Going with the Meandering Flows with Shoji along the AA Way 道

Transcription

Going with the Meandering Flows with Shoji along the AA Way 道
MGyulassy 7/16/14 Shoji70
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Like the Amazon , the AA Way is full of twists turns dead ends and loops
“Life is a series of natural and spontaneous changes.
Don't resist them; that only creates sorrow. Let reality be reality.
Let things flow naturally forward in whatever way they like.” ― Lao Tzu
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Shoji et al 1978, 1981 data showed Intra-nuclear Cascade (Cugnon, MG, Remler, Frankel)
of Hadron Gas preferred over ideal fluid models at Bevalac Elab<1 GeV
Fig.47c
Fig.14
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Shoji's pion excitation function data 0.2-2.0 GeV/A
Also killed my
Hope of pion condensation in A+A
Pion Condensation Models
Fig.28
Fig.4
Ruck, MG, Greiner Z.Phys30 (79)
Migdal (74)
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In 1984 I had a 3 month
Research leave at INS
Tokyo to work with
Date and Sumiyoshi on
Baryon stopping power
In PA and AA
In 1991 we analyzed Shoji's
E802 data and concluded
“none of the present models which
assume complete nuclear stopping
and none of the present
nonequilibrium string models are
consistent with the published E802
spectroineter data for central Si+Au
reactions. “
multicomponent models showed
nuclear stopping lengths of 17—26 fm
were much larger than the
lengths of 8—10 fm
Deduced from earlier p+A data
Later Au+Au 1994 data also confirmed
Lack of complete Landau stopping
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A+A was proposed to study novel forms of matter by Lee-Wick and Greiner et al 1974
Bjorken proposed boost invariant hydro 1982 to replace Landau's 1950 full stopping hydro
RHIC @ BNL proposed in 1982 after the very lucky (for nuclear science) demise of ISABELLE
1983 NSAC Long Range Plan identified RHIC@BNL as top priority construction project
Over LamphII (that has since 1997 been resurrected as J-PARC thanks to Shoji)
T ~ Λ QCD ~ 200 MeV
2000
ρ B ~ (Λ QCD )3 ~10 ρ0
Shoji became 1st spokesman of PHENIX design project in 1991
And used E802 @AGS to created highest baryon density matter
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The RHIC Planning Team at BNL
Shoji was too busy planning detectors and experiments to be in this picture
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Shoji, I, and 1000 others rapidly jumped onto this new ring of Physics
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The task was to map out and compare the physics of the Big and Little Bangs
Slide from T. Hadsuda
Theory of Little AA Bangs is made harder by TOO much data pp , pA, AA @ s ~ 1 -108 AGeV2
that leave TOO little room to speculate and wiggle out of inconsistencies with experiments
MGyulassyof7/16/14
Shoji70is harder because way TOO many local minima of SuperString Landscape 17
Theory
Big Bangs
S.Bass' Cartoon of physics components that must be theoretically controlled
to enable unambiguous interpretation of high energy A+A data
But how do theoretical uncertainties in each step propagate?
Can we de-convolute the data tsunami to isolate and test each step?
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Shoji was instrumental in creating not only world class AA experiments at Bevalac AGS and RHIC
But he also played a critical role with TD Lee, Arima, Samios to
create the Riken-BNL-Research-Center (RBRC) for Theory and Exp
[RBRC Workshop Series 1997-2014]
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Shoji is not here because he accepted a much bigger
challenge in 1997 to lead KEK toward J-PARC that is
now a reality due to his skill and dedication
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I owe my deepest professional thanks to Shoji-sensei who in 1992 as chair of Physics@CU
recruited me to move from LBNL to Columbia University
Arigato gozaimasu Shojisama
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Shoji's scientific offspring @ RHIC (spokespersons W.Zajc and B.Jacak + 500 )
ISMD 2000 Tihany/Hungary
G. David, Brookhaven National Laboratory
Have harvested over 14 years of data and publications with ~20,000 citations
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Bulk Collective Flow of QCD matter
∂
∂
QCD EOS
W. Greiner, H. Stocker(1974)
…
P.Kolb, U. Heinz et al (2000)
D.Teany, E. Shuryak
T. Hirano, Y. Nara
“Elliptic Flow”
dN
 (y,pT ) 1 2 v2 (p T ) cos  2  L
2
dydpT d

