (Petrushanko, S.); Petrosyan, A (Petrosyan, A.);
Pikalov, V (Pikalov, V.); Piperov, S (Piperov, S.); Podrasky, V (Podrasky, V.); Pompos, A
(Pompos, A.); Posch, C (Posch, C.); Qiang, W (Qiang, W.); Reddy, L (Reddy, L.); Reidy, J
(Reidy, J.); Ruchti, R (Ruchti, R.); Rogalev, E (Rogalev, E.); Rohlf, J (Rohlf, J.); Ronzhin, A
(Ronzhin, A.); Ryazanov, A (Ryazanov, A.); Safronov, G (Safronov, G.); Sanders, DA (Sanders,
D. A.); Sanzeni, C (Sanzeni, C.); Sarycheva, L (Sarycheva, L.); Satyanarayana, B
(Satyanarayana, B.); Schmidt, I (Schmidt, I.); Sekmen, S (Sekmen, S.); Semenov, S (Semenov,
S.); Senchishin, V (Senchishin, V.); Sergeyev, S (Sergeyev, S.); Serin-Zeyrek, M (Serin-Zeyrek,
M.); Sever, R (Sever, R.); Singh, J (Singh, J.); Sirunyan, A (Sirunyan, A.); Skuja, A (Skuja, A.);
Sharma, S (Sharma, S.); Sherwood, B (Sherwood, B.); Shumeiko, N (Shumeiko, N.); Smirnov, V
(Smirnov, V.); Sogut, K (Sogut, K.); Sorokin, P (Sorokin, P.); Spezziga, M (Spezziga, M.);
Stefanovich, R (Stefanovich, R.); Stolin, V (Stolin, V.); Sulak, L (Sulak, L.); Suzuki, I (Suzuki,
I.); Talov, V (Talov, V.); Teplov, K (Teplov, K.); Thomas, R (Thomas, R.); Topakli, H (Topakli,
H.); Tully, C (Tully, C.); Turchanovich, L (Turchanovich, L.); Ulyanov, A (Ulyanov, A.);
Vankov, I (Vankov, I.); Vardanyan, I (Vardanyan, I.); Varela, F (Varela, F.); Vergili, M (Vergili,
M.); Verma, P (Verma, P.); Vesztergombi, G (Vesztergombi, G.); Vidal, R (Vidal, R.);
Vishnevskiy, A (Vishnevskiy, A.); Vlassov, E (Vlassov, E.); Vodopiyanov, I (Vodopiyanov, I.);
Volkov, A (Volkov, A.); Volodko, A (Volodko, A.); Wang, L (Wang, L.); Wetstein, M
(Wetstein, M.); Winn, D (Winn, D.); Wigmans, R (Wigmans, R.); Whitmore, J (Whitmore, J.);
Wu, SX (Wu, S. X.); Yazgan, E (Yazgan, E.); Yershov, A (Yershov, A.); Yetkin, T (Yetkin, T.);
Zalan, P (Zalan, P.); Zarubin, A (Zarubin, A.); Zeyrek, M (Zeyrek, M.)
Group Author(s): Collaboration, CH
Title: Design, performance, and calibration of CMS forward calorimeter wedges
Source: EUROPEAN PHYSICAL JOURNAL C, 53 (1): 139-166 JAN 2008
Abstract: We report on the test beam results and calibration methods using high energy
electrons, pions and muons with the CMS forward calorimeter (HF). The HF calorimeter covers
a large pseudorapidity region (3 <= vertical bar eta vertical bar <= 5), and is essential for a large
number of physics channels with missing transverse energy. It is also expected to play a
prominent role in the measurement of forward tagging jets in weak boson fusion channels in
Higgs production. The HF calorimeter is based on steel absorber with embedded fused-silicacore optical fibers where Cherenkov radiation forms the basis of signal generation. Thus, the
detector is essentially sensitive only to the electromagnetic shower core and is highly noncompensating (e/h approximate to 5). This feature is also manifest in narrow and relatively short
showers compared to similar calorimeters based on ionization. The choice of fused-silica optical
fibers as active material is dictated by its exceptional radiation hardness. The electromagnetic
energy resolution is dominated by photoelectron statistics and can be expressed in the customary
form as a/root E circle plus b. The stochastic term a is 198% and the constant term b is 9%. The
hadronic energy resolution is largely determined by the fluctuations in the neutral pion
production in showers, and when it is expressed as in the electromagnetic case, a = 280% and b =
11%.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0459-4
Record 201 of 499
Author(s): Ron, G (Ron, G.); Glister, J (Glister, J.); Lee, B (Lee, B.); Allada, K (Allada, K.);
Armstrong, W (Armstrong, W.); Arrington, J (Arrington, J.); Beck, A (Beck, A.); Benmokhtar, F
(Benmokhtar, F.); Berman, BL (Berman, B. L.); Boeglin, W (Boeglin, W.); Brash, E (Brash, E.);
Camsonne, A (Camsonne, A.); Calarco, J (Calarco, J.); Chen, JP (Chen, J. P.); Choi, S (Choi,
Seonho); Chudakov, E (Chudakov, E.); Coman, L (Coman, L.); Craver, B (Craver, B.); Cusanno,
F (Cusanno, F.); Dumas, J (Dumas, J.); Dutta, C (Dutta, C.); Feuerbach, R (Feuerbach, R.);
Freyberger, A (Freyberger, A.); Frullani, S (Frullani, S.); Garibaldi, F (Garibaldi, F.); Gilman, R
(Gilman, R.); Hansen, O (Hansen, O.); Higinbotham, DW (Higinbotham, D. W.); Holmstrom, T
(Holmstrom, T.); Hyde, CE (Hyde, C. E.); Ibrahim, H (Ibrahim, H.); Ilieva, Y (Ilieva, Y.); De
Jager, CW (de Jager, C. W.); Jiang, X (Jiang, X.); Jones, MK (Jones, M. K.); Kang, H (Kang,
H.); Kelleher, A (Kelleher, A.); Khrosinkova, E (Khrosinkova, E.); Kuchina, E (Kuchina, E.);
Kumbartzki, G (Kumbartzki, G.); LeRose, JJ (LeRose, J. J.); Lindgren, R (Lindgren, R.);
Markowitz, P (Markowitz, P.); Beck, SMT (Beck, S. May-Tal); McCullough, E (McCullough,
E.); Meekins, D (Meekins, D.); Meziane, M (Meziane, M.); Meziani, ZE (Meziani, Z. -E.);
Michaels, R (Michaels, R.); Moffit, B (Moffit, B.); Norum, BE (Norum, B. E.); Oh, Y (Oh, Y.);
Olson, M (Olson, M.); Paolone, M (Paolone, M.); Paschke, K (Paschke, K.); Perdrisat, CF
(Perdrisat, C. F.); Piasetzky, E (Piasetzky, E.); Potokar, M (Potokar, M.); Pomatsalyuk, R
(Pomatsalyuk, R.); Pomerantz, I (Pomerantz, I.); Puckett, A (Puckett, A.); Punjabi, V (Punjabi,
V.); Qian, X (Qian, X.); Qiang, Y (Qiang, Y.); Ransome, R (Ransome, R.); Reyhan, M (Reyhan,
M.); Roche, J (Roche, J.); Rousseau, Y (Rousseau, Y.); Saha, A (Saha, A.); Sarty, AJ (Sarty, A.
J.); Sawatzky, B (Sawatzky, B.); Schulte, E (Schulte, E.); Shabestari, M (Shabestari, M.);
Shahinyan, A (Shahinyan, A.); Shneor, R (Shneor, R.); Sirca, S (Sirca, S.); Slifer, K (Slifer, K.);
Solvignon, P (Solvignon, P.); Song, J (Song, J.); Sparks, R (Sparks, R.); Subedi, R (Subedi, R.);
Strauch, S (Strauch, S.); Urciuoli, GM (Urciuoli, G. M.); Wang, K (Wang, K.); Wojtsekhowski,
B (Wojtsekhowski, B.); Yan, X (Yan, X.); Yao, H (Yao, H.); Zhan, X (Zhan, X.); Zhu, X (Zhu,
X.)
Group Author(s): Jefferson Lab Hall Collaboration
Title: Measurements of the proton elastic-form-factor ratio mu(p)G(E)(p)/G(M)(p) at low
momentum transfer
Source: PHYSICAL REVIEW LETTERS, 99 (20): Art. No. 202002 NOV 16 2007
Abstract: High-precision measurements of the proton elastic form-factor ratio,
mu(p)G(E)(p)/G(M)(p), have been made at four-momentum transfer, Q(2), values between 0.2
and 0.5 GeV2. The new data, while consistent with previous results, clearly show a ratio less
than unity and significant differences from the central values of several recent phenomenological
fits. By combining the new form-factor ratio data with an existing cross-section measurement,
one finds that in this Q(2) range the deviation from unity is primarily due to G(E)(p) being
smaller than expected.
ISSN: 0031-9007
Record 202 of 499
Author(s): Elbakian, G (Elbakian, Garegin)
Title: Nuclear attenuation of hadrons at HERMES
Source: INTERNATIONAL JOURNAL OF MODERN PHYSICS A, 22 (2-3): 676-679 JAN 30
2007
Abstract: The influence of the nuclear environment on the hadronization of charged pions,
kaons and ( anti) protons in semi-inclusive deep inelastic scattering has been studied by the
HERMES experiment at DESY using a 27.5 GeV positron beam. Identified hadron multiplicities
have been measured for helium, neon and krypton relative to thate of deuterium as a function of
nu, z and p(T)(2). A large increase in the multiplicity ratios with p(T)(2) was observed,
clarifying the role of FSI in the nuclear transverse momentum broadening. In addition, doublehadron production in the nuclear medium was investigated. Nuclear effects on the double
hadron-production ratio provided an additional tool for studying modi. cations of hadronization
in nuclear matter.
ISSN: 0217-751X
Record 203 of 499
Gouzevitch, M (Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Gregori,
M (Gregori, M.); Grell, BR (Grell, B. R.); Grindhammer, G (Grindhammer, G.); Habib, S
(Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.); Heinzelmann, G (Heinzelmann,
G.); Helebrant, C (Helebrant, C.); Henderson, RCW (Henderson, R. C. W.); Henschel, H
K. H.); Hoffmann, D (Hoffmann, D.); Horisberger, R (Horisberger, R.); Hovhannisyan, A
E.); Janssen, X (Janssen, X.); Jemanov, V (Jemanov, V.); Jonsson, L (Jonsson, L.); Johnson, DP
Knutsson, A (Knutsson, A.); Korbel, V (Korbel, V.); Kostka, P (Kostka, P.); Kraemer, M
(Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar, J (Kretzschmar, J.); Kropivnitskaya, A
(Kropivnitskaya, A.); Kruger, K (Krueger, K.); Landon, MPJ (Landon, M. P. J.); Lange, W
(Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock, P.); Lebedev,
S (Levonian, S.); Li, G (Li, G.); Lindfeld, L (Lindfeld, L.); Lipka, K (Lipka, K.); Liptaj, A
(Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N (Loktionova, N.); LopezFernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (LucaciTimoce, A. -I.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski, E
(Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti, Ll.); Martisikova, M (Martisikova,
M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A (Mehta, A.); Meier,
K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, H (Meyer, H.); Meyer,
J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I
(Milcewicz-Mika, I.); Mohamed, A (Mohamed, A.); Moreau, F (Moreau, F.); Morozov, A
(Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Muller, K (Mueller, K.);
Oganezov, R (Oganezov, R.); Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.); Osman, S
(Osman, S.); Ozerov, D (Ozerov, D.); Palichik, V (Palichik, V.); Panagoulias, I (Panagoulias, I.);
Pandurovic, M (Pandurovic, M.); Papadopoulou, T (Papadopoulou, Th.); Pascaud, C (Pascaud,
C.); Patel, GD (Patel, G. D.); Peng, H (Peng, H.); Perez, E (Perez, E.); Perez-Astudillo, D
(Perez-Astudillo, D.); Perieanu, A (Perieanu, A.); Petrukhin, A (Petrukhin, A.); Picuric, I
(Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.); Polifka, R
(Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Prideaux, P (Prideaux, P.); Radescu, V
(Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Ravdandorj, T
(Ravdandorj, T.); Reimer, P (Reimer, P.); Risler, C (Risler, C.); Rizvi, E (Rizvi, E.); Robmann, P
A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salek, D (Salek, D.); Salvaire, F
(Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.);
Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L
(Schoeffel, L.); Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.);
Shtarkov, LN (Shtarkov, L. N.); Sloan, T (Sloan, T.); Smijanic, I (Smijanic, I.); Smirnov, P
(Smirnov, P.); Soloviev, Y (Soloviev, Y.); South, D (South, D.); Spaskov, V (Spaskov, V.);
B.); Stiewe, J (Stiewe, J.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T
D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I (Tsakov, I.);
Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis, G.); Tsurin, I (Tsurin, I.); Turnau, J
(Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Utkin, D (Utkin, D.);
Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen, P (Van Mechelen, P.);
Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.);
Volchinski, V (Volchinski, V.); Weber, G (Weber, G.); Weber, R (Weber, R.); Wegener, D
(Wegener, D.); Werner, C (Werner, C.); Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.);
Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S (Xella, S.); Yeganov, V (Yeganov, V.);
Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.); Zohrabyan,
H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Charged particle production in high Q(2) deep-inelastic scattering at HERA
Source: PHYSICS LETTERS B, 654 (5-6): 148-159 OCT 18 2007
Abstract: The average charged track multiplicity and the normalised distribution of the scaled
momentum, x(p), of charged final state hadrons are measured in deep-inelastic ep scattering at
high Q(2) in the Breit frame of reference. The analysis covers the range of photon virtuality 100
< Q(2) < 20000 GeV2. Compared with previous results presented by HERA experiments this
analysis has a significantly higher statistical precision and extends the phase space to higher Q(2)
and to the full range of x(p). The results are compared with e(+)e(-) annihilation data and with
various calculations based on perturbative QCD using different models of the hadronisation
process. (c) 2007 Published by Elsevier B.V.
ISSN: 0370-2693
DOI: 10.1016/j.physletb.2007.07.073
Record 204 of 499
Author(s): Aktas, A (Aktas, A.); Alexa, C (Alexa, C.); Andreev, V (Andreev, V.); Anthonis, T
(Anthonis, T.); Antunovic, B (Antunovic, B.); Aplin, S (Aplin, S.); Asmone, A (Asmone, A.);
FW (Busser, F. W.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G (Buschhorn, G.);
Bystritskaya, L (Bystritskaya, L.); Campbell, AJ (Campbell, A. J.); Cantunavila, KB
(Cantunavila, K. B.); Cassol-Brunner, F (Cassol-brunner, F.); Cerny, K (Cerny, K.); Cerny, V
Delcourt, B (Delcourt, B.); Deldegan, M (Deldegan, M.); Delvax, J (Delvax, J.); De Roeck, A
(De Roeck, A.); Dewolf, EA (Dewolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov,
(Elsen, E.); Essenov, S (Essenov, S.); Faulkiewicz, A (Faulkiewicz, A.); Faulkner, PJW
Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.); Finke, L (Finke, L.); Fleischer, M (Fleischer,
M.); Fomenko, A (Fomenko, A.); Franke, G (Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E
Hildebrandt, M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hormann, D (Hormann, D.);
(Jemanov, V.); Jonsson, L (Jonsson, L.); Johnson, DP (Joehnson, D. P.); Jung, AW (Jung, A.
Li.); Martisikova, M (Martisikova, M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield,
S. J.); Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H
(Meyer, H.); Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S
(Mikocki, S.); MIlcewicz-Mika, I (Milcewicz-mika, I.); Mohamed, A (Mohamed, A.); Moreau, F
(Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M.
(Naroska, B.); Naumann, T (Naumann, Th.); Newman, PR (Newman, P. R.); Niebuhr, C
(Papadopoulou, Th.); Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Peng, H (Peng, H.);
Salvaire, F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E
(Sauvan, E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.);
Schoerel, L (Schoerel, L.); Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon,
H. -C.); Sefkow, F (Sefkow, F.); Shaw-West, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov,
I.); Shtarkov, LN (Shtarkov, L. N.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P
B.); Stiewe, J (Stiewe, J.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T
D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truol, P.); Tsakov, I (Tsakov, I.);
Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis, G.); Tsurin, I (Tsurin, I.); Turnau, J
(Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Utkin, D (Utkin, D.);
Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Vanmechelen, P (Vanmechelen, P.);
Vargastrevino, A (Vargastrevino, A.); Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.);
Volchinski, V (Volchinski, V.); Weber, G (Weber, G.); Weber, R (Weber, R.); Wegener, D
(Wegener, D.); Werner, C (Werner, C.); Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.);
Wolf, R (Wolf, R.); Wunsch, E (Wunsch, E.); Xella, S (Xella, S.); Yeganov, V (Yeganov, V.);
Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.);
Zohrabyanand, H (Zohrabyanand, H.); Zomer, F (Zomer, F.)
Title: Dijet cross sections and parton densities in diffractive DIS at HERA
Source: JOURNAL OF HIGH ENERGY PHYSICS, (10): Art. No. 042 OCT 2007
Abstract: Differential dijet crosssections in dirractive deep-in elastic scattering are measured
with the H1 detector at HERA using an integrated luminosity of 51.5 pb(-1).The selected events
are of the type ep -> eXY, where the system X contains atleast two jets and is well separated in
rapidity from the low mass proton dissociation system Y.The dijet data are compared with QCD
predictions at next-to-leading order based on diffractive part on distribution unctions previously
extracted from measurement so inclusive dirractive deep-inelastic scattering.The prediction
describes the dijet data well at low and intermediate z(P)(the fraction of the momentum of the
dirractive exchange carried by the part on entering the hard interaction)where the gluon density
is well determinedfromtheinclusivedirractive data,supporting QCD factorisation. A new set of
dirractive part on distribution functions is obtained through a simultaneous fit to the dirractive
inclusive and dijet crosssections.This allows for a precise determination of both the dirractive
quark and gluon distributions in the range 0.05<z(P)<0.9.In particular,the precision on the gluon
density at high momentum fractions is improved compared to previous extractions.
ISSN: 1126-6708
Article Number: 042
Record 205 of 499
Astvatsatourov, A (Astvatsatourov, A.); Babaev, A (Babaev, A.); Backovic, S (Backovic, S.);
Baghdasaryan, A (Baghdasaryan, A.); Baranov, P (Baranov, P.); Barrelet, E (Barrelet, E.);
Bartel, W (Bartel, W.); Baudrand, S (Baudrand, S.); Beckingham, M (Beckingham, M.);
Begzsuren, K (Begzsuren, K.); Behnke, O (Behnke, O.); Behrendt, O (Behrendt, O.); Belousov,
A (Belousov, A.); Berger, N (Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO (Boenig, M. -O.);
(Bruncko, D.); Busser, FW (Buesser, F. W.); Bunyatyan, A (Bunyatyan, A.); Buschhorn, G
JB (Dainton, J. B.); Daum, K (Daum, K.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.);
Del Degan, M (Del Degan, M.); De Roeck, A (De Roeck, A.); De Wolf, EA (De Wolf, E. A.);
Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dubak, A (Dubak, A.); Eckerlin, G
(Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eichler, R (Eichler, R.); Eisele,
F (Eisele, F.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov, S.); Falkewicz,
A (Falkewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A
(Finke, L.); Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Franke, G (Franke, G.);
Frisson, T (Frisson, T.); Gabathuler, E (Gabathuler, E.); Garutti, E (Garutti, E.); Gayler, J
(Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Ginzburgskaya, S (Ginzburgskaya, S.); Glazov, A
(Glazov, A.); Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich, L.); Goettlich, M (Goettlich,
M.); Gogitidze, N (Gogitidze, N.); Gorbounov, S (Gorbounov, S.); Gouzevitch, M (Gouzevitch,
M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Gregori, M (Gregori, M.); Grell, BR
Hussain, S (Hussain, S.); Jacquet, M (Jacquet, M.); Janssen, ME (Janssen, M. E.); Janssen, X
(Janssen, X.); Jemanov, V (Jemanov, V.); Jonsson, L (Joensson, L.); Johnson, DP (Johnson, D.
