Gyulassy
1CIPANP’03
Session 3 (Wednesday May 21, 1:40 - 3:20 pm):Probes of Dense Gluonic Matter (part II)
Jet Quenching and Energy Loss - Miklos Gyulassy
CIPANP Relativistic Heavy Ion (RHI) Parallel Session
Gyulassy
2CIPANP’03
G.Baym,QM02
The QGP Paradigm
Proc. Quark Matter 1981-2002
Gyulassy
3CIPANP’03
Ln 1/x
cx (y,A)
The CGC Paradigm
Iancu, Venugopalan hep-ph/0303204
Gyulassy
4CIPANP’03
Systematic Errors not shown
Phobos Preliminary
pT Distribution of Charged Particles
G.Roland
How can we use this tiny pQCD tail to wag the QGP Bulk?
Bulk
Tail
Gyulassy
5CIPANP’03
Au-Au nucl-ex/0304022
The high pT window at RHIC is now wide open
p+p-> hep-ex/0304038 STAR PRL 89, 202301
nucl-ex/0305015
Gyulassy
6CIPANP’03
Jet Tomography of QCD Matter
Single Hadron Tomography
g
g
jet
g
TT
Di-Hadron Tomography
g
gX X
XL1
L2
g
T2J et T
pGLV L
3s n d r( )C CE ,
g
21 dNR dypL( )f
Ivan Vitev, Peter Levai, Xin-Nian Wang, MGReviewed in nucl-th/0302077
Gyulassy
7CIPANP’03
pp
AuAubinaryAuAuAA Yield
NYieldR
/
2/pp
AuAupartAuAupartAA Yield
NYieldR
/
Final submitted to PRL
RAA: High pT Suppression Au-Au 200 GeV:s
Au-Au nucl-ex/0304022
Au-Au nucl-ex/0304022
M. G. Perdekamp, RHIC/AGS May 15,2003
Gyulassy
8CIPANP’03
( )kT
shadAB a/A b c c/B b /adN P DEf d )f (
D®p ® p= Ä Ä ÄDs Ä
I.Vitev et alpQCD tomography
GRVEKSBKKGLV
Gyulassy
9CIPANP’03
Single Hadron Tomography from SPS, RHIC, LHC
1. Cronin dominates at SPS
2. Cronin+Quench+Shadow conspire to give ~ flat R~Npart/Nbin at RHIC dNg/dy ~ 1000 -> g ~100 0
3. Predicts sub Npart quench, positive pT slope of R at LHC and RLHC(40)~RRHIC(40)
Ivan Vitev and MG, Phys.Rev.Lett. 89 (2002)
Gyulassy
10CIPANP’03
Mono Jets from STAR at RHIC(STAR, PRL 90, 082302(2002))
Di-Jets from p + p at 200 GeVDi-Jets from p + p at 200 GeV ‘‘Mono-Jets’ from Au + Au at 200 GeVMono-Jets’ from Au + Au at 200 GeV
STAR, AGS Users Meeting May 15, 2003
● Au+Au p + p
Gyulassy
11CIPANP’03
Suppression and correlationSTAR: 200 GeV Au+Au / p+p
Hadron suppression and disappearance of back-to-back ‘jet’ are correlated!STAR PRL 90, 082302
● Au+Au p + p
STAR Preliminary
STAR, AGS Users Meeting May 15, 2003
Gyulassy
12CIPANP’03
Centrality Dependence of Quenching PHENIX AuAu 200: nucl-ex/0304022
g 2/3GLV part2d r( )
dNRE , NR dy
ConsistentWith GLVFormalism
Gyulassy
13CIPANP’03
So What Do the new d+Au data say?
Which paradigm is closer to reality inThe RHIC x>0.01 domain?
Gyulassy
14CIPANP’03
Jet Quenching
XN Wang, MG
Gluon Shadow
BRAHMSPRL88(02)
Soft Lund strings
Mini-jets
Cronin?
Need pA (or dA) to eliminate jet quenching
Gyulassy
15CIPANP’03
Unquenched Predictions for for d+Au
X.N.Wang, nucl-th/0303004
A.Accardi et al.
pQCD partonic level Glauber-Gribov
P.Levai et al.
XNWang, PRC61(00)064910
Gyulassy
16CIPANP’03
Our NULL Quenching Prediction for dA for x>0.01 is confirmed ! AA quench must be final state interactions
PHENIX Preliminary
1 errors
PHOBOS Preliminary
STAR Preliminary
Gyulassy-16CIPANP 5/21/03
Gyulassy
17CIPANP’03
The NULL Quenching Prediction for dA (for x>0.01) is confirmed !
PHOBOS Preliminary
STAR Preliminary
CIPANP 5/21/03
D+Au Preliminary
Au+Au Final
AA quench must be due to final state interactions: Jet Quenching
Gyulassy
18CIPANP’03
0 RAA Predictions vs Experiment for central Au+Au and d+Au collisions
d+Au: I. Vitev, nucl-th/0302002 and private communication. Au+Au: I. Vitev and M. Gyulassy, Phys.Rev.Lett.89:252301,2002; hep-ph/0208108; M. Gyulassy, P. Levai and I. Vitev, Nucl. Phys. B 594, p. 371 (2001).