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Discovery of “Perfect Fluidity” of sQGP at RHIC in 2005
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2011: the case for perfect fluidity with Color Glass Initial Glasma
Viscocity/entropy
Of perfect fluid QGP
MGyulassy 5/20/14 QM14
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Key control experiment for discovery of perfect fluidity was SPS
v2(Ecm)
CERES
QGP hydrodynamics only worked at RHIC
17 AGeV
17 AGeV
CERES/SPS
dNch /dyd2x^ (fm- 2 )
In 2005 Ecm was the control nob that could turn Perfect Fluidity Off below 200 AGeV
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2011 p+A LHC, D+A RHIC, and Beam Energy Scan posed severe challenges to Perfect Fluidity
A
p
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QM12 p(D) + A & BES surprises: v3(p+Pb) =v3(Pb+Pb) ; v2(D+Au)=v2(Au+Au) ; Ecm independ
D+Au ~ Au+Au
p+Pb
BES vn independent of Ecm
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Latest surprize p+Pb azimuthal harmonic n=1-5 data (ATLAS) shows
similarity to Pb+Pb in all moments even though QGP Vol(pA) ~ Vol(AA)/10 !
J.Jia, B. Cole, et al
We have lost p+A as a Null Control experiment!
Work on why and how is under intense debate and in Progress .
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At Quark Matter May 2014, I asked
Is Perfect Fluidity of the sQGP necessary in light of recent
BES & D+Au & p+Au data from RHIC and LHC ?
Perfect fluidity is certainly sufficient to fit all A+A and even p+A, data !
But is it necessary, i.e., is it a unique property of sQGP or a conspiracy
of multiple effects at least in P+A and low energies that have yet to be
clarified?
Our current work in progress is to evaluate pQCD color bremsstrahlung
interference phenomena from multiple beam jet color antenna arrays
that could possible solve the current BES+DA+pA apparent flow puzzles
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Non-Abelian Bremsstrahlung and Azimuthal Asymmetries in High Energy p+A Reactions
M. Gyulassy, P. Levai, I. Vitev, T. Biro. May 30, 2014. 16 pp.
e-Print: arXiv:1405.7825 [hep-ph]
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[ATLAS Collaboration], PRC86, 014907 (2012)
.
Are observed few GeV dihadron azimuthal correlations due to
pQCD Color Bremsstrahlung or Lumpy CGC hydrodynamic response,
Or AdS/CFT shock waves ?
or a combination of above ?
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GLV, Nucl.Phys. B594 (2001) 371
pQCD Color Bremsstrahlung Correlations
GLVB, arXiv:1405.7825 [hep-ph]
M
+
(
- a
1
c Ta1 )
pQCD Generates nontrivial reaction plane azimuthal correlations
With magnitude and k , q dependence similar to pA and AA
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Classical Color Field Produced by Interfering 3 color beam jets
Produce only n=2,4,6, ...
Produce all n=1, 2, 3, 4, ...
BG= Bertch, Gunion 1984
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Example: Color Scintillating Arrays can easily produce large v2, v3,.. Interferences

TheMagyar
“Hungarian
Bajusz
Mustache”
Interference
Color
Pattern
Interference
Pattern
MG, P. Levai, I. Vitev, and T. Biro
arXiv:1405.7825 [hep-ph]
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Quark Matter 2014 was a turning point for me along the “Way” of
Interpreting AA
1) The Case for Perfect Fluidity and CGC/Glasma Sufficiency
for Flow Harmonics in Non-central A+A as of QM12
2) There is trouble with Necessity of Fluidity since 2012
a) Beam Energy independence
b) p(D)+A = A+A v2 and v3 Beam size independence
c) large rapidity even v1 Dipole in both pA and AA
3) Is Perfect Fluidity really Necessary ??
Could vn in B+A be partly Nonabelian Wave interference?
(see also QM14 talks by Venugopalan , Dusling, Schenke... & poster of Biro, Schram)
My current heretical working hypothesis is Yes: arXiv:1405.7825 [hep-ph]
If true, this will increase eta/s estimates from vn harmonic data
analysis and ratio may converge closer to our 1985 pQCD eta/s~ 1
predictions that is also consistent with recent jet quenching
phenomenology*
MGyulassy 5/20/14 QM14 (*
See JET Collab arXiv:1312.5003 [nucl-th], PRC in press)
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Shoji, Now that you are retired from heavy
management duties , please return to help
us find the true Way of AA
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Going with the Meandering Flows with Shoji along the AA Way 道

Transcription

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