P.); Jung, AW (Jung, A. W.); Jung, H (Jung, H.); Kapichine, M (Kapichine, M.); Katzy, J
(Katzy, J.); Kenyon, IR (Kenyon, I. R.); Kiesling, C (Kiesling, C.); Klein, M (Klein, M.);
Kleinwort, C (Kleinwort, C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knies, G
(Knies, G.); Knutsson, A (Knutsson, A.); Korbel, V (Korbel, V.); Kostka, P (Kostka, P.);
Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar, J (Kretzschmar, J.);
Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Landon, MPJ (Landon, M. P.
J.); Lange, W (Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock,
P.); Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann,
V.); Levonian, S (Levonian, S.); Lindfeld, L (Lindfeld, L.); Lipka, K (Lipka, K.); Liptaj, A
(Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N (Loktionova, N.); LopezFernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (LucaciTimoce, A. -I.); Lueders, H (Lueders, H.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine,
A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti, L.); Martisikova,
M (Martisikova, M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A
Milcewicz-Mika, I (Milcewicz-Mika, I.); Mladenov, D (Mladenov, D.); Mohamed, A
(Mohamed, A.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.);
Mozer, MU (Mozer, M. U.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov,
K.); Naroska, B (Naroska, B.); Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.);
(Nowak, K.); Nozicka, M (Nozicka, M.); Oganezov, R (Oganezov, R.); Olivier, B (Olivier, B.);
Placakyte, R (Placakyte, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Prideaux, P (Prideaux,
P.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Ravdandorj, T (Ravdandorj, T.);
Reimer, P (Reimer, P.); Rimmer, A (Rimmer, A.); Risler, C (Risler, C.); Rizvi, E (Rizvi, E.);
(Rostovtsev, A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salvaire, F (Salvaire,
F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S
(Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.);
Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F
(Shtarkov, L. N.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.);
Soloviev, Y (Soloviev, Y.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka,
A.); Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.); Straumann, U
(Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov, V.);
Thompson, G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F
(Tomasz, F.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov,
I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis, G.); Tsurin, I (Tsurin,
I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Usik, A
(Usik, A.); Utkin, D (Utkin, D.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van
Mechelen, P (Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.);
Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.); Wacker, K (Wacker, K.);
Weber, G (Weber, G.); Weber, R (Weber, R.); Wegener, D (Wegener, D.); Werner, C (Werner,
C.); Wessels, M (Wessels, M.); Wissing, C (Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E
(Wuensch, E.); Xella, S (Xella, S.); Yan, W (Yan, W.); Yeganov, V (Yeganov, V.); Zacek, J
(Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.); Zhokin,
A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, J (Zimmermann, J.); Zimmermann, T
Title: Search for lepton flavour violation in ep collisions at HERA
Source: EUROPEAN PHYSICAL JOURNAL C, 52 (4): 833-847 DEC 2007
Abstract: A search for the lepton flavour violating processes ep -> mu X and ep -> tau X is
performed with the H1 experiment at HERA. Final states with a muon or tau and a hadronic jet
are searched for in a data sample corresponding to an integrated luminosity of 66.5 pb(-1) for
e(+) p collisions and 13.7 pb(-1) for e(-)p collisions at acentre-of-mass energy of 319 GeV. No
evidence for lepton flavour violation is found. Limits are derived on the mass and the couplings
of leptoquarks inducing lepton flavour violation in an extension of the Buchmuller-Ruckl-Wyler
effective model. Leptoquarks produced in ep collisions with a coupling strength of lambda = 0.3
and decaying with the same coupling strength to a muon-quark pair or a tau-quark pair are
excluded at 95% confidence level up to masses of 459 GeV and 379 GeV, respectively.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0440-2
Record 206 of 499
Author(s): Akopov, N (Akopov, N.); Grigoryan, L (Grigoryan, L.); Akopov, Z (Akopov, Z.)
Title: Possible influence of the two string events on the hadron formation in a nuclear
environment
Source: EUROPEAN PHYSICAL JOURNAL C, 52 (4): 893-898 DEC 2007
Abstract: One of the basic assumptions of the string model is that as a result of a DIS in nucleus
a single string arises, which then breaks into hadrons. However the pomeron exchange
considered in this work, leads to the production of two strings in the one event. The hadrons
produced in these events have smaller formation lengths, than those with the same energy
produced in the single string events. As a consequence, they undergo more substantial absorption
in the nuclear matter.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0417-1
Record 207 of 499
Angelis, A.); Delgado, C (Delgado, C.); Reyes, RDL (de los Reyes, R.); De Lotto, B (De Lotto,
B.); Domingo-Santamaria, E (Domingo-Santamaria, E.); Dorner, D (Dorner, D.); Doro, M
V.); Font, L (Font, L.); Fuchs, M (Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ
(Garcia-Lopez, R. J.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Giller, M
(Giller, M.); Goebel, F (Goebel, F.); Hakobyan, D (Hakobyan, D.); Hayashida, M (Hayashida,
M.); Hengstebeck, T (Hengstebeck, T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose,
J (Hose, J.); Hrupec, D (Hrupec, D.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T
(Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A
Lopez, J (Lopez, J.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar,
P.); Maneva, G (Maneva, G.); Mannheim, K (Mannheim, K.); Mansutti, O (Mansutti, O.);
Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C
D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E (OnaWilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Paneque, D (Paneque, D.); Panniello, M
(Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. M.); Pasanen, M (Pasanen,
M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M (Persic, M.);
Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prandini, E (Prandini, E.); Puchades, N
(Puchades, N.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J
(Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A
(Saggion, A.); Saito, T (Saito, T.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V
(Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer, T.);
Shayduk, M (Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore, SN (Shore, S. N.); Sidro, N
(Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Stamerra, A
Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Torres, DF
(Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Vitale, V (Vitale, V.); Wagner,
RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.);
Title: Variable very high energy gamma-ray emission from Markarian 501
Source: ASTROPHYSICAL JOURNAL, 669 (2): 862-883 Part 1 NOV 10 2007
Abstract: The blazar Mrk 501 was observed at energies above 0.10 TeV with the MAGIC
Telescope from 2005 May through July. The high sensitivity of the instrument enabled the
determination of the flux and spectrum of the source on a night-by-night basis. Throughout our
observational campaign, the flux from Mrk 501 was found to vary by an order of magnitude.
Intranight flux variability with flux-doubling times down to 2 minutes was observed during the
two most active nights, namely, June 30 and July 9. These are the fastest flux variations ever
observed in Mrk 501. The similar to 20 minute long flare of July 9 showed an indication of a 4
+/- 1 minute time delay between the peaks of F(< 0.25 TeV) and F(> 1.2 TeV), which may
indicate a progressive acceleration of electrons in the emitting plasma blob. The flux variability
was quantified for several energy ranges and found to increase with the energy of the gamma-ray
photons. The spectra hardened significantly with increasing flux, and during the two most active
nights, a spectral peak was clearly detected at 0.43 +/- 0.06 and 0.25 +/- 0.07 TeV, respectively,
for June 30 and July 9. There is no evidence of such a spectral feature for the other nights at
energies down to 0.10 TeV, thus suggesting that the spectral peak is correlated with the source
luminosity. These observed characteristics could be accommodated in a synchrotron selfCompton framework in which the increase in gamma-ray flux is produced by a freshly injected (
high energy) electron population.
ISSN: 0004-637X
Record 208 of 499
Angelis, A.); Delgado, C (Delgado, C.); Reyes, RDL (Reyes, R. De Los); De Lotto, B (De Lotto,
Hengstebeck, T (Hengstebeck, T.); Herrero, A (Herrero, A.); Hirotani, K (Hirotani, K.); Hne,
DHR (Hne, D. Ho R.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. -C.); Jacon, P (Jacon, P.); Jogler, T
(Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A
Lopez, J (Lopez, J.); Lopez, M (Lopez, M.); Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar,
P.); Maneva, G (Maneva, G.); Mannheim, K (Mannheim, K.); Mansutti, O (Mansutti, O.);
Mariotti, M (Mariotti, M.); Martinez, M (Martinez, M.); Mazin, D (Mazin, D.); Merck, C
D (Nieto, D.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic, J.); Ona-Wilhelmi, E (OnaWilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Paneque, D (Paneque, D.); Panniello, M
(Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J. Ma.); Pasanen, M (Pasanen,
M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R (Pegna, R.); Persic, M (Persic, M.);
Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Poller, M (Poller, M.); Prandini, E (Prandini,
E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M
(Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert, A.); Gamer, SRR (Gamer,
S. Ru R.); Saggion, A (Saggion, A.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto,
V (Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.); Schweizer, T (Schweizer,
N (Sidro, N.); Sillanpaa, A (Sillanpaeae, A.); Sobczynska, D (Sobczynska, D.); Stamerra, A
(Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Temnikov, P (Temnikov, P.);
Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Tonello, N (Tonello, N.); Torres, DF
(Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Vitale, V (Vitale, V.); Wagner,
RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.); Zandanel, F (Zandanel, F.);
Title: Constraints on the steady and pulsed very high energy gamma-ray emission from
observations of PSR B1951+32/CTB 80 with the magic telescope
Source: ASTROPHYSICAL JOURNAL, 669 (2): 1143-1149 Part 1 NOV 10 2007
Abstract: We report on very high energy gamma-ray observations with the MAGIC Telescope
of the pulsar PSR B1951+32 and its associated nebula, CTB 80. Our data constrain the cutoff
energy of the pulsar to be less than 32 GeV, assuming the pulsed gamma-ray emission to be
exponentially cut off. In the case that the cutoff follows a superexponential behavior, the cutoff
energy can be as high as similar to 60 GeV. The upper limit on the flux of pulsed gamma-ray
emission above 75 GeV is 4.3; 10(-11) photons cm(-2) s(-1), and the upper limit on the flux of
steady emission above 140 GeV is 1.5; 10(-11) photons cm(-2) s(-1). We discuss our results in
the framework of recent model predictions and other studies.
ISSN: 0004-637X
Record 209 of 499
Author(s): Ter-Antonyan, SV (Ter-Antonyan, S. V.)
Title: Mutually compensative pseudo solutions of primary energy spectra in the knee region
Source: ASTROPARTICLE PHYSICS, 28 (3): 321-326 NOV 2007
Abstract: The problem of the uniqueness of solutions during the evaluation of primary energy
spectra in the knee region using all extensive air shower (EAS) data set and the EAS inverse
approach is investigated. It is shown that the unfolding of primary energy spectra in the knee
region leads to mutually compensative pseudo solutions. These solutions may be the reason for
the observed disagreements in the elementary energy spectra of cosmic rays in the 1-100 PeV
energy range obtained from different experiments. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0927-6505
Record 210 of 499
Author(s): Arnaldi, R (Arnaldi, R.); Banicz, K (Banicz, K.); Castor, J (Castor, J.); Chaurand, B
(Chaurand, B.); Cicalo, C (Cicalo, C.); Colla, A (Colla, A.); Cortese, P (Cortese, P.);
Damjanovic, S (Damjanovic, S.); David, A (David, A.); de Falco, A (de Falco, A.); Devaux, A
(Devaux, A.); Ducroux, L (Ducroux, L.); En'yo, H (En'yo, H.); Fargeix, J (Fargeix, J.); Ferretti,
A (Ferretti, A.); Floris, M (Floris, M.); Forster, A (Forster, A.); Force, P (Force, P.); Guettet, N
(Guettet, N.); Guichard, A (Guichard, A.); Gulkanian, H (Gulkanian, H.); Heuser, JM (Heuser, J.
M.); Keil, M (Keil, M.); Kluberg, L (Kluberg, L.); Lourenco, C (Lourenco, C.); Lozano, J
(Lozano, J.); Manso, F (Manso, F.); Martins, P (Martins, P.); Masoni, A (Masoni, A.); Neves, A
(Neves, A.); Ohnishi, H (Ohnishi, H.); Oppedisano, C (Oppedisano, C.); Parracho, P (Parracho,
P.); Pillot, P (Pillot, P.); Poghosyan, T (Poghosyan, T.); Puddu, G (Puddu, G.); Radermacher, E
(Radermacher, E.); Ramalhete, P (Ramalhete, P.); Rosinsky, P (Rosinsky, P.); Scomparin, E
(Scomparin, E.); Seixas, J (Seixas, J.); Serci, S (Serci, S.); Shahoyan, R (Shahoyan, R.);
Sonderegger, P (Sonderegger, P.); Specht, HJ (Specht, H. J.); Tieulent, R (Tieulent, R.); Usai, G
(Usai, G.); Veenhof, R (Veenhof, R.); Wohri, HK (Wohri, H. K.)
Group Author(s): NA06 Collaboration
Title: J/psi production in indium-indium collisions at 158 GeV/Nucleon
Source: PHYSICAL REVIEW LETTERS, 99 (13): Art. No. 132302 SEP 28 2007
Abstract: The NA60 experiment studies muon pair production at the CERN Super Proton
Synchrotron. In this Letter we report on a precision measurement of J/psi in In-In collisions. We
have studied the J/psi centrality distribution, and we have compared it with the one expected if
absorption in cold nuclear matter were the only active suppression mechanism. For collisions
involving more than similar to 80 participant nucleons, we find that an extra suppression is
present. This result is in qualitative agreement with previous Pb-Pb measurements by the NA50
experiment, but no theoretical explanation is presently able to coherently describe both results.
ISSN: 0031-9007
Record 211 of 499
B (Delcourt, B.); Del Degan, M (Del Degan, M.); De Roeck, A (De Roeck, A.); De Wolf, EA
(De Wolf, E. A.); Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dubak, A (Dubak, A.);
Eckerlin, G (Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eichler, R (Eichler,
R.); Eisele, F (Eisele, F.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov,
S.); Falkewicz, A (Falkewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.);
Fedotov, A (Fedotov, A.); Felst, R (Felst, R.); Feltesse, J (Feltesse, J.); Ferencei, J (Ferencei, J.);
Finke, L (Finke, L.); Fleischer, M (Fleischer, M.); Fomenko, A (Fomenko, A.); Franke, G
(Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E (Gabathuler, E.); Garutti, E (Garutti, E.);
Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Ginzburgskaya, S (Ginzburgskaya, S.);
Glazov, A (Glazov, A.); Glushkov, I (Glushkov, I.); Goerlich, L (Goerlich, L.); Goettlich, M
(Goettlich, M.); Gogitidze, N (Gogitidze, N.); Gorbounov, S (Gorbounov, S.); Gouzevitch, M
(Gouzevitch, M.); Grab, C (Grab, C.); Greenshaw, T (Greenshaw, T.); Grell, BR (Grell, B. R.);
Grindhammer, G (Grindhammer, G.); Habib, S (Habib, S.); Haidt, D (Haidt, D.); Hansson, M
(Hansson, M.); Heinzelmann, G (Heinzelmann, G.); Helebrant, C (Helebrant, C.); Henderson,
RCW (Henderson, R. C. W.); Henschel, H (Henschel, H.); Herrera, G (Herrera, G.); Hildebrandt,
M (Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D (Hoffmann, D.); Horisberger, R
(Horisberger, R.); Hovhannisyan, A (Hovhannisyan, A.); Hreus, T (Hreus, T.); Jacquet, M
(Jacquet, M.); Janssen, ME (Janssen, M. E.); Janssen, X (Janssen, X.); Jemanov, V (Jemanov,
V.); Jonsson, L (Joensson, L.); Johnson, DP (Johnson, D. P.); Jung, AW (Jung, A. W.); Jung, H
(Jung, H.); Kapichine, M (Kapichine, M.); Katzy, J (Katzy, J.); Kenyon, IR (Kenyon, I. R.);
Kiesling, C (Kiesling, C.); Klein, M (Klein, M.); Kleinwort, C (Kleinwort, C.); Klimkovich, T
(Klimkovich, T.); Kluge, T (Kluge, T.); Knutsson, A (Knutsson, A.); Korbel, V (Korbel, V.);
Kostka, P (Kostka, P.); Kraemer, M (Kraemer, M.); Krastev, K (Krastev, K.); Kretzschmar, J
(Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Landon,
MPJ (Landon, M. P. J.); Lange, W (Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.);
Laycock, P (Laycock, P.); Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth, G.);
Lendermann, V (Lendermann, V.); Levonian, S (Levonian, S.); Lindfeld, L (Lindfeld, L.);
Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N
(Loktionova, N.); Lopez-Fernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.);
Lucaci-Timoce, AI (Lucaci-Timoce, A. -I.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine,
M (Martisikova, M.); Martyn, HU (Martyn, H. -U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A
Milcewicz-Mika, I (Milcewicz-Mika, I.); Mladenov, D (Mladenov, D.); Mohamed, A
(Mohamed, A.); Moreau, F (Moreau, F.); Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.);
Mozer, MU (Mozer, M. U.); Muller, K (Mueller, K.); Murin, P (Murin, P.); Nankov, K (Nankov,
K.); Naroska, B (Naroska, B.); Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.);
(Nowak, K.); Nozicka, M (Nozicka, M.); Oganezov, R (Oganezov, R.); Olivier, B (Olivier, B.);
Placakyte, R (Placakyte, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Prideaux, P (Prideaux,
P.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Ravdandorj, T (Ravdandorj, T.);
Reimer, P (Reimer, P.); Rimmer, A (Rimmer, A.); Risler, C (Risler, C.); Rizvi, E (Rizvi, E.);
(Rostovtsev, A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salvaire, F (Salvaire,
F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S
(Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.);
Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H. -C.); Sefkow, F
(Shtarkov, L. N.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.);
Soloviev, Y (Soloviev, Y.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka,
A.); Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe,
J.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V
(Tchoulakov, V.); Thompson, G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T
(Toll, T.); Tomasz, F (Tomasz, F.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P
(Trueol, P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.); Tsipolitis, G (Tsipolitis,
G.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K
(Urban, K.); Utkin, D (Utkin, D.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van
Mechelen, P (Van Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.);
Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.); Weber, G (Weber, G.); Weber,
R (Weber, R.); Wegener, D (Wegener, D.); Werner, C (Werner, C.); Wessels, M (Wessels, M.);
Wissing, C (Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S (Xella, S.);
Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.);
Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T
Title: Search for baryonic resonances decaying to Xi pi in deep-inelastic scattering at HERA
Source: EUROPEAN PHYSICAL JOURNAL C, 52 (3): 507-514 NOV 2007
Abstract: A search for narrow baryonic resonances decaying into Xi(-)pi(-) or Xi(-)pi(+) and
their antiparticles is carried out with the H1 detector using deep inelastic scattering events at
HERA in the range of negative photon four-momentum transfer squared 2<Q(2)< 100 GeV2. No
signal is observed for a new baryonic state in the mass range 1600-2300 MeV in either the
doubly charged or the neutral decay channels. The known.( 1530) 0 is observed through its decay
mode into Xi(-)pi(+). Upper limits are given on the ratio of the production rates of new baryonic
states, such as the hypothetical pentaquark states Xi(--)(5q) or Xi(0)(5q), relative to the
Xi(1530)(0) baryon state.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0407-3
Record 212 of 499
(Ivanilov, A. A.); Karamyan, Z (Karamyan, Zh.); Korotkov, BA (Korotkov, B. A.)