PHENIX Preliminary
Run 2002/2003 d-Au 200 GeV: PRELIMINARYs
shadowing
anti-shadowing
Gyulassy
19CIPANP’03
d+Au: two-particle correlations
• no normalization to underlying event
• “central”: top 20% FTPCE multiplicity
• underlying event grows: p+p d+Au minbias d+Au central• near-side: correlation strength and width similar• away-side: d+Au peak broadens but little centrality dependence
Unquenched back-to-back jets are observed in central d+Au!From P. Jacobs for STAR
Check mate!
The NULL dA Quench prediction is seen in fullstrength back-to-backCorrelations as in p+p
Gyulassy
20CIPANP’03
Systematic Errors not shown
Phobos Preliminary
Does the pQCD tail wag the QGP dog?
G.Roland
TailBULK
Yes it does!
Gyulassy
21CIPANP’03
• d+Au was the critical NULL quench control experiment • Au Au RHIC data are now only consistent with
QGP Paradigm!• Jet quenching IS due to final state
interactions in an opaque QGP
• Bulk Elliptic flow pT< 2 GeV saturates hydrodynamic limit for first
time
•V2(pt; h) is consistent with lattice QCD equation of state
Conclusions: After the first 3000 man-years at RHIC
0g Nuke2
1000 30Ræ öt ÷çr r÷ç ÷çè øt p t: :
More good NEWS:
Gyulassy
22CIPANP’03
Collective Flow of Bulk QCD matter?{ }T u u ( (T) P(T)) g P(T) 0mn m n mn
m m¶ =¶ e + - =
Initial spatial anisotropy
Final momentum anisotropy
px
py
x
y
T (x) 0mnm¶ =
P.Kolb et al, D.Teany et al
The most sensitiveBarometric probe of the QCD Equation of State P(T)
Mh dependent v2(pT)
Gyulassy
23CIPANP’03
Experimental To Do List
•Y=+- 3 dAu to test if x=0.001 QGP->CGC ?
•C2(phi1,phi2, pt1,pt2, eta1,eta2, fl1,fl2, Mult, A,B, Ecm)
•Heavy Quark tomography [ Magdalena Djordjevic]
•Open Charm (enhancement?); J/Psi (suppression?)• Charm Flow? [ Sotiria Batsouli ]
•Need Direct Photons thermometer• and tagged direct photon -quark jets!
•Excitation function Ecm~50-100, A=20-100
Gyulassy
24CIPANP’03
Theory To Do List
•HBT source Ecm invariance?• why No time-delay?
•ET/N Ecm invariance, Npart invariance?
•NEW** V2(pT) Ecm invariance !?• source of Flat High pt saturation
•V2(y) NON Bjorken boost invariant
• Baryon transport dynamics
•Thermalization, QGP Transport theory
Gyulassy
25CIPANP’03
Selected References on Jet Quenching
JET QUENCHING AND RADIATIVE ENERGY LOSS IN DENSE NUCLEAR MATTER.By Miklos Gyulassy (Columbia U.), Ivan Vitev (Iowa State U.), Xin-Nian Wang (LBL, Berkeley), Ben-Wei Zhang (Hua-Zhong Normal U.). Feb 2003. 69pp. Published in Quark Gluon Plasma 3, editors: R.C. Hwa and X.N. Wang, World Scientific, Singapore. e-Print Archive: nucl-th/0302077
HIGH P(T) TOMOGRAPHY OF D + AU AND AU+AU AT SPS, RHIC, AND LHC.By Ivan Vitev (Columbia U. & Iowa State U.), Miklos Gyulassy (Columbia U.). Sep 2002. 4pp. Published in Phys.Rev.Lett.89:252301,2002 e-Print Archive: hep-ph/0209161
JET TOMOGRAPHY OF AU+AU REACTIONS INCLUDING MULTIGLUON FLUCTUATIONS. By M. Gyulassy (Columbia U.), P. Levai (Budapest, RMKI), I. Vitev (Columbia U.). Dec 2001. 6pp. Published in Phys.Lett.B538:282-288,2002 e-Print Archive: nucl-th/0112071
HIGH P(T) AZIMUTHAL ASYMMETRY IN NONCENTRAL A+A AT RHIC.By M. Gyulassy (Columbia U. & LBL, Berkeley), I. Vitev (Columbia U.), X.N. Wang (LBL, Berkeley). Dec 2000. 4pp. Published in Phys.Rev.Lett.86:2537-2540,2001 e-Print Archive: nucl-th/0012092 REACTION OPERATOR APPROACH TO NONABELIAN ENERGY LOSS.By M. Gyulassy (Columbia U.), P. Levai (Columbia U. & Budapest, RMKI), I. Vitev (Columbia U.). CU-TP-979, Jun 2000. 39pp. Published in Nucl.Phys.B594:371-419,2001 e-Print Archive: nucl-th/0006010
NONABELIAN ENERGY LOSS AT FINITE OPACITY.By M. Gyulassy (Columbia U.), P. Levai (Columbia U. & Budapest, RMKI), I. Vitev (Columbia U.). CU-TP-976, May 2000. 4pp. Published in Phys.Rev.Lett.85:5535-5538,2000 e-Print Archive: nucl-th/0005032
See also refs therein