Title: Investigation of quasielastic muon-neutrino scattering on nuclei at E-v < 1 GeV
Source: PHYSICS OF ATOMIC NUCLEI, 70 (10): 1725-1730 OCT 2007
Abstract: Quasielastic muon-neutrino scattering on nuclei of propane-Freon mixture at energies
in the range E (v) < 1 GeV is studied. The multiplicity, momentum, and emission-angle
distributions of final protons are measured along with the dependence of the mean values for
these distributions on the neutrino energy in the range 0.2 < E (v) < 1 GeV.
ISSN: 1063-7788
DOI: 10.1134/S1063778807100079
Record 213 of 499
Title: The A dependence of K-0 and Lambda neutrinoproduction on nuclei
Abstract: The A dependence of the production of K-0 and. is investigated for the first time in
neutrino nuclear reactions using the data obtained with the SKAT bubble chamber. An
exponential parametrization (similar to A(beta)) of the particle yields results in beta(0)(V)=0.20
+/- 0.05 for V-0 particles ( K0 and.), while for pi(-) mesons the A dependence is much weaker
(beta(pi)- =0.068 +/- 0.007). A nuclear enhancement of the ratio K-0/pi(-) pis found; this ratio
increases from 0.055 +/- 0.013 for nu N interactions up to 0.070 +/- 0.011 at A approximate to
21 and 0.099 +/- 0.011 at A approximate to 45. It is observed that the multiplicity rise of V 0
occurs predominantly in the backward hemisphere of the hadronic system. It is shown that the A
dependence of the Lambda(0) and pi(-) yields can be reproduced in the framework of a model
incorporating the secondary intranuclear interactions of pions originating from the primary nu N
interactions.
ISSN: 1063-7788
DOI: 10.1134/S1063778807100080
Record 214 of 499
Title: The total yields of K*(892)(+), Sigma(+)(1385), and Sigma(0) in neutrino-induced
reactions at < E-nu > approximate to 10 GeV
Abstract: Using the data obtained with the SKAT bubble chamber, the total yields of K*( 892)+,
Sigma(+)( 1385), and Sigma(0) are estimated for the first time in neutrino- induced reactions at
moderate energy < E-nu > = 10.4 GeV. It is shown that the recently observed enhancement of
the K-0 and Lambda yields in nu A interactions as compared to nu N interactions is contributed
only slightly by the K*( 892)+ and S+( 1385) production. The contribution of resonances to the
K0 and. yields is found to be in qualitative agreement with higher energy (< E-nu > greater than
or similar to 40 GeV) data. It is shown that the energy dependence of the K*( 892)+ mean
multiplicity in nu N interactions is approximately linear in the range of < E-nu >approximate to
10-60 GeV, while that for Sigma(0) in nu A interactions ( A = 20- 21) is approximately
logarithmic in the range of GeV.
ISSN: 1063-7788
DOI: 10.1134/S1063778807100092
Record 215 of 499
(Chadwick, P. M.); Chounet, LM (Chounet, L.-M.); Clapson, AC (Clapson, A. C.); Coignet, G
Degrange, B (Degrange, B.); Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Ataie,
Funk, S (Funk, Seb.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B
(Lemoine-Goumard, M.); Lenain, JP (Lenain, J.-P.); Lohse, T (Lohse, T.); Martin, JM (Martin, J.
M.); Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Masterson, C
(Masterson, C.); Maurin, D (Maurin, D.); Maurin, G (Maurin, G.); McComb, TJL (McComb, T.
J. L.); Moderski, R (Moderski, R.); Moulin, E (Moulin, E.); de Naurois, M (de Naurois, M.);
Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.); Ohm, S (Ohm, S.); Olive, JP (Olive, J.-P.);
(Pelletier, G.); Petrucci, PO (Petrucci, P.-O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.);
(Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J.P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Title: Discovery of VHE gamma-rays from the distant BL Lacertae 1ES0347-121
Source: ASTRONOMY & ASTROPHYSICS, 473 (3): L25-+ OCT 2007
Abstract: Aims. Our aim is to study the production mechanism for very-high-energy (VHE; >
100 GeV) gamma-rays in distant active galactic nuclei (AGN) and use the observed VHE
spectrum to derive limits on the Extragalactic Background Light (EBL). We also want to
determine physical quantities through the modeling of the object's broad-band spectral energy
distribution (SED).
Methods. VHE observations (similar to 25 h live time) of the BL Lac 1ES 0347-121 (redshift z =
0.188) were conducted with the High Energy Stereoscopic System (HESS) between August and
December 2006. Contemporaneous X-ray and UV/optical observations from the SWIFT satellite
are used to interpret the SED of the source in terms of a synchrotron self Compton (SSC) model.
Results. An excess of 327 events, corresponding to a statistical significance of 10.1 standard
deviations, is detected from 1ES 0347-121. Its photon spectrum, ranging from similar to 250
GeV to similar to 3 TeV, is well described by a power law with a photon index of Gamma = 3.10
+/- 0.23(stat) +/- 0.10(sys). The integral flux above 250GeV corresponds to similar to 2% of the
flux of the Crab Nebula above the same threshold. No VHE flux variability is detected within the
data set.
Conclusions. Constraints on the EBL density at optical to near-infrared wavelengths derived
from the photon spectrum of 1ES 0347121 are close to the strongest limits derived previously.
The strong EBL limits confirm earlier findings, that the EBL density in the near-infrared is close
to the lower limits from source counts. This implies that the universe is more transparent to VHE
gamma-rays than previously believed. An SSC model provides a reasonable description of the
contemporaneous SED.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078412
Record 216 of 499
S (Mizobuchi, S.); Moralejo, A (Moralejo, A.); Nilsson, K (Nilsson, K.); Ninkovic, J (Ninkovic,
J.); Ona-Wilhelmi, E (Ona-Wilhelmi, E.); Otte, N (Otte, N.); Oya, I (Oya, I.); Paneque, D
(Paneque, D.); Panniello, M (Panniello, M.); Paoletti, R (Paoletti, R.); Paredes, JM (Paredes, J.
M.); Pasanen, M (Pasanen, M.); Pascoli, D (Pascoli, D.); Pauss, F (Pauss, F.); Pegna, R (Pegna,
R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Poller, M (Poller,
M.); Puchades, N (Puchades, N.); Prandini, E (Prandini, E.); Raymers, A (Raymers, A.); Rhode,
W (Rhode, W.); Ribo, M (Ribo, M.); Rico, J (Rico, J.); Rissi, M (Rissi, M.); Robert, A (Robert,
A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Sanchez, A (Sanchez, A.); Sartori, P
(Sartori, P.); Scalzotto, V (Scalzotto, V.); Scapin, V (Scapin, V.); Schmitt, R (Schmitt, R.);
Schweizer, T (Schweizer, T.); Shayduk, M (Shayduk, M.); Shinozaki, K (Shinozaki, K.); Shore,
SN (Shore, S. N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D
(Sobczynska, D.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.);
Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.); Tonello, N
(Tonello, N.); Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.);
Vitale, V (Vitale, V.); Wagner, RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek,
W.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: Observation of VHE gamma-rays from Cassiopeia A with the MAGIC telescope
Abstract: Aims. We searched for very high energy (VHE)gamma-ray emission from the
supernova remnant Cassiopeia A
Methods. The shell-type supernova remnant Cassiopeia A was observed with the 17 m MAGIC
telescope between July 2006 and January 2007 for a total time of 47 h.
Results. The source was detected above an energy of 250 GeV with a significance of 5.2s and a
photon flux above 1 TeV of (7.3 +/- 0.7(stat) +/- 2.2(sys)) x 10(-13) cm(-2)s(-1). The photon
spectrum is compatible with a power law dN/dE proportional to E-r with a photon index Gamma
= 2.3 +/- 0.2(stat) +/- 0.2(sys). The source is pointlike within the angular resolution of the
telescope.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20078168
Record 217 of 499
Author(s): Artem'ev, AI (Artem'ev, A. I.); Klochkov, DN (Klochkov, D. N.); Oganesyan, K
(Oganesyan, K.); Rostovtsev, YV (Rostovtsev, Yu. V.); Fedorov, MV (Fedorov, M. V.)
Title: Spatial amplification of a laser wave and the transverse spread of electrons in an undulator
with a noncollinear configuration
Source: LASER PHYSICS, 17 (10): 1213-1216 SEP 2007
Abstract: The spatial amplification of a wave in a magnetostatic undulator with noncollinear
electron and laser beams is studied in the framework of the dispersion relation for singlefrequency and collective regimes. The dependence of the gain on the electron beam width is
estimated with regard to the spatial boundedness of the beams. The laser power threshold at
which the selection with respect to the transverse velocity is possible is obtained for a freeelectron laser without inversion.
ISSN: 1054-660X
DOI: 10.1134/S1054660X07100040
Record 218 of 499
(Berger, N.); Bizot, JC (Bizot, J. C.); Boenig, MO (Boenig, M.-O.); Boudry, V (Boudry, V.);
Kretzschmar, J (Kretzschmar, J.); Kropivnitskaya, A (Kropivnitskaya, A.); Krueger, K (Krueger,
(Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A.-I.); Lytkin, L (Lytkin, L.); Makankine, A
(Makankine, A.); Malinovski, E (Malinovski, E.); Marage, P (Marage, P.); Marti, L (Marti, Ll.);
Martisikova, M (Martisikova, M.); Martyn, HU (Martyn, H.-U.); Maxfield, SJ (Maxfield, S. J.);
Mehta, A (Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.);
Meyer, H (Meyer, H.); Meyer, J (Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.);
Milcewicz-Mika, I (Milcewicz-Mika, I.); Mohamed, A (Mohamed, A.); Moreau, F (Moreau, F.);
Morozov, A (Morozov, A.); Morris, JV (Morris, J. V.); Mozer, MU (Mozer, M. U.); Muller, K
Naumann, T (Naumann, Th.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.);
(Nozicka, M.); Oganezov, R (Oganezov, R.); Olivier, B (Olivier, B.); Olsson, JE (Olsson, J. E.);
Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Peng, H (Peng, H.); Perez, E (Perez, E.);
Perez-Astudillo, D (Perez-Astudillo, D.); Perieanu, A (Perieanu, A.); Petrukhin, A (Petrukhin,
A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.);
Polifka, R (Polifka, R.); Povh, B (Povh, B.); Preda, T (Preda, T.); Prideaux, P (Prideaux, P.);
Radescu, V (Radescu, V.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Ravdandorj,
T (Ravdandorj, T.); Reimer, P (Reimer, P.); Risler, C (Risler, C.); Rizvi, E (Rizvi, E.); Robmann,
P (Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen, R.); Rostovtsev, A (Rostovtsev,
A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salvaire, F (Salvaire, F.); Sankey,
DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt,
S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L (Schoeffel, L.); Schoning, A
(Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H.-C.); Sefkow, F (Sefkow, F.); ShawWest, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.);
Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.); Soloviev, Y
(Soloviev, Y.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka, A.);
Staykova, Z (Staykova, Z.); Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.);
Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V
(Tchoulakov, V.); Thompson, G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T
(Toll, T.); Tomasz, F (Tomasz, F.); Tran, TH (Tran, T. H.); Traynor, D (Traynor, D.); Trinh, TN
(Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I (Tsakov, I.); Tseepeldorj, B (Tseepeldorj, B.);
Tsipolitis, G (Tsipolitis, G.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E
(Tzamariudaki, E.); Urban, K (Urban, K.); Utkin, D (Utkin, D.); Valkarova, A (Valkarova, A.);
Vazdik, Y (Vazdik, Y.); Vinokurova, S (Vinokurova, S.); Volchinski, V (Volchinski, V.);
Weber, G (Weber, G.); Weber, R (Weber, R.); Wegener, D (Wegener, D.); Werner, C (Werner,
C.); Wessels, M (Wessels, M.); Wissing, C (Wissing, Ch.); Wolf, R (Wolf, R.); Wunsch, E
(Wuensch, E.); Xella, S (Xella, S.); Yan, W (Yan, W.); Yeganov, V (Yeganov, V.); Zacek, J
(Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.); Zhokin,
A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, T (Zimmermann, T.); Zohrabyan, H
(Zohrabyan, H.); Zomer, F (Zomer, F.)
Group Author(s): H1Collaboration
Title: Measurement of inclusive jet production in deep-inelastic scattering at high Q(2) and
determination of the strong coupling
Source: PHYSICS LETTERS B, 653 (2-4): 134-144 SEP 30 2007
Abstract: Inclusive jet production is studied in neutral current deep-inelastic positron-proton
scattering at large four momentum transfer squared Q(2) > 150 GeV2 with the H1 detector at
HERA. Single and double differential inclusive jet cross sections are measured as a function of
Q(2) and of the transverse energy E-T of the jets in the Breit frame. The measurements are found
to be well described by calculations at next-to-leading order in perturbative QCD. The running of
the strong coupling is demonstrated and the value of alpha(s)(M-Z) is determined. The ratio of
the inclusive jet cross section to the inclusive neutral current cross section is also measured and
used to extract a precise value for ces (M-Z) = 0.1193 +/- 0.0014(exp.)(-0.0030)(+0.0047) (th.)
+/- 0.0016(pdf). (c) 2007 Elsevier BX All rights reserved.
ISSN: 0370-2693
Record 219 of 499
Author(s): Garyaka, AP (Garyaka, A. P.); Martirosov, RM (Martirosov, R. M.); Ter-Antonyan,
SV (Ter-Antonyan, S. V.); Nikolskaya, N (Nikolskaya, N.); Gallant, YA (Gallant, Y. A.); Jones,
L (Jones, L.); Procureur, J (Procureur, J.)
Title: Rigidity-dependent cosmic ray energy spectra in the knee region obtained with the
GAMMA experiment
Source: ASTROPARTICLE PHYSICS, 28 (2): 169-181 OCT 2007
Abstract: On the basis of the extensive air shower (EAS) data obtained by the GAMMA
experiment, the energy spectra and elemental composition of the primary cosmic rays are
derived in the 10(3)-10(5) TeV energy range. The reconstruction of the primary energy spectra is
carried out using an EAS inverse approach in the framework of the SIBYLL2.1 and QGSJET01
interaction models and the hypothesis of power-law primary energy spectra with rigiditydependent knees. The energy spectra of primary H, He, O-like and Fe-like nuclei obtained with
the SIBYLL interaction model agree with corresponding extrapolations of the balloon and
satellite data to similar to 10(3) TeV energies. The energy spectra obtained from the QGSJET
model show a predominantly proton composition in the knee region. The rigidity-dependent knee
feature of the primary energy spectra for each interaction model is displayed at the following
rigidities: E-R similar or equal to 2500 +/- 200 TV (SIBYLL) and E-R similar or equal to 31004200 TV (QGSJET).
All the results presented are derived taking into account the detector response, the reconstruction
uncertainties of the EAS parameters, and fluctuations in the EAS development. (C) 2007
ISSN: 0927-6505
Record 220 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); BazerBachi, AR (Bazer-Bachi, A. R.); Behera, B (Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W
Bolz, O (Bolz, O.); Borrel, V (Borrel, V.); Boutelier, T (Boutelier, T.); Braun, I (Braun, I.);
Brion, E (Brion, E.); Brown, AM (Brown, A. M.); Buhler, R (Buehler, R.); Busching, I
(Buesching, I.); Bulik, T (Bulik, T.); Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P.
M.); Clapson, AC (Clapson, A. C.); Chounet, LM (Chounet, L.-M.); Coignet, G (Coignet, G.);
Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Degrange, B (Degrange, B.);
(Domainko, W.); Drury, LO (Drury, L. O'C.); Dubus, G (Dubus, G.); Dyks, J (Dyks, J.); Egberts,
K (Egberts, K.); Emmanoulopoulos, D (Emmanoulopoulos, D.); Espigat, P (Espigat, P.); Farnier,
C (Farnier, C.); Feinstein, F (Feinstein, F.); Fiasson, A (Fiasson, A.); Forster, A (Foerster, A.);
Fontaine, G (Fontaine, G.); Funk, S (Funk, Seb.); Funk, S (Funk, S.); Fussling, M (Fuessling,
M.); Gallant, YA (Gallant, Y. A.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.);
Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C (Hadjichristidis, C.); Hauser, D
(Hauser, D.); Hauser, M (Hauser, M.); Heinzelmann, G (Heinzelmann, G.); Henri, G (Henri, G.);
Jacholkowska, A (Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Kendziorra, E (Kendziorra,
E.); Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B (Khelifi, B.); Komin, N (Komin, Nu.);
Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); Le Gallou, R
(Le Gallou, R.); Lemiere, A (Lemiere, A.); Lemoine-Goumard, M (Lemoine-Goumard, M.);
Lenain, JP (Lenain, J.-P.); Lohse, T (Lohse, T.); Martin, JM (Martin, J. M.); Martineau-Huynh,
Maurin, G (Maurin, G.); McComb, TJL (McComb, T. J. L.); Moderski, R (Moderski, R.);
Moulin, E (Moulin, E.); de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nolan, SJ
(Nolan, S. J.); Olive, JP (Olive, J-P.); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.);
(Pelletier, G.); Petrucci, PO (Petrucci, P.-O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.);
Santangelo, A (Santangelo, A.); Sauge, L (Sauge, L.); Schlenker, S (Schlenker, S.); Schlickeiser,
R (Schlickeiser, R.); Schroder, R (Schroeder, R.); Schwanke, U (Schwanke, U.); Schwarzburg, S
C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP (Tavernet, J.P.); Terrier, R (Terrier, R.); van Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.);
Zdziarski, AA (Zdziarski, A. A.)
Title: An exceptional very high energy gamma-ray flare of PKS 2155-304
Source: ASTROPHYSICAL JOURNAL, 664 (2): L71-L74 Part 2 AUG 1 2007
Abstract: The high-frequency peaked BL Lac PKS 2155-304 at redshift z = 0.116 is a wellknown VHE (> 100 GeV) gamma-ray emitter. Since 2002 its VHE flux has been monitored
using the H.E.S.S. stereoscopic array of imaging atmospheric Cerenkov telescopes in Namibia.
During the 2006 July dark period, the average VHE flux was measured to be more than 10 times
typical values observed from the object. This article focuses solely on an extreme gamma-ray
outburst detected in the early hours of 2006 July 28 (MJD 53,944). The average flux observed
during this outburst is I(> 200 GeV) = (1.72 +/- 0.05(stat) +/- 0.34(syst)) x 10(-9) cm(-2) s(-1),
corresponding to similar to 7 times the flux, I(> 200 GeV), observed from the Crab Nebula. Peak
fluxes are measured with 1 minute timescale resolution at more than twice this average value.
Variability is seen up to similar to 600 s in the Fourier power spectrum, and well- resolved bursts
varying on timescales of similar to 200 s are observed. There are no strong indications for
spectral variability within the data. Assuming the emission region has a size comparable to the
Schwarzschild radius of a similar to 10(9) M-circle dot black hole, Doppler factors greater than
100 are required to accommodate the observed variability timescales.
ISSN: 0004-637X
Record 221 of 499
J (Hose, J.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R
E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez,
Pegna, R (Pegna, R.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.);
Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, T (Saito, T.); Sanchez, A
Sobczynska, D (Sobczynska, D.); Stamerra, A (Stamerra, A.); Stark, LS (Stark, L. S.); Takalo, L
(Takalo, L.); Temnikov, P (Temnikov, P.); Tescaro, D (Tescaro, D.); Teshima, M (Teshima, M.);
Torres, DF (Torres, D. F.); Turini, N (Turini, N.); Vankov, H (Vankov, H.); Vitale, V (Vitale,
V.); Wagner, RM (Wagner, R. M.); Wibig, T (Wibig, T.); Wittek, W (Wittek, W.); Zandanel, F
(Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: Discovery of very high energy gamma radiation from IC 443 with the MAGIC telescope
Abstract: We report the detection of a new source of very high energy (VHE; E-gamma >= 100
GeV) gamma- ray emission located close to the Galactic plane, MAGIC J0616 + 225, which is
spatially coincident with supernova remnant IC 443. The observations were carried out with the
MAGIC telescope in the periods 2005 December-2006 January and 2006 December-2007
January. Here we present results from this source, leading to a VHE gamma-ray signal with a
statistical significance of 5.7 sigma in the 2006/2007 data and a measured differential gammaray flux consistent with a power law, described as dN(gamma)/(dA dt dE) = (1.0 +/- 0.2) x 10(11) (E/0.4 TeV)(-3.1 +/- 0.3) cm(-2) s(-1) TeV-1. We briefly discuss the observational technique
used and the procedure implemented for the data analysis. The results are placed in the context
of the multiwavelength emission and the molecular environment found in the region of IC 443.
ISSN: 0004-637X
Record 222 of 499
Bartko, H (Bartko, H.); Bastieri, D (Bastieri, D.); Becker, J (Becker, J.); Bednarek, W
Chilingarian, A (Chilingarian, A.); Ciprini, S (Ciprini, S.); Coarasa, JA (Coarasa, J. A.);
Commichau, S (Commichau, S.); Contreras, JL (Contreras, J. L.); Cortina, J (Cortina, J.);
Costado, MT (Costado, M. T.); Curtef, V (Curtef, V.); Danielyan, V (Danielyan, V.); Dazzi, F
(Dazzi, F.); De Angelis, A (De Angelis, A.); Delgado, C (Delgado, C.); de los Reyes, R (de los
Reyes, R.); De Lotto, B (De Lotto, B.); Domingo-Santamaria, E (Domingo-Santamaria, E.);
M.); Ferenc, D (Ferenc, D.); Fernandez, E (Fernandez, E.); Firpo, R (Firpo, R.); Flix, J (Flix, J.);
Fonseca, MV (Fonseca, M. V.); Font, L (Font, L.); Fuchs, M (Fuchs, M.); Galante, N (Galante,
N.); Garcia-Lopez, R (Garcia-Lopez, R.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug,
M.); Giller, M (Giller, M.); Goebel, F (Goebel, F.); Hakobyan, D (Hakobyan, D.); Hayashida, M
(Hayashida, M.); Hengstebeck, T (Hengstebeck, T.); Herrero, A (Herrero, A.); Hohne, D
(Hoehne, D.); Hose, J (Hose, J.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler,
T.); Kalekin, O (Kalekin, O.); Kosyra, R (Kosyra, R.); Kranich, D (Kranich, D.); Kritzer, R
(Kritzer, R.); Laille, A (Laille, A.); Lenisa, T (Lenisa, T.); Liebing, P (Liebing, P.); Lindfors, E
M.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode,
A.); Rugamer, S (Rugamer, S.); Saggion, A (Saggion, A.); Sanchez, A (Sanchez, A.); Sartori, P
SN (Shore, S. N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaa, A.); Sobczynska, D
W.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: Magic upper limits on the very high energy emission from gamma-ray bursts
Source: ASTROPHYSICAL JOURNAL, 667 (1): 358-366 Part 1 SEP 20 2007
Abstract: During its first data cycle, between 2005 and the beginning of 2006, the fast
repositioning system of the MAGIC telescope allowed the observation of nine different gammaray bursts as possible sources of very high energy gamma-rays. These observations were
triggered by alerts from Swift, HETE-2, and INTEGRAL; they started as quickly as possible
after the alerts and lasted for several minutes, with an energy threshold varying between 80 and
200 GeV, depending on the zenith angle of the burst. No evidence for gamma signals was found,
and upper limits for the flux were derived for all events using the standard analysis chain of
MAGIC. For the bursts with measured redshifts, the upper limits are compatible with a powerlaw extrapolation, when the intrinsic fluxes are evaluated taking into account the attenuation due
to the scattering in the metagalactic radiation field.
ISSN: 0004-637X
Record 223 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); BazerBachi, AR (Bazer-Bachi, A. R.); Behera, B (Behera, B.); Beilicke, M (Beilicke, M.); Benbow, W
Bolz, O (Bolz, O.); Borrel, V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brown, AM
(Brown, A. M.); Buhler, R (Buehler, R.); Busching, I (Buesching, I.); Boutelier, T (Boutelier,
T.); Carrigan, S (Carrigan, S.); Chadwick, PM (Chadwick, P. M.); Chounet, LM (Chounet, L.M.); Coignet, G (Coignet, G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.);
A.); Domainko, W (Domainko, W.); Drury, LO (Drury, L. O'C.); Dubus, G (Dubus, G.);
(Foerster, A.); Fontaine, G (Fontaine, G.); Funk, S (Funk, Seb.); Funk, S (Funk, S.); Fussling, M
(Fuessling, M.); Gallant, YA (Gallant, Y. A.); Giebels, B (Giebels, B.); Glicenstein, JF
(Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P (Goret, P.); Hadjichristidis, C
(de Jager, O. C.); Kendziorra, E (Kendziorra, E.); Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B
(Khelifi, B.); Komin, N (Komin, Nu.); Kosack, K (Kosack, K.); Lamanna, G (Lamanna, G.);
Latham, IJ (Latham, I. J.); Le Gallou, R (Le Gallou, R.); Lemiere, A (Lemiere, A.); LemoineGoumard, M (Lemoine-Goumard, M.); Lohse, T (Lohse, T.); Martin, JM (Martin, J. M.);
Martineau-Huynh, O (Martineau-Huynh, O.); Marcowith, A (Marcowith, A.); Masterson, C
(Masterson, C.); Maurin, G (Maurin, G.); McComb, TJL (McComb, T. J. L.); Moulin, E
(Moulin, E.); de Naurois, M (de Naurois, M.); Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.);
Noutsos, A (Noutsos, A.); Olive, JP (Olive, J.-P.); Orford, KJ (Orford, K. J.); Osborne, JL
(Osborne, J. L.); Panter, M (Panter, M.); Pedaletti, G (Pedaletti, G.); Pelletier, G (Pelletier, G.);
Petrucci, PO (Petrucci, P.-O.); Pita, S (Pita, S.); Puhlhofer, G (Puehlhofer, G.); Punch, M
(Punch, M.); Ranchon, S (Ranchon, S.); Raubenheimer, BC (Raubenheimer, B. C.); Raue, M
(Raue, M.); Rayner, SM (Rayner, S. M.); Ripken, J (Ripken, J.); Rob, L (Rob, L.); Rolland, L
(Rolland, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Ruppel, J (Ruppel, J.);
Sahakian, V (Sahakian, V.); Santangelo, A (Santangelo, A.); Sauge, L (Sauge, L.); Schlenker, S
(Schlenker, S.); Schlickeiser, R (Schlickeiser, R.); Schroder, R (Schroeder, R.); Schwanke, U
A (Shalchi, A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.); Steenkamp, R (Steenkamp, R.);
Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P. H.); Tavernet, JP
(Tavernet, J.-P.); Terrier, R (Terrier, R.); Tluczykont, M (Tluczykont, M.); van Eldik, C (van
Eldik, C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP (Vialle, J. P.);
Vincent, P (Vincent, P.); Volk, HJ (Voelk, H. J.); Wagner, SJ (Wagner, S. J.); Ward, M (Ward,
M.)
Title: Discovery of two candidate pulsar wind nebulae in very-high-energy gamma rays
Source: ASTRONOMY & ASTROPHYSICS, 472 (2): 489-495 SEP 2007
Abstract: Context. We present the discovery of two very-high-energy gamma-ray sources in an
ongoing systematic search for emission above 100 GeV from pulsar wind nebulae in survey data
from the HESS telescope array.
Aims. Imaging Atmospheric Cherenkov Telescopes are ideal tools for searching for extended
emission from pulsar wind nebulae in the very-high-energy regime. HESS, with its large field of
view of 5 degrees and high sensitivity, gives new prospects for the search for these objects.
Methods. An ongoing systematic search for very-high-energy emission from energetic pulsars
over the region of the Galactic plane between -60 degrees < l < 30 degrees, -2 degrees < b < 2
degrees is performed. For the resulting candidates, the standard HESS analysis was applied and a
search for multi-wavelength counterparts was performed.
Results. We present the discovery of two new candidate gamma-ray pulsar wind nebulae, HESS
J1718-385 and HESS J1809-193.
Conclusions. HESS has proven to be a suitable instrument for pulsar wind nebula searches.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20077280
Record 224 of 499
Aschenauer, EC (Aschenauer, E. C.); Augustyniak, W (Augustyniak, W.); Avakian, R (Avakian,
R.); Avetissian, A (Avetissian, A.); Avetissian, E (Avetissian, E.); Bianchi, N (Bianchi, N.);
Blok, HP (Blok, H. P.); Bottcher, H (Boettcher, H.); Bonomoi, C (Bonomoi, C.); Borissov, A
(Borissov, A.); Brull, A (Bruell, A.); Bryzgalov, V (Bryzgalov, V.); Capiluppi, M (Capiluppi,
M.); Capitani, GP (Capitani, G. P.); Cisbani, E (Cisbani, E.); Ciulloi, G (Ciulloi, G.);
Contalbrigo, M (Contalbrigo, M.); Dalpiaz, R (Dalpiaz, Re); Deconinck, W (Deconinck, W.); De
Leo, R (De Leo, R.); Demey, M (Demey, M.); De Nardo, L (De Nardo, L.); De Sanctis, E (De
Sanctis, E.); Diefenthaler, M (Diefenthaler, M.); Di Nezza, P (Di Nezza, P.); Dreschler, J
(Dreschler, J.); Duren, M (Duren, M.); Ehrenfried, M (Ehrenfried, M.); Elbakian, G (Elbakian,
G.); Ellinghaus, F (Ellinghaus, F.); Elschenbroich, U (Elschenbroich, U.); Fabbri, R (Fabbri, R.);
Fantoni, A (Fantoni, A.); Frullani, S (Frullani, S.); Gabbert, D (Gabbert, D.); Gapienko, G
(Gapienko, G.); Gapienko, V (Gapienko, V.); Garibaldi, F (Garibaldi, F.); Gavrilov, G
(Gavrilov, G.); Gharibyan, V (Gharibyan, V.); Giordano, F (Giordano, F.); Gliske, S (Gliske, S.);
Grigoryan, L (Grigoryan, L.); Hadjidakis, C (Hadjidakis, C.); Hartig, M (Hartig, M.); Hasch, D
(Hasch, D.); Hasegawa, T (Hasegawa, T.); Hill, G (Hill, G.); Hillenbrand, A (Hillenbrand, A.);
Hoek, M (Hoek, M.); Hommez, B (Hommez, B.); Hristova, I (Hristova, I.); Imazu, Y (Imazu,
Y.); Ivanilov, A (Ivanilov, A.); Jackson, HE (Jackson, H. E.); Kaiser, R (Kaiser, R.); Keri, T
(Keri, T.); Kinney, E (Kinney, E.); Kisselev, A (Kisselev, A.); Kopytin, M (Kopytin, M.);
Korotkov, V (Korotkov, V.); Kravchenko, P (Kravchenko, P.); Lagamba, L (Lagamba, L.);
Lamb, R (Lamb, R.); Lapikas, L (Lapikas, L.); Lehmann, I (Lehmann, I.); Lenisa, P (Lenisa, P.);
Liebing, P (Liebing, P.); Linden-Levy, LA (Linden-Levy, L. A.); Lorenzon, W (Lorenzon, W.);
Lu, S (Lu, S.); Lu, X (Lu, X.); Maiheu, B (Maiheu, B.); Makins, NCR (Makins, N. C. R.);
Marianski, B (Marianski, B.); Marukyan, H (Marukyan, H.); Mexner, V (Mexner, V.); Miller,
CA (Miller, C. A.); Miyachi, Y (Miyachi, Y.); Muccifora, V (Muccifora, V.); Murray, M
(Murray, M.); Mussgiller, A (Mussgiller, A.); Nappi, E (Nappi, E.); Naryshkin, Y (Naryshkin,
Y.); Nass, A (Nass, A.); Negodaev, M (Negodaev, M.); Nowak, WD (Nowak, W.-D.);
Pappalardo, LL (Pappalardo, L. L.); Perez-Benito, R (Perez-Benito, R.); Pickert, N (Pickert, N.);
Raithel, M (Raithel, M.); Reggiani, D (Reggiani, D.); Reimer, PE (Reimer, P. E.); Reischl, A
(Reischl, A.); Reolon, AR (Reolon, A. R.); Riedl, C (Riedl, C.); Rith, K (Rith, K.); Rock, SE
(Rock, S. E.); Rosner, G (Rosner, G.); Rostomyan, A (Rostomyan, A.); Rubacek, L (Rubacek,
L.); Rubin, J (Rubin, J.); Ryckbosch, D (Ryckbosch, D.); Salomatin, Y (Salomatin, Y.); Schafer,
A (Schaefer, A.); Schnell, G (Schnell, G.); Seitz, B (Seitz, B.); Shearer, C (Shearer, C.); Shibata,
TA (Shibata, T.-A.); Shutov, V (Shutov, V.); Stancari, M (Stancari, M.); Statera, M (Statera,
M.); Steijger, JJM (Steijger, J. J. M.); Stenzel, H (Stenzel, H.); Stewart, J (Stewart, J.); Stinzing,
F (Stinzing, F.); Streit, J (Streit, J.); Taroian, S (Taroian, S.); Tchuiko, B (Tchuiko, B.);
Trzcinski, A (Trzcinski, A.); Tytgat, M (Tytgat, M.); Vandenbroucke, A (Vandenbroucke, A.);
van der Nat, PBD (van der Nat, P. B.); van der Steenhoven, GD (van der Steenhoven, G.); van
Haarlem, Y (van Haarlem, Y.); van Hulse, C (van Hulse, C.); Varanda, M (Varanda, M.);
Veretennikov, D (Veretennikov, D.); Vikhrov, V (Vikhrov, V.); Vilardi, I (Vilardi, I.); Vogel, C
(Vogel, C.); Wang, S (Wang, S.); Yaschenko, S (Yaschenko, S.); Ye, Y (Ye, Y.); Ye, Z (Ye, Z.);
Ye, S (Ye, S.); Yu, W (Yu, W.); Zeiler, D (Zeiler, D.); Zihlmann, B (Zihlmann, B.); Zupranski,
P (Zupranski, P.)
Title: Hadronization in semi-inclusive deep-inelastic scattering on nuclei
Source: NUCLEAR PHYSICS B, 780 (1-2): 1-27 SEP 24 2007
Abstract: A series of semi-inclusive deep-inelastic scattering measurements on deuterium,
helium, neon, krypton, and xenon targets has been performed in order to study hadronization.
The data were collected with the HERMES detector at the DESY laboratory using a 27.6 GeV
positron or electron beam. Hadron multiplicities on nucleus A relative to those on the deuteron,
R-A(h) are presented for various hadrons (pi(+), pi(-), pi(0). K+, K-, p, and (p) over bar) as a
function of the virtual-photon energy v, the fraction z of this energy transferred to the hadron, the
photon virtuality Q(2), and the hadron transverse momentum squared P-1(2). The data reveal
ISSN: 0550-3213
DOI: 10.1016/j.nuclphysb.2007.06.004
Record 225 of 499
Author(s): Ning, LX (Ning, Lixin); Tanner, PA (Tanner, Peter A.); Harutunyan, VV
(Harutunyan, Vachagan V.); Aleksanyan, E (Aleksanyan, Eduard); Makhov, VN (Makhov,
Vladimir N.); Kirm, M (Kirm, Marco)
Title: Luminescence and excitation spectra of YAG : Nd3+ excited by synchrotron radiation
Source: JOURNAL OF LUMINESCENCE, 127 (2): 397-403 DEC 2007
Abstract: The low-temperature 4f(2)5d -> 4f(3) fast emission of Nd3+ from YAG:Nd3+ has
been studied under excitation by synchrotron radiation. Additionally, 4f(3)-> 4f(3) luminescence
of Nd3+ has been observed and assigned to transitions from the F-2(2)(5/2) and F-4(3/2)
multiplet terms. The observed experimental spectra of Nd3+ d-f emission and f-d excitation are
well simulated by crystal-field calculations. (c) 2007 Elsevier B.V. All rights reserved.
ISSN: 0022-2313
DOI: 10.1016/j.jlumin.2007.01.019
Record 226 of 499
Author(s): Ellis, J (Ellis, J.); Kotzinian, A (Kotzinian, A.); Naumov, D (Naumov, D.);
Sapozhnikov, M (Sapozhnikov, M.)
Title: Longitudinal polarisation of Lambda and (Lambda)over-bar hyperons in lepton-nucleon
deep-inelastic scattering
Source: EUROPEAN PHYSICAL JOURNAL C, 52 (2): 283-294 OCT 2007
Abstract: We consider models for the spin transfers to Lambda and (Lambda) over bar hyperons
produced in lepton-nucleon deep-inelastic scattering. We make predictions for longitudinal
Lambda and (Lambda) over bar spin transfers for the COMPASS experiment and for HERA, and
for the spin transfer to Lambda hyperons produced at JLAB. We demonstrate that accurate
measurements of the spin transfers to Lambda and (Lambda) over bar hyperons with COMPASS
kinematics have the potential to probe the intrinsic strangeness in the nucleon. We show that a
measurement of (Lambda) over bar polarisation could provide a clean probe of the spin transfer
from Lambda quarks and provides a new possibility to measure the antistrange quark distribution
function. COMPASS data in a domain of x that has not been studied previously will provide
valuable extra information to fix models for the nucleon spin structure. The spin transfer to
(Lambda) over bar hyperons, which could be measured by the COMPASS experiment, would
provide a new tool to distinguish between the SU(6) and Burkardt-Jaffe (BJ) models for baryon
spin structure. In the case of the HERA electron-proton collider experiments with longitudinallypolarised electrons, the separation between the target and current fragmentation mechanisms is
more clear. It provides a complementary probe of the strange quark distribution and helps
distinguish between the SU(6) and BJ models for the Lambda and (Lambda) over bar spin
structure. Finally, we show that the spin transfer to Lambda hyperons measured in a JLAB
experiment would be dominated by the spin transfer of the intrinsic polarised-strangeness in the
remnant nucleon, providing an independent way to check our model predictions.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0381-9
Record 227 of 499
Angelis, A.); Delgado, C (Delgado, C.); Reyes, R (de los Reyes, R.); De Lotto, B (De Lotto, B.);
Domingo-SantamariA, E (Domingo-SantamariA, E.); Dorner, D (Dorner, D.); Doro, M (Doro,
E (Fernandez, E.); Firpo, R (Firpo, R.); Flix, J (Flix, J.); Fonseca, MV (Fonseca, M. V.); Font, L
(Font, L.); Fuchs, M (Fuchs, M.); Galante, N (Galante, N.); Garcia-Lopez, RJ (Garcia-Lopez, R.
J.); Garczarczyk, M (Garczarczyk, M.); Gaug, M (Gaug, M.); Giller, M (Giller, M.); Goebel, F
(Goebel, F.); Hakobyan, D (Hakobyan, D.); Hayashida, M (Hayashida, M.); Hengstebeck, T
(Hengstebeck, T.); Herrero, A (Herrero, A.); Hohne, D (Hoehne, D.); Hose, J (Hose, J.); Hsu,
CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R (Kosyra, R.); Kranich, D
(Kranich, D.); Kritzer, R (Kritzer, R.); Laille, A (Laille, A.); Lindfors, E (Lindfors, E.);
Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez, M (Lopez, M.);
Lorenz, E (Lorenz, E.); Majumdar, P (Majumdar, P.); Maneva, G (Maneva, G.); Mannheim, K
(Mannheim, K.); Mansutti, O (Mansutti, O.); Mariotti, M (Mariotti, M.); Martinez, M (Martinez,
M.); Mazin, D (Mazin, D.); Merck, C (Merck, C.); Meucci, M (Meucci, M.); Meyer, M (Meyer,
M.); Miranda, JM (Miranda, J. M.); Mirzoyan, R (Mirzoyan, R.); Mizobuchi, S (Mizobuchi, S.);
(Persic, M.); Peruzzo, L (Peruzzo, L.); Piccioli, A (Piccioli, A.); Prandini, E (Prandini, E.);
Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode, W (Rhode, W.); Ribo, M (Ribo,
N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaeae, A.); Sobczynska, D (Sobczynska, D.);
Title: Very high energy gamma-ray radiation from the stellar mass black hole binary Cygnus X1
Abstract: We report on the results from the observations in the very high energy band ( VHE;
GeV) of the black E = 100 g hole X- ray binary ( BHXB) Cygnus X- 1. The observations were
performed with the MAGIC telescope, for a total of 40 hr during 26 nights, spanning the period
between 2006 June and November. Searches for steady gamma - ray signals yielded no positive
result, and upper limits to the integral flux ranging between 1% and 2% of the Crab Nebula flux,
depending on the energy, have been established. We also analyzed each observation night
independently, obtaining evidence of gamma- ray signals at the 4.0 j significance level ( 3.2 j
after trial correction) for 154 minutes of effective on- time ( EOT) on September 24 between 20:
58 and 23: 41 UTC, coinciding with an X- ray flare seen by RXTE, Swift, and INTEGRAL. A
search for faster- varying signals within a night resulted in an excess with a significance of 4.9 j (
4.1 j after trial correction) for 79 minutes EOT between 22: 17 and 23: 41 UTC. The measured
excess is compatible with a pointlike source at the position of Cygnus X- 1 and excludes the
nearby radio nebula powered by its relativistic jet. The differential energy spectrum is well fitted
by an unbroken power law described as dN/(dA dt dE) = ( 2.3 +/- 0.6)* 10 ( E/1TeV). This is the
first experimental evidence of VHE emission from a stellar mass black hole and therefore from a
confirmed accreting X- ray binary.
ISSN: 0004-637X
Record 228 of 499
Author(s): Adamyan, F (Adamyan, F.); Aganyants, A (Aganyants, A.); Hakobyan, H
(Hakobyan, H.); Manukyan, J (Manukyan, J.); Oganezov, R (Oganezov, R.); Sargsyan, L
(Sargsyan, L.); Sirunyan, A (Sirunyan, A.); Vartapetian, H (Vartapetian, H.); Jones, RT (Jones,
R. T.)
Title: Experimental study of photon beam polarimetry based on nuclear e(+)e(-) pair production
in an amorphous target
579 (3): 973-978 SEP 11 2007
Abstract: The degree of linear polarization of a coherent bremsstrahlung (CB) was measured
using an azimuthal asymmetry of incoherent e(+)e(-) pair production. The measurement was
carried out in the gamma-2 photon beam line of the Yerevan synchrotron, using a 2.55 GeV
electron beam and a diamond radiator oriented to position the primary coherent peak in the
interval 0.9-1.1 GeV. The polarization at the peak was measured to be 0.56 +/- 0.06, in good
agreement with the value computed from CB spectral shape analysis. (c) 2007 Elsevier B.V. All
rights reserved.
ISSN: 0168-9002
DOI: 10.1016/j.nima.2007.06.024
Record 229 of 499
Angelis, A.); Delgado, C (Delgado, C.); Reyes, RD (Reyes, R. de los); De Lotto, B (De Lotto,
J (Hose, J.); Hsu, CC (Hsu, C. C.); Jacon, P (Jacon, P.); Jogler, T (Jogler, T.); Kosyra, R
E (Lindfors, E.); Lombardi, S (Lombardi, S.); Longo, F (Longo, F.); Lopez, J (Lopez, J.); Lopez,
Pegna, R (Pegna, R.); Perlman, E (Perlman, E.); Persic, M (Persic, M.); Peruzzo, L (Peruzzo, L.);
M.); Robert, A (Robert, A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Saito, T
(Saito, T.); Sanchez, A (Sanchez, A.); Sartori, P (Sartori, P.); Scalzotto, V (Scalzotto, V.);
Sillanpaa, A (Sillanpaa, A.); Sobczynska, D (Sobczynska, D.); Stamerra, A (Stamerra, A.);
Stark, LS (Stark, L. S.); Takalo, L (Takalo, L.); Tavecchio, F (Tavecchio, F.); Temnikov, P
Title: Discovery of very high energy gamma-rays from 1ES 1011+496 at z=0.212
Source: ASTROPHYSICAL JOURNAL, 667 (1): L21-L24 Part 2 SEP 20 2007
Abstract: We report on the discovery of very high energy (VHE) gamma-ray emission from the
BL Lacertae object 1ES 1011+496. The observation was triggered by an optical outburst in 2007
March and the source was observed with the MAGIC telescope from 2007 March to May.
Observing for 18.7 hr, we find an excess of 6.2 sigma with an integrated flux above 200 GeV of
( 1.58 +/- 0.32) x 10(-11) photons cm(-2) s(-1). The VHE gamma-ray flux is > 40% higher than
in 2006 March-April ( reported elsewhere), indicating that the VHE emission state may be
related to the optical emission state. We have also determined the redshift of 1ES 1011+496
based on an optical spectrum that reveals the absorption lines of the host galaxy. The redshift of
z = 0.212 makes 1ES 1011+496 the most distant source observed to emit VHE gamma-rays to
date.
ISSN: 0004-637X
Record 230 of 499
Author(s): Kozlov, M (Kozlov, M.); Levin, E (Levin, E.); Khachatryan, V (Khachatryan, V.);
Miller, J (Miller, J.)
Title: The BFKL pomeron calculus in zero transverse dimensions: Diffractive processes and
survival probability for central diffractive production
Source: NUCLEAR PHYSICS A, 791 (3-4): 382-405 JUL 15 2007
Abstract: In this paper we discuss the processes of diffractive production in the framework of
the BFKL pomeron calculus in zero transverse dimension. Considering the diffractive production
of a bunch of particles with not very large masses, namely, In(M-2/m(2)) << 1/alpha s (Nc(2)/alpha(-2)(S)) we found explicit formulae for calculation of the cross sections for the single
and double diffractive production as well as for the value of the survival probability for the
diffiractive central production. These formulae include the influence of the correlations due to
so-called pomeron loops on the values of all discussed observables. The comparison with the
other approaches on the market is given. The main conclusion of this comparison: the MuellerPatel-Salam-Iancu approximation gives sufficiently good descriptions and close to the exact
result for elastic and diffractive cross section but considerable overshoot the value of the survival
probability. (C) 2007 Elsevier B.V. All rights reserved.
ISSN: 0375-9474
DOI: 10.1016/j.nuclphysa.2007.04.017
Record 231 of 499
Author(s): Shneor, R (Shneor, R.); Monaghan, P (Monaghan, P.); Subedi, R (Subedi, R.);
Anderson, BD (Anderson, B. D.); Aniol, K (Aniol, K.); Annand, J (Annand, J.); Arrington, J
(Arrington, J.); Benaoum, H (Benaoum, H.); Benmokhtar, F (Benmokhtar, F.); Bertin, P (Bertin,
P.); Bertozzi, W (Bertozzi, W.); Boeglin, W (Boeglin, W.); Chen, JP (Chen, J. P.); Choi, S
(Choi, Seonho); Chudakov, E (Chudakov, E.); Cisbani, E (Cisbani, E.); Craver, B (Craver, B.);
De Jager, CW (De Jager, C. W.); Feuerbach, RJ (Feuerbach, R. J.); Frullani, S (Frullani, S.);
Garibaldi, F (Garibaldi, F.); Gayou, O (Gayou, O.); Gilad, S (Gilad, S.); Gilman, R (Gilman, R.);
Glamazdin, O (Glamazdin, O.); Gomez, J (Gomez, J.); Hansen, JO (Hansen, J.-O.);
Higinbotham, DW (Higinbotham, D. W.); Holmstrom, T (Holmstrom, T.); Ibrahim, H (Ibrahim,
H.); Igarashi, R (Igarashi, R.); Jans, E (Jans, E.); Jiang, X (Jiang, X.); Jiang, Y (Jiang, Y.);
Kaufman, L (Kaufman, L.); Kelleher, A (Kelleher, A.); Kolarkar, A (Kolarkar, A.); Kuchina, E
(Kuchina, E.); Kumbartzki, G (Kumbartzki, G.); LeRose, JJ (LeRose, J. J.); Lindgren, R
(Lindgren, R.); Liyanage, N (Liyanage, N.); Margaziotis, DJ (Margaziotis, D. J.); Markowitz, P
(Markowitz, P.); Marrone, S (Marrone, S.); Mazouz, M (Mazouz, M.); Meekins, D (Meekins,
D.); Michaels, R (Michaels, R.); Moffit, B (Moffit, B.); Nanda, S (Nanda, S.); Perdrisat, CF
(Perdrisat, C. F.); Piasetzky, E (Piasetzky, E.); Potokar, M (Potokar, M.); Punjabi, V (Punjabi,
V.); Qiang, Y (Qiang, Y.); Reinhold, J (Reinhold, J.); Reitz, B (Reitz, B.); Ron, G (Ron, G.);
Rosner, G (Rosner, G.); Saha, A (Saha, A.); Sawatzky, B (Sawatzky, B.); Shahinyan, A
(Shahinyan, A.); Sirca, S (Sirca, S.); Slifer, K (Slifer, K.); Solvignon, P (Solvignon, P.);
Sulkosky, V (Sulkosky, V.); Thompson, N (Thompson, N.); Ulmer, PE (Ulmer, P. E.); Urciuoli,
GM (Urciuoli, G. M.); Voutier, E (Voutier, E.); Wang, K (Wang, K.); Watson, JW (Watson, J.
W.); Weinstein, LB (Weinstein, L. B.); Wojtsekhowski, B (Wojtsekhowski, B.); Wood, S
(Wood, S.); Yao, H (Yao, H.); Zheng, X (Zheng, X.); Zhu, L (Zhu, L.)
Title: Investigation of proton-proton short-range correlations via the C-12(e,e'pp) reaction
Source: PHYSICAL REVIEW LETTERS, 99 (7): Art. No. 072501 AUG 17 2007
Abstract: We investigated simultaneously the C-12(e,e'p) and C-12(e,e'pp) reactions at Q(2)=2
(GeV/c)(2), x(B)=1.2, and in an (e, e'p) missing-momentum range from 300 to 600 MeV/c. At
these kinematics, with a missing momentum greater than the Fermi momentum of nucleons in a
nucleus and far from the delta excitation, short-range nucleon-nucleon correlations are predicted
to dominate the reaction. For (9.5 +/- 2)% of the C-12(e,e'p) events, a recoiling partner proton
was observed back-to-back to the C-12(e,e'p) missing-momentum vector, an experimental
signature of correlations.
ISSN: 0031-9007
Record 232 of 499
Author(s): Armstrong, DS (Armstrong, D. S.); Arvieux, J (Arvieux, J.); Asaturyan, R
(Asaturyan, R.); Averett, T (Averett, T.); Bailey, SL (Bailey, S. L.); Batigne, G (Batigne, G.);
Beck, DH (Beck, D. H.); Beise, EJ (Beise, E. J.); Benesch, J (Benesch, J.); Bimbot, L (Bimbot,
L.); Birchall, J (Birchall, J.); Biselli, A (Biselli, A.); Bosted, P (Bosted, P.); Boukobza, E
(Boukobza, E.); Breuer, H (Breuer, H.); Carlini, R (Carlini, R.); Carr, R (Carr, R.); Chant, N
(Chant, N.); Chao, YC (Chao, Y.-C.); Chattopadhyay, S (Chattopadhyay, S.); Clark, R (Clark,
R.); Covrig, S (Covrig, S.); Cowley, A (Cowley, A.); Dale, D (Dale, D.); Davis, C (Davis, C.);
Falk, W (Falk, W.); Finn, JM (Finn, J. M.); Forest, T (Forest, T.); Franklin, G (Franklin, G.);
Furget, C (Furget, C.); Gaskell, D (Gaskell, D.); Grames, J (Grames, J.); Griffioen, KA
(Griffioen, K. A.); Grimm, K (Grimm, K.); Guillon, B (Guillon, B.); Guler, H (Guler, H.);
Hannelius, L (Hannelius, L.); Hasty, R (Hasty, R.); Allen, AH (Allen, A. Hawthorne); Horn, T
(Horn, T.); Johnston, K (Johnston, K.); Jones, M (Jones, M.); Kammel, P (Kammel, P.); Kazimi,
R (Kazimi, R.); King, PM (King, P. M.); Kolarkar, A (Kolarkar, A.); Korkmaz, E (Korkmaz, E.);
Korsch, W (Korsch, W.); Kox, S (Kox, S.); Kuhn, J (Kuhn, J.); Lachniet, J (Lachniet, J.); Lee, L
(Lee, L.); Lenoble, J (Lenoble, J.); Liatard, E (Liatard, E.); Liu, J (Liu, J.); Loupias, B (Loupias,
B.); Lung, A (Lung, A.); Marchand, D (Marchand, D.); Martin, JW (Martin, J. W.); McFarlane,
KW (McFarlane, K. W.); Mckee, DW (Mckee, D. W.); McKeown, RD (McKeown, R. D.);
Merchez, F (Merchez, F.); Mkrtchyan, H (Mkrtchyan, H.); Moffit, B (Moffit, B.); Morlet, M
(Morlet, M.); Nakagawa, I (Nakagawa, I.); Nakahara, K (Nakahara, K.); Neveling, R (Neveling,
R.); Ong, S (Ong, S.); Page, S (Page, S.); Papavassiliou, V (Papavassiliou, V.); Pate, SF (Pate, S.
F.); Phillips, SK (Phillips, S. K.); Pitt, ML (Pitt, M. L.); Poelker, M (Poelker, M.); Porcelli, TA
(Porcelli, T. A.); Quemener, G (Quemener, G.); Quinn, B (Quinn, B.); Ramsay, WD (Ramsay,
W. D.); Rauf, AW (Rauf, A. W.); Real, JS (Real, J.-S.); Roche, J (Roche, J.); Roos, P (Roos, P.);
Rutledge, GA (Rutledge, G. A.); Secrest, J (Secrest, J.); Simicevic, N (Simicevic, N.); Smith, GR
(Smith, G. R.); Spayde, DT (Spayde, D. T.); Stepanyan, S (Stepanyan, S.); Stutzman, M
(Stutzman, M.); Sulkosky, V (Sulkosky, V.); Tadevosyan, V (Tadevosyan, V.); Tieulent, R
(Tieulent, R.); de Wiele, JV (de Wiele, J. Van); van Oers, WTH (van Oers, W. T. H.); Voutier, E
(Voutier, E.); Vulcan, W (Vulcan, W.); Warren, G (Warren, G.); Wells, SP (Wells, S. P.);
Williamson, SE (Williamson, S. E.); Wood, SA (Wood, S. A.); Yan, C (Yan, C.); Yun, J (Yun,
J.); Zeps, V (Zeps, V.)
Title: Transverse beam spin asymmetries in forward-angle elastic electron-proton scattering
Abstract: We have measured the beam-normal single-spin asymmetry in elastic scattering of
transversely polarized 3 GeV electrons from unpolarized protons at Q(2)=0.15, 0.25 (GeV/c)(2).
The results are inconsistent with calculations solely using the elastic nucleon intermediate state
and generally agree with calculations with significant inelastic hadronic intermediate state
contributions. A(n) provides a direct probe of the imaginary component of the 2 gamma
exchange amplitude, the complete description of which is important in the interpretation of data
from precision electron-scattering experiments.
ISSN: 0031-9007
Record 233 of 499
Author(s): Ghulghazaryan, RG (Ghulghazaryan, R. G.); Sargsyan, KG (Sargsyan, K. G.);
Ananikian, NS (Ananikian, N. S.)
Title: Partition function zeros of the one-dimensional Blume-Capel model in transfer matrix
formalism
Source: PHYSICAL REVIEW E, 76 (2): Art. No. 021104 Part 1 AUG 2007
Abstract: Zeros of the partition function of the one-dimensional ferromagnetic and
antiferromagnetic Blume-Capel models have been studied by using the transfer matrix method in
the thermodynamic limit and for finite size chains. The equation for the distribution of zeros of
the partition function in the thermodynamic limit is derived. The distribution of the Yang-Lee
and Fisher zeros are studied for a variety of values of the parameters of the model. Densities of
the Yang-Lee and Fisher zeros are investigated and a singular behavior of the corresponding
densities of zeros at the edge points is shown. The edge singularity exponents are calculated
analytically for the densities of the Yang-Lee and Fisher zeros. It is found that for both cases
edge singularity exponents are universal and equal to sigma=-1/2.
ISSN: 1539-3755
DOI: 10.1103/PhysRevE.76.021104
Record 234 of 499
Author(s): Denizli, H (Denizli, H.); Mueller, J (Mueller, J.); Dytman, S (Dytman, S.); Leber,
ML (Leber, M. L.); Levine, RD (Levine, R. D.); Miles, J (Miles, J.); Kim, KY (Kim, K. Y.);
Adams, G (Adams, G.); Amaryan, MJ (Amaryan, M. J.); Ambrozewicz, P (Ambrozewicz, P.);
Anghinolfi, M (Anghinolfi, M.); Asavapibhop, B (Asavapibhop, B.); Asryan, G (Asryan, G.);
Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N (Baillie, N.); Ball, JP
(Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Batourine, V (Batourine, V.);
Battaglieri, M (Battaglieri, M.); Beard, K (Beard, K.); Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu,
M (Bektasoglu, M.); Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.); Bianchi, N (Bianchi,
N.); Biselli, AS (Biselli, A. S.); Bonner, BE (Bonner, B. E.); Bouchigny, S (Bouchigny, S.);
WJ (Briscoe, W. J.); Brooks, WK (Brooks, W. K.); Ultmann, SBR (Ultmann, S. B. R.); Burkert,
VD (Burkert, V. D.); Butuceanu, C (Butuceanu, C.); Calarco, JR (Calarco, J. R.); Careccia, SL
(Careccia, S. L.); Carman, DS (Carman, D. S.); Cetina, C (Cetina, C.); Chen, S (Chen, S.); Cole,
PL (Cole, P. L.); Coleman, A (Coleman, A.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.);
Cords, D (Cords, D.); Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crede, V (Crede, V.);
Cummings, JP (Cummings, J. P.); Dashyan, N (Dashyan, N.); De Vita, R (De Vita, R.); De
Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Dennis, L (Dennis, L.);
Deur, A (Deur, A.); Dhuga, KS (Dhuga, K. S.); Dickson, R (Dickson, R.); Djalali, C (Djalali,
C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.);
Dragovitsch, P (Dragovitsch, P.); Dugger, M (Dugger, M.); Dzyubak, OP (Dzyubak, O. P.);
Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L
(Elouadrhiri, L.); Empl, A (Empl, A.); Eugenio, P (Eugenio, P.); Farhi, L (Farhi, L.); Fatemi, R
(Fatemi, R.); Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Feuerbach, RJ (Feuerbach,
R. J.); Forest, TA (Forest, T. A.); Frolov, V (Frolov, V.); Funsten, H (Funsten, H.); Gaff, SJ
(Gaff, S. J.); On, MG (On, M. Garc); Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G. P.);
Giovanetti, KL (Giovanetti, K. L.); Girard, P (Girard, P.); Girod, FX (Girod, F. X.); Goetz, JT
(Goetz, J. T.); Gonenc, A (Gonenc, A.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K.
A.); Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L (Guo, L.);
Gyurjyan, V (Gyurjyan, V.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hakobyan,
RS (Hakobyan, R. S.); Hardie, J (Hardie, J.); Heddle, D (Heddle, D.); Hersman, FW (Hersman,
F. W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hu, J (Hu, J.);
McAleer, S (McAleer, S.); McKinnon, B (McKinnon, B.); McNabb, JWC (McNabb, J. W. C.);
Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer, CA (Meyer, C. A.);
Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart, R.); Mirazita, M
(Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.); Moriya, K (Moriya, K.)
Title: Q(2) dependence of the S-11(1535) photocoupling and evidence for a P-wave resonance in
eta electroproduction
Abstract: New cross sections for the reaction ep -> e'eta p are reported for total center-of-mass
energy W=1.5-2.3 GeV and invariant squared momentum transfer Q(2)=0.13-3.3 GeV2. This
large kinematic range allows the extraction of new information about response functions,
photocouplings, and eta N coupling strengths of baryon resonances. A sharp structure is seen at
W similar to 1.7 GeV. The shape of the differential cross section is indicative of the presence of
a P-wave resonance that persists to high Q(2). Improved values are derived for the photocoupling
amplitude for the S-11(1535) resonance. The new data greatly expand the Q(2) range covered,
and an interpretation of all data with a consistent parametrization is provided.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.015204
Record 235 of 499
Author(s): Guo, L (Guo, L.); Weygand, DP (Weygand, D. P.); Battaglieri, M (Battaglieri, M.);
De Vita, R (De Vita, R.); Kubarovsky, V (Kubarovsky, V.); Stoler, P (Stoler, P.); Amaryan, MJ
(Amaryan, M. J.); Ambrozewicz, P (Ambrozewicz, P.); Anghinolfi, M (Anghinolfi, M.); Asryan,
G (Asryan, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N
(Baillie, N.); Ball, JP (Ball, J. P.); Baltzell, NA (Baltzell, N. A.); Batourine, V (Batourine, V.);
Battaglieri, M (Battaglieri, M.); Bedlinskiy, I (Bedlinskiy, I.); Bellis, M (Bellis, M.); Benmouna,
W. K.); Bultmann, S (Bueltmann, S.); Burkert, VD (Burkert, V. D.); Butuceanu, C (Butuceanu,
C.); Calarco, JR (Calarco, J. R.); Careccia, SL (Careccia, S. L.); Carman, DS (Carman, D. S.);
Chen, S (Chen, S.); Cole, PL (Cole, P. L.); Collins, P (Collins, P.); Coltharp, P (Coltharp, P.);
Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Crede, V (Crede, V.); Cummings, JP
(Cummings, J. P.); Dashyan, N (Dashyan, N.); De Masi, R (De Masi, R.); De Vita, R (De Vita,
R.); De Sanctis, E (De Sanctis, E.); Degtyarenko, PV (Degtyarenko, P. V.); Deur, A (Deur, A.);
Dharmawardane, KV (Dharmawardane, K. V.); Dickson, R (Dickson, R.); Djalali, C (Djalali,
C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.); Doughty, D (Doughty, D.); Dugger,
M (Dugger, M.); Dzyubak, OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan,
K. S.); El Fassi, L (El Fassi, L.); Elouadrhiri, L (Elouadrhiri, L.); Eugenio, P (Eugenio, P.);
Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Funsten, H (Funsten, H.); Garcon, M
(Garcon, M.); Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL
(Giovanetti, K. L.); Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gonenc, A (Gonenc, A.);
Gordon, CIO (Gordon, C. I. O.); Gothe, RW (Gothe, R. W.); Griffioen, KA (Griffioen, K. A.);
Guidal, M (Guidal, M.); Guler, N (Guler, N.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C
(Hadjidakis, C.); Hafidi, K (Hafidi, K.); Hakobyan, H (Hakobyan, H.); Hakobyan, RS
(Hakobyan, R. S.); Hanretty, C (Hanretty, C.); Hardie, J (Hardie, J.); Hersman, FW (Hersman, F.
W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hyde-Wright,
CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland, DG (Ireland, D. G.); Ishkhanov, BS
Johnstone, R (Johnstone, R.); Jo, HS (Jo, H. S.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.);
Kalantarians, N (Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.);
Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.); Klimenko, AV (Klimenko, A.
V.); Kossov, M (Kossov, M.); Krahn, Z (Krahn, Z.); Kramer, LH (Kramer, L. H.); Kuhn, J
(Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuleshov, SV (Kuleshov, S. V.); Lachniet, J (Lachniet, J.);
T (Lee, T.); Li, J (Li, Ji); Livingston, K (Livingston, K.); Lu, HY (Lu, H. Y.); MacCormick, M
(MacCormick, M.); Markov, N (Markov, N.); Mattione, P (Mattione, P.); McKinnon, B
(McKinnon, B.); Mecking, BA (Mecking, B. A.); Melone, JJ (Melone, J. J.); Mestayer, MD
(Mestayer, M. D.); Meyer, CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov,
K.); Minehart, R (Minehart, R.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.);
Mokeev, V (Mokeev, V.); Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.); Moteabbed, M
(Moteabbed, M.); Munevar, E (Munevar, E.); Mutchler, GS (Mutchler, G. S.); Nadel-Turonski, P
(Nadel-Turonski, P.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.); Niculescu, G
(Niculescu, G.); Niculescu, I (Niculescu, I.); Niczyporuk, BB (Niczyporuk, B. B.); Niroula, MR
(Niroula, M. R.); Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); Osipenko, M
(Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K (Park, K.); Pasyuk, E (Pasyuk, E.);
Paterson, C (Paterson, C.); Pereira, SA (Pereira, S. Anefalos); Pierce, J (Pierce, J.); Pivnyuk, N
(Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S
(Pozdniakov, S.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.); Protopopescu, D (Protopopescu,
D.); Raue, BA (Raue, B. A.); Riccardi, G (Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M
DI (Sober, D. I.); Sokhan, D (Sokhan, D.); Stavinsky, A (Stavinsky, A.); Stepanyan, SS
(Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.); Strakovsky, II
(Strakovsky, I. I.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Tedeschi, DJ (Tedeschi, D.
J.); Thoma, U (Thoma, U.); Tkabladze, A (Tkabladze, A.); Tkachenko, S (Tkachenko, S.);
Todor, L (Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.); Vineyard, MF (Vineyard, M.
F.); Vlassov, AV (Vlassov, A. V.); Watts, DP (Watts, D. P.); Weinstein, LB (Weinstein, L. B.);
Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A
(Yegneswaran, A.); Zana, L (Zana, L.); Zhang, J (Zhang, J.); Zhao, B (Zhao, B.); Zhao, ZW
(Zhao, Z. W.)
Title: Cascade production in the reactions gamma p -> K+K+(X) and gamma p -> K+K+pi(-)(X)
Abstract: Photoproduction of the cascade resonances has been investigated in the reactions
gamma p -> K+K+(X) and gamma p -> K+K+pi(-)(X). The mass splitting of the ground state
(Xi(-),Xi(0)) doublet is measured to be 5.4 +/- 1.8 MeV/c(2), consistent with existing
measurements. The differential (total) cross sections for the Xi(-) have been determined for
photon beam energies from 2.75 to 3.85 (4.75) GeV and are consistent with a production
mechanism of Y-*-> K+Xi(-) through a t-channel process. The reaction gamma p -> K+K+pi()[Xi(0)] has also been investigated to search of excited cascade resonances. No significant signal
of excited cascade states other than the Xi(-)(1530) is observed. The cross-section results of the
Xi(-)(1530) have also been obtained for photon beam energies from 3.35 to 4.75 GeV.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.025208
Record 236 of 499
Author(s): Dugger, M (Dugger, M.); Ritchie, BG (Ritchie, B. G.); Ball, JP (Ball, J. P.); Collins,
P (Collins, P.); Pasyuk, E (Pasyuk, E.); Arndt, RA (Arndt, R. A.); Briscoe, WJ (Briscoe, W. J.);
Strakovsky, II (Strakovsky, I. I.); Workman, RL (Workman, R. L.); Adams, G (Adams, G.);
Amarian, M (Amarian, M.); Ambrozewicz, P (Ambrozewicz, P.); Anciant, E (Anciant, E.);
Anghinolfi, M (Anghinolfi, M.); Asavapibhop, B (Asavapibhop, B.); Asryan, G (Asryan, G.);
Audit, G (Audit, G.); Avakian, H (Avakian, H.); Bagdasaryan, H (Bagdasaryan, H.); Baillie, N
(Baillie, N.); Baltzell, NA (Baltzell, N. A.); Barrow, S (Barrow, S.); Battaglieri, M (Battaglieri,
M.); Beard, K (Beard, K.); Bedlinskiy, I (Bedlinskiy, I.); Bektasoglu, M (Bektasoglu, M.);
Bellis, M (Bellis, M.); Benmouna, N (Benmouna, N.); Berman, BL (Berman, B. L.); Bianchi, N
(Bianchi, N.); Biselli, AS (Biselli, A. S.); Bonner, BE (Bonner, B. E.); Bouchigny, S
(Bouchigny, S.); Boiarinov, S (Boiarinov, S.); Bradford, R (Bradford, R.); Branford, D
(Branford, D.); Brooks, WK (Brooks, W. K.); Bultmann, S (Bueltmann, S.); Burkert, VD
(Careccia, S. L.); Carman, DS (Carman, D. S.); Carnahan, B (Carnahan, B.); Chen, S (Chen, S.);
Cole, PL (Cole, P. L.); Coleman, A (Coleman, A.); Coltharp, P (Coltharp, P.); Cords, D (Cords,
D.); Corvisiero, P (Corvisiero, P.); Crabb, D (Crabb, D.); Crannell, H (Crannell, H.); Cummings,
JP (Cummings, J. P.); De Sanctis, E (De Sanctis, E.); De Vita, R (De Vita, R.); Degtyarenko, PV
(Degtyarenko, P. V.); Denizli, H (Denizli, H.); Dennis, L (Dennis, L.); Deur, A (Deur, A.);
Dharmawardane, KV (Dharmawardane, K. V.); Dhuga, KS (Dhuga, K. S.); Dickson, R
(Dickson, R.); Djalali, C (Djalali, C.); Dodge, GE (Dodge, G. E.); Donnelly, J (Donnelly, J.);
Doughty, D (Doughty, D.); Dragovitsch, P (Dragovitsch, P.); Dytman, S (Dytman, S.); Dzyubak,
OP (Dzyubak, O. P.); Egiyan, H (Egiyan, H.); Egiyan, KS (Egiyan, K. S.); Elouadrhiri, L
(Elouadrhiri, L.); Empl, A (Empl, A.); Eugenio, P (Eugenio, P.); Fatemi, R (Fatemi, R.);
Fedotov, G (Fedotov, G.); Feldman, G (Feldman, G.); Feuerbach, RJ (Feuerbach, R. J.); Ficenec,
J (Ficenec, J.); Forest, TA (Forest, T. A.); Funsten, H (Funsten, H.); Garcon, M (Garcon, M.);
Gavalian, G (Gavalian, G.); Gilfoyle, GP (Gilfoyle, G. P.); Giovanetti, KL (Giovanetti, K. L.);
Girod, FX (Girod, F. X.); Goetz, JT (Goetz, J. T.); Gothe, RW (Gothe, R. W.); Griffioen, KA
(Griffioen, K. A.); Guidal, M (Guidal, M.); Guillo, M (Guillo, M.); Guler, N (Guler, N.); Guo, L
(Guo, L.); Gyurjyan, V (Gyurjyan, V.); Hadjidakis, C (Hadjidakis, C.); Hakobyan, RS
(Hakobyan, R. S.); Hardie, J (Hardie, J.); Heddle, D (Heddle, D.); Hersman, FW (Hersman, F.
W.); Hicks, K (Hicks, K.); Hleiqawi, I (Hleiqawi, I.); Holtrop, M (Holtrop, M.); Hu, J (Hu, J.);
Huertas, M (Huertas, M.); Hyde-Wright, CE (Hyde-Wright, C. E.); Ilieva, Y (Ilieva, Y.); Ireland,
DG (Ireland, D. G.); Ishkhanov, BS (Ishkhanov, B. S.); Ito, MM (Ito, M. M.); Jenkins, D
(Jenkins, D.); Jo, HS (Jo, H. S.); Joo, K (Joo, K.); Juengst, HG (Juengst, H. G.); Kalantarians, N
(Kalantarians, N.); Kellie, JD (Kellie, J. D.); Khandaker, M (Khandaker, M.); Kim, KY (Kim, K.
Y.); Kim, K (Kim, K.); Kim, W (Kim, W.); Klein, A (Klein, A.); Klein, FJ (Klein, F. J.);
Klimenko, AV (Klimenko, A. V.); Klusman, M (Klusman, M.); Kossov, M (Kossov, M.);
(Kuhn, J.); Kuhn, SE (Kuhn, S. E.); Kuznetsov, V (Kuznetsov, V.); Lachniet, J (Lachniet, J.);
T (Lee, T.); Lima, ACS (Lima, A. C. S.); Livingston, K (Livingston, K.); Lukashin, K
(Lukashin, K.); Manak, JJ (Manak, J. J.); Marchand, C (Marchand, C.); Maximon, LC
(Maximon, L. C.); McAleer, S (McAleer, S.); McKinnon, B (McKinnon, B.); McNabb, JWC
(McNabb, J. W. C.); Mecking, BA (Mecking, B. A.); Mestayer, MD (Mestayer, M. D.); Meyer,
CA (Meyer, C. A.); Mibe, T (Mibe, T.); Mikhailov, K (Mikhailov, K.); Minehart, R (Minehart,
R.); Mirazita, M (Mirazita, M.); Miskimen, R (Miskimen, R.); Mokeev, V (Mokeev, V.);
Moriya, K (Moriya, K.); Morrow, SA (Morrow, S. A.); Muccifora, V (Muccifora, V.); Mueller, J
(Mueller, J.); Mutchler, GS (Mutchler, G. S.); Nadel-Turonski, P (Nadel-Turonski, P.);
Napolitano, J (Napolitano, J.); Nasseripour, R (Nasseripour, R.); Niccolai, S (Niccolai, S.);
Niroula, M (Niroula, M.); Niyazov, RA (Niyazov, R. A.); Nozar, M (Nozar, M.); O'Rielly, GV
(O'Rielly, G. V.); Osipenko, M (Osipenko, M.); Ostrovidov, AI (Ostrovidov, A. I.); Park, K
(Park, K.); Paterson, C (Paterson, C.); Philips, SA (Philips, S. A.); Pierce, J (Pierce, J.); Pivnyuk,
N (Pivnyuk, N.); Pocanic, D (Pocanic, D.); Pogorelko, O (Pogorelko, O.); Pozdniakov, S
(Pozdniakov, S.); Preedom, BM (Preedom, B. M.); Price, JW (Price, J. W.); Prok, Y (Prok, Y.);
(Riccardi, G.); Ricco, G (Ricco, G.); Ripani, M (Ripani, M.); Ronchetti, F (Ronchetti, F.);
Rosner, G (Rosner, G.); Rossi, P (Rossi, P.); Rowntree, D (Rowntree, D.); Rubin, PD (Rubin, P.
D.); Sabatie, F (Sabatie, F.); Slamanca, J (Slamanca, J.); Salgado, C (Salgado, C.); Santoro, JP
(Santoro, J. P.); Sapunenko, V (Sapunenko, V.); Schumacher, RA (Schumacher, R. A.); Serov,
VS (Serov, V. S.); Shafi, A (Shafi, A.); Sharabian, YG (Sharabian, Y. G.); Shaw, J (Shaw, J.);
Simionatto, S (Simionatto, S.); Skabelin, AV (Skabelin, A. V.); Smith, ES (Smith, E. S.); Smith,
LC (Smith, L. C.); Sober, DI (Sober, D. I.); Spraker, M (Spraker, M.); Stavinsky, A (Stavinsky,
A.); Stepanyan, SS (Stepanyan, S. S.); Stepanyan, S (Stepanyan, S.); Stokes, BE (Stokes, B. E.);
Stoler, P (Stoler, P.); Strauch, S (Strauch, S.); Taiuti, M (Taiuti, M.); Taylor, S (Taylor, S.);
Tedeschi, DJ (Tedeschi, D. J.); Thompson, R (Thompson, R.); Tkabladze, A (Tkabladze, A.);
Tkachenko, S (Tkachenko, S.); Todor, L (Todor, L.); Tur, C (Tur, C.); Ungaro, M (Ungaro, M.);
Vineyard, MF (Vineyard, M. F.); Vlassov, AV (Vlassov, A. V.); Wang, K (Wang, K.);
Weinstein, LB (Weinstein, L. B.); Weller, H (Weller, H.); Weygand, DP (Weygand, D. P.);
Williams, M (Williams, M.); Wolin, E (Wolin, E.); Wood, MH (Wood, M. H.); Yegneswaran, A
(Yegneswaran, A.); Yun, J (Yun, J.); Zana, L (Zana, L.); Zhang, J (Zhang, J.)
Title: pi(0) photoproduction on the proton for photon energies from 0.675 to 2.875 GeV
Abstract: Differential cross sections for the reaction gamma p -> p pi(0) have been measured
with the CEBAF Large Acceptance Spectrometer (CLAS) and a tagged photon beam with
energies from 0.675 to 2.875 GeV. The results reported here possess greater accuracy in the
absolute normalization than previous measurements. They disagree with recent CB-ELSA
measurements for the process at forward scattering angles. Agreement with the SAID and MAID
fits is found below 1 GeV. The present set of cross sections has been incorporated into the SAID
database, and exploratory fits have been extended to 3 GeV. Resonance couplings have been
extracted and compared to previous determinations.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.025211
Record 237 of 499
Author(s): Aznauryan, IG (Aznauryan, I. G.)
Title: Electroexcitation of the Roper resonance in relativistic quark models
Abstract: The amplitudes of the transition gamma N-*-> P-11(1440) are calculated within lightfront relativistic quark model assuming that the P-11(1440) is the first radial excitation of the 3q
ground state. The results are presented along with the predictions obtained in other relativistic
quark models. In comparison with the previous calculations, we have extended the range of Q(2)
up to 4.5 GeV2 to cover the kinematic interval of the forthcoming experimental data. Using
approach based on the hypothesis of partially conserved axial-vector current, we checked the
relative sign between quark model predictions for the N and P-11(1440) contributions to the pi
electroproduction found in previous investigations.
ISSN: 0556-2813
DOI: 10.1103/PhysRevC.76.025212
Record 238 of 499
Author(s): Aktas, A (Aktas, A.); Andreev, V (Andreev, V.); Anthonis, T (Anthonis, T.);
(Astvatsatourov, A.); Babaev, A (Babaev, A.); Backovic, S (Backovic, S.); Baghdasaryan, A
Chekelian, V (Chekelian, V.); Contreras, JG (Contreras, J. G.); Coughlan, JA (Coughlan, J. A.);
Cox, BE (Cox, B. E.); Cozzika, G (Cozzika, G.); Cvach, J (Cvach, J.); Dainton, JB (Dainton, J.
B.); Daum, K (Daum, K.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.); Del Degan, M
(Del Degan, M.); De Roeck, A (De Roeck, A.); De Wolf, EA (De Wolf, E. A.); Diaconu, C
(Diaconu, C.); Dodonov, V (Dodonov, V.); Dubak, A (Dubak, A.); Eckerlin, G (Eckerlin, G.);
Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eichler, R (Eichler, R.); Eisele, F (Eisele, F.);
Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov, S.); Falkewicz, A
(Falkewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A
(Finke, L.); Fleischer, M (Fleischer, M.); Flucke, G (Flucke, G.); Fomenko, A (Fomenko, A.);
Franke, G (Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E (Gabathuler, E.); Garutti, E
(Garutti, E.); Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Ginzburgskaya, S
M (Gregori, M.); Grell, BR (Grell, B. R.); Grindhammer, G (Grindhammer, G.); Gwilliam, C
(Gwilliam, C.); Habib, S (Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.);
Heinzelmann, G (Heinzelmann, G.); Helebrant, C (Helebrant, C.); Henderson, RCW
(Henderson, R. C. W.); Henschel, H (Henschel, H.); Herrera, G (Herrera, G.); Hildebrandt, M
(Hildebrandt, M.); Hiller, KH (Hiller, K. H.); Hoffmann, D (Hoffmann, D.); Horisberger, R
(Horisberger, R.); Hovhannisyan, A (Hovhannisyan, A.); Hreus, T (Hreus, T.); Hussain, S
(Hussain, S.); Ibbotson, M (Ibbotson, M.); Jacquet, M (Jacquet, M.); Janssen, X (Janssen, X.);
C.); Klimkovich, T (Klimkovich, T.); Kluge, T (Kluge, T.); Knies, G (Knies, G.); Knutsson, A
(Knutsson, A.); Korbel, V (Korbel, V.); Kostka, P (Kostka, P.); Kraemer, M (Kraemer, M.);
A.); Kruger, K (Krueger, K.); Landon, MPJ (Landon, M. P. J.); Lange, W (Lange, W.);
Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock, P.); Lebedev, A (Lebedev,
A.); Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann, V.); Levonian, S (Levonian,
S.); Lindfeld, L (Lindfeld, L.); Lipka, K (Lipka, K.); Liptaj, A (Liptaj, A.); List, B (List, B.);
Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (Lucaci-Timoce, A.-I.); Lueders, H (Lueders,
H.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine, A.); Malinovski, E (Malinovski, E.);
Marage, P (Marage, P.); Marshall, R (Marshall, R.); Marti, L (Marti, L.); Martisikova, M
(Martisikova, M.); Martyn, HU (Martyn, H.-U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A
(Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, J
(Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I (MilcewiczMika, I.); Mladenov, D (Mladenov, D.); Mohamed, A (Mohamed, A.); Moreau, F (Moreau, F.);
Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.);
(Panagoulias, I.); Pandurovic, M (Pandurovic, M.); Papadopoulou, T (Papadopoulou, T.);
Pascaud, C (Pascaud, C.); Patel, GD (Patel, G. D.); Peng, H (Peng, H.); Perez, E (Perez, E.);
Perez-Astudillo, D (Perez-Astudillo, D.); Perieanu, A (Perieanu, A.); Petrukhin, A (Petrukhin,
A.); Picuric, I (Picuric, I.); Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.);
Povh, B (Povh, B.); Prideaux, P (Prideaux, P.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N
(Raicevic, N.); Reimer, P (Reimer, P.); Rimmer, A (Rimmer, A.); Risler, C (Risler, C.); Rizvi, E
(Rizvi, E.); Robmann, P (Robmann, P.); Roland, B (Roland, B.); Roosen, R (Roosen, R.);
Rostovtsev, A (Rostovtsev, A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salvaire,
F (Salvaire, F.); Sankey, DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan,
E.); Schmidt, S (Schmidt, S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoeffel, L
(Schoeffel, L.); Schoning, A (Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H.-C.);
Shtarkov, LN (Shtarkov, L. N.); Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P
Specka, A (Specka, A.); Steder, M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.);
Stoilov, A (Stoilov, A.); Straumann, U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T
(Thompson, P. D.); Toll, T (Toll, T.); Tomasz, F (Tomasz, F.); Traynor, D (Traynor, D.); Trinh,
TN (Trinh, T. N.); Truol, P (Truoel, P.); Tsakov, I (Tsakov, I.); Tsipolitis, G (Tsipolitis, G.);
Tsurin, I (Tsurin, I.); Turnau, J (Turnau, J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K
(Urban, K.); Urban, M (Urban, M.); Usik, A (Usik, A.); Utkin, D (Utkin, D.); Valkarova, A
(Volchinski, V.); Wacker, K (Wacker, K.); Weber, G (Weber, G.); Weber, R (Weber, R.);
(Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S (Xella, S.); Yan, W (Yan,
W.); Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J (Zalesak, J.); Zhang, Z (Zhang,
Z.); Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu, YC (Zhu, Y. C.); Zimmermann, J
(Zimmermann, J.); Zimmermann, T (Zimmermann, T.); Zohrabyan, H (Zohrabyan, H.); Zomer,
F (Zomer, F.)
Title: Diffractive open charm production in deep-inelastic scattering and photoproduction at
HERA
Source: EUROPEAN PHYSICAL JOURNAL C, 50 (1): 1-20 MAR 2007
Abstract: Measurements are presented of diffractive open charm production at HERA. The
event topology is given by ep -> eXY where the system X contains at least one charmed hadron
and is well separated by a large rapidity gap from a leading low-mass proton remnant system Y.
Two analysis techniques are used for the cross section measurements. In the first, the charm
quark is tagged by the reconstruction of a D*(+/-)(2010) meson. This technique is used in deepinelastic scattering (DIS) and photoproduction (gamma p). In the second, a method based on the
displacement of tracks from the primary vertex is used to measure the open charm contribution
to the inclusive diffractive cross section in DIS. The measurements are compared with next-toleading order QCD predictions based on diffractive parton density functions previously obtained
from a QCD analysis of the inclusive diffractive cross section at H1. A good agreement is
observed in the full kinematic regime, which supports the validity of QCD factorization for open
charm production in diffractive DIS and gamma p.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-006-0206-2
Record 239 of 499
Angelis, A.); Delgado, C (Delgado, C.); Reyes, RDL (Reyes, R. De Los); De Lotto, B (De Lotto,
M.); Prandini, E (Prandini, E.); Puchades, N (Puchades, N.); Raymers, A (Raymers, A.); Rhode,
A.); Rugamer, S (Ruegamer, S.); Saggion, A (Saggion, A.); Sanchez, A (Sanchez, A.); Sartori, P
SN (Shore, S. N.); Sidro, N (Sidro, N.); Sillanpaa, A (Sillanpaeae, A.); Sobczynska, D
W.); Zandanel, F (Zandanel, F.); Zanin, R (Zanin, R.); Zapatero, J (Zapatero, J.)
Title: Discovery of very high energy gamma-ray emission from the low-frequency-peaked Bl
Lacertae object Bl Lacertae
Source: ASTROPHYSICAL JOURNAL, 666 (1): L17-L20 Part 2 SEP 1 2007
Abstract: The MAGIC collaboration observed BL Lacertae for 22.2 hr during 2005 August to
December and for 26 hr during 2006 July to September. The source is the historical prototype
and eponym of a class of low-frequency-peaked BL Lacertae (LBL) objects. A very high energy
(VHE) gamma-ray signal was discovered with a 5.1 sigma excess in the 2005 data. Above 200
GeV, an integral flux of (0.6 +/- 0.2) x 10(-11) cm(-2) S-1 was measured, corresponding to
approximately 3% of the Crab flux. The differential spectrum between 150 and 900 GeV is
rather steep with a photon index of -3.6 +/- 0.5. The light curve shows no significant variability
during the observations in 2005. For the first time a clear detection of VHE gamma-ray emission
from an LBL object was obtained with a signal below previous upper limits. The 2006 data show
no significant excess. This drop in flux follows the observed trend in optical activity.
ISSN: 0004-637X
Record 240 of 499
Author(s): Iodice, M (Iodice, M.); Cusanno, F (Cusanno, F.); Acha, A (Acha, A.);
Ambrozewicz, P (Ambrozewicz, P.); Aniol, KA (Aniol, K. A.); Baturin, P (Baturin, P.); Bertin,
PY (Bertin, P. Y.); Benaoum, H (Benaoum, H.); Blomqvist, KI (Blomqvist, K. I.); Boeglin, WU
(Boeglin, W. U.); Breuer, H (Breuer, H.); Brindza, P (Brindza, P.); Bydzovsky, P (Bydzovsky,
P.); Camsonne, A (Camsonne, A.); Chang, CC (Chang, C. C.); Chen, JP (Chen, J.-P.); Choi, S
(Choi, Seonho); Chudakov, EA (Chudakov, E. A.); Cisbani, E (Cisbani, E.); Colilli, S (Colilli,
S.); Coman, L (Coman, L.); Craver, BJ (Craver, B. J.); De Cataldo, G (De Cataldo, G.); de Jager,
CW (de Jager, C. W.); De Leo, R (De Leo, R.); Deur, AP (Deur, A. P.); Ferdi, C (Ferdi, C.);
Feuerbach, RJ (Feuerbach, R. J.); Folts, E (Folts, E.); Fratoni, R (Fratoni, R.); Frullani, S
(Frullani, S.); Garibaldi, F (Garibaldi, F.); Gayou, O (Gayou, O.); Giulani, F (Giulani, F.);
Gomez, J (Gomez, J.); Gricia, M (Gricia, M.); Hansen, JO (Hansen, J. O.); Hayes, D (Hayes,
D.); Higinbotham, DW (Higinbotham, D. W.); Holmstrom, TK (Holmstrom, T. K.); Hyde, CE
(Hyde, C. E.); Ibrahim, HF (Ibrahim, H. F.); Jiang, X (Jiang, X.); Kaufman, LJ (Kaufman, L. J.);
Kino, K (Kino, K.); Kross, B (Kross, B.); Lagamba, L (Lagamba, L.); LeRose, JJ (LeRose, J. J.);
Lindgren, RA (Lindgren, R. A.); Lucentini, M (Lucentini, M.); Margaziotis, DJ (Margaziotis, D.
J.); Markowitz, P (Markowitz, P.); Marrone, S (Marrone, S.); Meziani, ZE (Meziani, Z. E.);
McCormick, K (McCormick, K.); Michaels, RW (Michaels, R. W.); Millener, DJ (Millener, D.
J.); Miyoshi, T (Miyoshi, T.); Moffit, B (Moffit, B.); Monaghan, PA (Monaghan, P. A.);
Moteabbed, M (Moteabbed, M.); Camacho, CMO (Camacho, C. Munoz); Nanda, S (Nanda, S.);
Nappi, E (Nappi, E.); Nelyubin, VV (Nelyubin, V. V.); Norum, BE (Norum, B. E.); Okasyasu, Y
(Okasyasu, Y.); Paschke, KD (Paschke, K. D.); Perdrisat, CF (Perdrisat, C. F.); Piasetzky, E
(Piasetzky, E.); Punjabi, VA (Punjabi, V. A.); Qiang, Y (Qiang, Y.); Raue, B (Raue, B.); Reimer,
PE (Reimer, P. E.); Reinhold, J (Reinhold, J.); Reitz, B (Reitz, B.); Roche, RE (Roche, R. E.);
Rodriguez, VM (Rodriguez, V. M.); Saha, A (Saha, A.); Santavenere, F (Santavenere, F.); Sarty,
AJ (Sarty, A. J.); Segal, J (Segal, J.); Shahinyan, A (Shahinyan, A.); Singh, J (Singh, J.); Sirca, S
(Sirca, S.); Snyder, R (Snyder, R.); Solvignon, PH (Solvignon, P. H.); Sotona, M (Sotona, M.);
Subedi, R (Subedi, R.); Sulkosky, VA (Sulkosky, V. A.); Suzuki, T (Suzuki, T.); Ueno, H (Ueno,
H.); Ulmer, PE (Ulmer, P. E.); Urciuoli, GM (Urciuoli, G. M.); Veneroni, P (Veneroni, P.);
Voutier, E (Voutier, E.); Wojtsekhowski, BB (Wojtsekhowski, B. B.); Ye, Y (Ye, Y.); Zheng, X
(Zheng, X.); Zhou, S (Zhou, S.); Zorn, C (Zorn, C.)
Title: High resolution spectroscopy of B-12(Lambda) by electroproduction
Abstract: An experiment measuring electroproduction of hypernuclei has been performed in hall
A at Jefferson Lab on a C-12 target. In order to increase counting rates and provide unambiguous
kaon identification two superconducting septum magnets and a ring imaging Cherenkov detector
were added to the hall A standard equipment. An unprecedented energy resolution of less than
700 keV FWHM has been achieved. Thus, the observed B-12(Lambda) spectrum shows for the
first time identifiable strength in the core-excited region between the ground-state s-wave
Lambda peak and the 11 MeV p-wave Lambda peak.
ISSN: 0031-9007
Record 241 of 499
Author(s): Arutyunyan, VV (Arutyunyan, V. V.); Izmailyan, NS (Izmailyan, N. Sh.);
Oganesyan, KB (Oganesyan, K. B.); Petrosyan, KG (Petrosyan, K. G.); Hu, CK (Hu, C. K.)
Title: Laser cooling of electrons and X-ray generation in a relativistic quantum heat engine
Source: LASER PHYSICS, 17 (8): 1073-1076 AUG 2007
Abstract: We consider a relativistic quantum heat engine that goes through a thermodynamical
cycle consisting of stages involving laser-assisted cooling of electrons and the generation of X-
ray radiation. Quantum treatment of the processes makes it possible to obtain the necessary
condition and the amount of work extracted from the interaction ingredients, as well as the
efficiency of the heat engine. We have also found that the efficiency of the relativistic engine is
less than the one for the nonrelativistic case for the same momenta. The obtained results set the
limits to the cooling, as well as the intensity of X-ray radiation, in the quantum regime of the
interaction of electrons with laser fields.
ISSN: 1054-660X
DOI: 10.1134/S1054660X07080099
Record 242 of 499
Author(s): Petrosyan, ML (Petrosyan, M. L.); Gabrielyan, LA (Gabrielyan, L. A.); Nazaryan,
YR (Nazaryan, Yu. R.); Tovmasyan, GK (Tovmasyan, G. Kh.); Oganesyan, KB (Oganesyan, K.
B.)
Title: FEL undulator with permanent ferromagnetic magnets
Abstract: A terahertz FEL ferromagnetic undulator has been created. The length of the
undulator period is 9 cm with the number of the periods at 27. By means of the selection and
redistribution of magnetic elements, the spread of the amplitudes of the magnetic field was
reduced to 7%. Additional windings of the magnetic elements were used to compensate for
residual spread. The required focusing gradient of the magnetic field was obtained as a result of
the relative displacement of alternating poles with an opposite charge of the magnetic field along
the x axis. Parameters of undulator, including the focusing properties in the horizontal plane,
were investigated.
ISSN: 1054-660X
DOI: 10.1134/S1054660X07080105
Record 243 of 499
Author(s): Sarkisyan, EM (Sarkisyan, E. M.); Gevorkian, ZS (Gevorkian, Zh. S.); Oganesyan,
KB (Oganesyan, K. B.); Harutyunyan, VV (Harutyunyan, V. V.); Saakyan, VA (Saakyan, V.
A.); Gevorgyan, SG (Gevorgyan, S. G.); Verhoeven, J (Verhoeven, J.); Fedorov, MV (Fedorov,
M. V.); Artemiev, AI (Artemiev, A. I.); Fedorov, SM (Fedorov, S. M.)
Title: Resonant diffusive radiation in random multilayered systems
Abstract: We have theoretically shown that the yield of diffuse radiation generated by
relativistic electrons passing random multilayered systems can be increased when a resonant
condition is met. The resonant condition can be satisfied for the wavelength region representing
visible light as well as soft X rays. The intensity of diffusive soft X rays for specific multilayered
systems consisting of two components is compared with the intensity of Cherenkov radiation.
For radiation at a photon energy of 99.4 eV, the intensity of resonant diffusive radiation (RDR)
generated by 5-MeV electrons passing a Be/Si multilayer exceeds the intensity of Cherenkov
radiation by a factor of approximate to 60 for electrons with the same energy passing a Si foil.
For a photon energy of 453 eV and 13 MeV, electrons passing a Be/Ti multilayer generate RDR
exceeding the Cherenkov radiation generated by electrons passing Ti foils by a factor
approximate to 130.
ISSN: 1054-660X
DOI: 10.1134/S1054660X07080117
Record 244 of 499
Author(s): Lorikyan, MP (Lorikyan, M. P.); Gary, CK (Gary, C. K.)
Title: Phenomenon of spontaneous loss of polarization in some porous dielectrics
Source: JOURNAL OF PHYSICS-CONDENSED MATTER, 19 (27): Art. No. 276212 JUL 11
2007
Abstract: Recently we have observed that porous CsI prepared by thermal evaporation
spontaneously loses its polarization faculty with the elapse of time. In this paper the phenomenon
of spontaneous polarization faculty loss (SPFL) of porous CsBr is investigated and compared
with that for porous CsI under the same experimental conditions. It is assumed that the SPFL
phenomenon can be explained by structural modification of these porous materials after
evaporation as well as by the decrease of their forbidden zone-analogously to crystallization of
Ge amorphous thin films prepared by vapour deposition and carbon nanotubes, respectively.
ISSN: 0953-8984
DOI: 10.1088/0953-8984/19/27/276212
Record 245 of 499
Author(s): Aktas, A (Aktas, A.); Andreev, V (Andreev, V.); Anthonis, T (Anthonis, T.);
(Astvatsatourov, A.); Babaev, A (Babaev, A.); Backovic, S (Backovic, S.); Baghdasaryan, A
(Dainton, J. B.); Daum, K (Daum, K.); de Boer, Y (de Boer, Y.); Delcourt, B (Delcourt, B.); Del
Degan, M (Del Degan, M.); De Roeck, A (De Roeck, A.); De Wolf, EA (De Wolf, E. A.);
Diaconu, C (Diaconu, C.); Dodonov, V (Dodonov, V.); Dubak, A (Dubak, A.); Eckerlin, G
(Eckerlin, G.); Efremenko, V (Efremenko, V.); Egli, S (Egli, S.); Eichler, R (Eichler, R.); Eisele,
F (Eisele, F.); Eliseev, A (Eliseev, A.); Elsen, E (Elsen, E.); Essenov, S (Essenov, S.); Falkewicz,
A (Falkewicz, A.); Faulkner, PJW (Faulkner, P. J. W.); Favart, L (Favart, L.); Fedotov, A
(Finke, L.); Fleischer, M (Fleischer, M.); Flucke, G (Flucke, G.); Fomenko, A (Fomenko, A.);
Franke, G (Franke, G.); Frisson, T (Frisson, T.); Gabathuler, E (Gabathuler, E.); Garutti, E
(Garutti, E.); Gayler, J (Gayler, J.); Ghazaryan, S (Ghazaryan, S.); Ginzburgskaya, S
M (Gregori, M.); Grell, BR (Grell, B. R.); Grindhammer, G (Grindhammer, G.); Habib, S
(Habib, S.); Haidt, D (Haidt, D.); Hansson, M (Hansson, M.); Heinzelmann, G (Heinzelmann,
G.); Helebrant, C (Helebrant, C.); Henderson, RCW (Henderson, R. C. W.); Henschel, H
K. H.); Mann, DH (Mann, D. Ho.); Horisberger, R (Horisberger, R.); Hovhannisyan, A
(Hovhannisyan, A.); Hreus, T (Hreus, T.); Hussain, S (Hussain, S.); Jacquet, M (Jacquet, M.);
Janssen, X (Janssen, X.); Jemanov, V (Jemanov, V.); Jonsson, L (Joensson, L.); Johnson, DP
Knies, G (Knies, G.); Knutsson, A (Knutsson, A.); Korbel, V (Korbel, V.); Kostka, P (Kostka,
Kropivnitskaya, A (Kropivnitskaya, A.); Kruger, K (Krueger, K.); Landon, MPJ (Landon, M. P.
J.); Lange, W (Lange, W.); Lastovicka-Medin, G (Lastovicka-Medin, G.); Laycock, P (Laycock,
P.); Lebedev, A (Lebedev, A.); Leibenguth, G (Leibenguth, G.); Lendermann, V (Lendermann,
V.); Levonian, S (Levonian, S.); Lindfeld, L (Lindfeld, L.); Lipka, K (Lipka, K.); Liptaj, A
(Liptaj, A.); List, B (List, B.); List, J (List, J.); Loktionova, N (Loktionova, N.); LopezFernandez, R (Lopez-Fernandez, R.); Lubimov, V (Lubimov, V.); Lucaci-Timoce, AI (LucaciTimoce, A.-I.); Lueders, H (Lueders, H.); Lytkin, L (Lytkin, L.); Makankine, A (Makankine,
M (Martisikova, M.); Martyn, HU (Martyn, H.-U.); Maxfield, SJ (Maxfield, S. J.); Mehta, A
(Mehta, A.); Meier, K (Meier, K.); Meyer, AB (Meyer, A. B.); Meyer, H (Meyer, H.); Meyer, J
(Meyer, J.); Michels, V (Michels, V.); Mikocki, S (Mikocki, S.); Milcewicz-Mika, I (MilcewiczMika, I.); Mladenov, D (Mladenov, D.); Mohamed, A (Mohamed, A.); Moreau, F (Moreau, F.);
Naumann, T (Naumann, T.); Newman, PR (Newman, P. R.); Niebuhr, C (Niebuhr, C.);
Osman, S (Osman, S.); Papadopoulou, T (Papadopoulou, T.); Palichik, V (Palichik, V.);
Panagoulias, I (Panagoulias, I.); Pandurovic, M (Pandurovic, M.); Pascaud, C (Pascaud, C.);
Patel, GD (Patel, G. D.); Peng, H (Peng, H.); Perez, E (Perez, E.); Perez-Astudillo, D (PerezAstudillo, D.); Perieanu, A (Perieanu, A.); Petrukhin, A (Petrukhin, A.); Picuric, I (Picuric, I.);
Piec, S (Piec, S.); Pitzl, D (Pitzl, D.); Placakyte, R (Placakyte, R.); Povh, B (Povh, B.); Prideaux,
P (Prideaux, P.); Rahmat, AJ (Rahmat, A. J.); Raicevic, N (Raicevic, N.); Reimer, P (Reimer,
P.); Rimmer, A (Rimmer, A.); Risler, C (Risler, C.); Rizvi, E (Rizvi, E.); Robmann, P
A.); Rurikova, Z (Rurikova, Z.); Rusakov, S (Rusakov, S.); Salvaire, F (Salvaire, F.); Sankey,
DPC (Sankey, D. P. C.); Sauter, M (Sauter, M.); Sauvan, E (Sauvan, E.); Schmidt, S (Schmidt,
S.); Schmitt, S (Schmitt, S.); Schmitz, C (Schmitz, C.); Schoe, L (Schoe, L.); Schoning, A
(Schoening, A.); Schultz-Coulon, HC (Schultz-Coulon, H.-C.); Sefkow, F (Sefkow, F.); ShawWest, RN (Shaw-West, R. N.); Sheviakov, I (Sheviakov, I.); Shtarkov, LN (Shtarkov, L. N.);
Sloan, T (Sloan, T.); Smiljanic, I (Smiljanic, I.); Smirnov, P (Smirnov, P.); Soloviev, Y
(Soloviev, Y.); South, D (South, D.); Spaskov, V (Spaskov, V.); Specka, A (Specka, A.); Steder,
M (Steder, M.); Stella, B (Stella, B.); Stiewe, J (Stiewe, J.); Stoilov, A (Stoilov, A.); Straumann,
U (Straumann, U.); Sunar, D (Sunar, D.); Sykora, T (Sykora, T.); Tchoulakov, V (Tchoulakov,
V.); Thompson, G (Thompson, G.); Thompson, PD (Thompson, P. D.); Toll, T (Toll, T.);
Tomasz, F (Tomasz, F.); Traynor, D (Traynor, D.); Trinh, TN (Trinh, T. N.); Truol, P (Truoel,
P.); Tsakov, I (Tsakov, I.); Tsipolitis, G (Tsipolitis, G.); Tsurin, I (Tsurin, I.); Turnau, J (Turnau,
J.); Tzamariudaki, E (Tzamariudaki, E.); Urban, K (Urban, K.); Usik, A (Usik, A.); Utkin, D
(Utkin, D.); Valkarova, A (Valkarova, A.); Vallee, C (Vallee, C.); Van Mechelen, P (Van
Mechelen, P.); Trevino, AV (Trevino, A. Vargas); Vazdik, Y (Vazdik, Y.); Vinokurova, S
(Vinokurova, S.); Volchinski, V (Volchinski, V.); Wacker, K (Wacker, K.); Weber, G (Weber,
G.); Weber, R (Weber, R.); Wegener, D (Wegener, D.); Werner, C (Werner, C.); Wessels, M
(Wessels, M.); Wissing, C (Wissing, C.); Wolf, R (Wolf, R.); Wunsch, E (Wuensch, E.); Xella, S
(Xella, S.); Yan, W (Yan, W.); Yeganov, V (Yeganov, V.); Zacek, J (Zacek, J.); Zalesak, J
(Zalesak, J.); Zhang, Z (Zhang, Z.); Zhelezov, A (Zhelezov, A.); Zhokin, A (Zhokin, A.); Zhu,
YC (Zhu, Y. C.); Zimmermann, J (Zimmermann, J.); Zimmermann, T (Zimmermann, T.);
Zohrabyan, H (Zohrabyan, H.); Zomer, F (Zomer, F.)
Title: Inclusive D*(+/-) meson and associated dijet production in deep-inelastic scattering at
HERA
Source: EUROPEAN PHYSICAL JOURNAL C, 51 (2): 271-287 JUL 2007
Abstract: Inclusive D*(+/-) production is measured in deep-inelastic ep scattering at HERA
with the H1 detector. In addition, the production of dijets in events with a D*(+/-) meson is
investigated. The analysis covers values of photon virtuality 2 <= Q(2) <= 100 GeV2 and of
inelasticity 0.05 <= y <= 0.7. Differential cross sections are measured as a function of Q(2) and x
and of various D*(+/-) meson and jet observables. Within the experimental and theoretical
uncertainties all measured cross sections are found to be adequately described by next-to-leading
order (NLO) QCD calculations, based on the photon - gluon fusion process and DGLAP
evolution, without the need for an additional resolved component of the photon beyond what is
included at NLO. A reasonable description of the data is also achieved by a prediction based on
the CCFM evolution of partons involving the kT- unintegrated gluon distribution of the proton.
ISSN: 1434-6044
DOI: 10.1140/epjc/s10052-007-0296-5
Record 246 of 499
Author(s): Aharonian, F (Aharonian, F.); Akhperjanian, AG (Akhperjanian, A. G.); BazerBachi, AR (Bazer-Bachi, A. R.); Beilicke, M (Beilicke, M.); Benbow, W (Benbow, W.); Berge,
D (Berge, D.); Bernlohr, K (Bernloehr, K.); Boisson, C (Boisson, C.); Bolz, O (Bolz, O.); Borrel,
V (Borrel, V.); Braun, I (Braun, I.); Brion, E (Brion, E.); Brown, AM (Brown, A. M.); Buler, R
(Buehler, R.); Busching, I (Buesching, I.); Boutelier, T (Boutelier, T.); Carrigan, S (Carrigan,
S.); Chadwick, PM (Chadwick, P. M.); Chounet, LM (Chounet, L.-M.); Coignet, G (Coignet,
G.); Cornils, R (Cornils, R.); Costamante, L (Costamante, L.); Degrange, B (Degrange, B.);
Dickinson, HJ (Dickinson, H. J.); Djannati-Atai, A (Djannati-Ataie, A.); Drury, LO (Drury, L.
O'C.); Dubus, G (Dubus, G.); Egberts, K (Egberts, K.); Emmanoulopoulos, D
(Feinstein, F.); Ferrero, E (Ferrero, E.); Fiasson, A (Fiasson, A.); Fontaine, G (Fontaine, G.);
Funk, S (Funk, Seb.); Funk, S (Funk, S.); Fussling, M (Fuessling, M.); Gallant, YA (Gallant, Y.
A.); Giebels, B (Giebels, B.); Glicenstein, JF (Glicenstein, J. F.); Gluck, B (Glueck, B.); Goret, P
(Jacholkowska, A.); de Jager, OC (de Jager, O. C.); Kendziorra, E (Kendziorra, E.);
Kerschhaggl, M (Kerschhaggl, M.); Khelifi, B (Khelifi, B.); Komin, N (Komin, Nu.); Kosack, K
(Kosack, K.); Lamanna, G (Lamanna, G.); Latham, IJ (Latham, I. J.); Le Gallou, R (Le Gallou,
R.); Lemiere, A (Lemiere, A.); Lemoine-Goumard, M (Lemoine-Goumard, M.); Lohse, T
(Lohse, T.); Martin, JM (Martin, J. M.); Martineau-Huynh, O (Martineau-Huynh, O.);
Marcowith, A (Marcowith, A.); Masterson, C (Masterson, C.); Maurin, G (Maurin, G.);
McComb, TJL (McComb, T. J. L.); Moulin, E (Moulin, E.); de Naurois, M (de Naurois, M.);
Nedbal, D (Nedbal, D.); Nolan, SJ (Nolan, S. J.); Noutsos, A (Noutsos, A.); Olive, JP (Olive, J.P.); Orford, KJ (Orford, K. J.); Osborne, JL (Osborne, J. L.); Panter, M (Panter, M.); Pelletier, G
(Pelletier, G.); Petrucci, PO (Petrucci, P.-O.); Pita, S (Pita, S.); Puehlhofer, G (Puehlhofer, G.);
Raue, M (Raue, M.); Rayner, SM (Rayner, S. M.); Ripken, J (Ripken, J.); Rob, L (Rob, L.);
Rolland, L (Rolland, L.); Rosier-Lees, S (Rosier-Lees, S.); Rowell, G (Rowell, G.); Sahakian, V
(Sahakian, V.); Santangelo, A (Santangelo, A.); Sauge, L (Sauge, L.); Schlenker, S (Schlenker,
S.); Schlickeiser, R (Schlickeiser, R.); Schroder, R (Schroeder, R.); Schwanke, U (Schwanke,
U.); Schwarzburg, S (Schwarzburg, S.); Schwemmer, S (Schwemmer, S.); Shalchi, A (Shalchi,
A.); Sol, H (Sol, H.); Spangler, D (Spangler, D.); Spanier, F (Spanier, F.); Steenkamp, R
(Steenkamp, R.); Stegmann, C (Stegmann, C.); Superina, G (Superina, G.); Tam, PH (Tam, P.
H.); Tavernet, JP (Tavernet, J.-P.); Terrier, R (Terrier, R.); Tluczykont, M (Tluczykont, M.); van
Eldik, C (van Eldik, C.); Vasileiadis, G (Vasileiadis, G.); Venter, C (Venter, C.); Vialle, JP
(Vialle, J. P.); Vincent, P (Vincent, P.); Volk, HJ (Voelk, H. J.); Wagner, SJ (Wagner, S. J.);
Ward, M (Ward, M.)
Title: Detection of VHE gamma-ray emission from the distant blazar 1ES 1101-232 with HESS
and broadband characterisation
Abstract: Context. The blazar 1ES 1101-232 was observed with the High Energy Stereoscopic
System (HESS) of Atmospheric Cherenkov Telescopes ( ACT) in 2004 and 2005, for a live time
of 43 h. VHE ( E > 1011 eV)gamma-rays were detected for the first time from this object.
Aims. VHE observations of blazars are used to investigate the inner parts of the blazar jets, and
also to study the extragalactic background light (EBL) in the near-infrared band.
Methods. Observations in 2005 were conducted in a multiwavelength campaign, together with
the RXTE satellite and optical observations. In 2004, simultaneous observations with XMMNewton were obtained.
Results. 1ES 1101-232 was detected with HESS with an excess of 649 photons, at a significance
of 10 sigma. The measured VHE-ray flux amounts to dN/dE = (5.63 +/- 0.89) x 10(13)(E/TeV)(-(2.94 +/- 0.20)) cm(-2) s(-1) TeV-1, above a spectral energy threshold of 225 GeV.
No significant variation of the VHE.-ray flux on any time scale was found. 1ES 1101-232
exhibits a very hard spectrum, and at a redshift of z = 0.186, is the blazar with the highest
confirmed redshift detected in VHE gamma rays so far.
Conclusions. The data allow the construction of truly simultaneous spectral energy distributions
of the source, from the optical to the VHE band. Using an EBL model with vF(v) = 14 nWm(-2)
sr(-1) at 1.5 mu m as presented in Aharonian et al. (2006a) suggests an intrinsic VHE power
output peak of the source at above 3 TeV.
ISSN: 0004-6361
DOI: 10.1051/0004-6361:20077057
Record 247 of 499
Author(s): Arakelyan, GH (Arakelyan, G. H.); Merino, C (Merino, C.); Shabelski, YM
(Shabelski, Yu. M.)
Title: Quark-gluon string-model description of Baryon production in (KN)-N-+/- interactions
Source: PHYSICS OF ATOMIC NUCLEI, 70 (6): 1110-1118 JUN 2007
Abstract: The process of baryon production in Kp collisions at high energies is considered in the
framework of the quark-gluon string model. The contribution of the string-junction mechanism
to the strange-baryon production is analyzed. The results of numerical calculations are in
reasonable agreement with the data on inclusive spectra of p, Lambda, (Lambda) over bar and on
the (Lambda) over bar/Lambda asymmetry. The predictions for inclusive spectra and production
asymmetry of Xi and Omega baryons are presented.
ISSN: 1063-7788
DOI: 10.1134/S1063778807060142
Record 248 of 499
Author(s): Mardoyan, L (Mardoyan, Levon); Nersessian, A (Nersessian, Armen); Yeranyan, A
(Yeranyan, Armen)
Title: Relationship between quantum-mechanical systems with and without monopoles
Source: PHYSICS LETTERS A, 366 (1-2): 30-35 JUN 18 2007
Abstract: it is shown that the inclusion of the monopole field in the three- and five-dimensional
spherically symmetric quantum-mechanical systems, with the addition of the special centrifugal
term, leads to the lift of the range of the total and azimuth quantum numbers only. Meanwhile
the functional dependence of the energy spectra on quantum numbers does not undergo any
changes. We also present a new integrable model of the spherical oscillator. (c) 2007 Elsevier
ISSN: 0375-9601
DOI: 10.1016/j.physleta.2007.01.049
Record 249 of 499
Author(s): Saakian, DB (Saakian, David B.)
Title: A new method for the solution of models of biological evolution: Derivation of exact
steady-state distributions
Source: JOURNAL OF STATISTICAL PHYSICS, 128 (3): 781-798 AUG 2007
Abstract: We investigate well-known models of biological evolution and address the open
problem of how construct a correct continuous analog of mutations in discrete sequence space.
We deal with models where the fitness is a function of a Hamming distance from the reference
sequence. The mutation-selection master equation in the discrete sequence space is replaced by a
Hamilton-Jacobi equation for the logarithm of relative frequencies of different sequences. The
steady-state distribution, mean fitness and the variance of fitness are derived. All our results are
asymptotic in the large genome limit. A variety of important biological and biochemical models
can be solved by this new approach.
ISSN: 0022-4715
DOI: 10.1007/s10955-007-9334-9
Record 250 of 499
Author(s): Hakobyan, T (Hakobyan, Tigran)
Title: Energy-level ordering and ground-state quantum numbers for a frustrated two-leg spin-1/2
ladder
Source: PHYSICAL REVIEW B, 75 (21): Art. No. 214421 JUN 2007
Abstract: The Lieb-Mattis theorem about antiferromagnetic ordering of energy levels on
bipartite

2009-2005jan - Yerevan Physics Institute

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