Recontres de Moriond, March 17 2005

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Recontres de Moriond, March 17 2005
High PT Physics at RHIC
Xin-Nian Wang Lawrence Berkeley National
Laboratory
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QCD phase transition
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Lattice QCD results
F. Karsch 2001
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Medium Response Function
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DIS off Nuclei
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Twist Expansion
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LPM interference Effect
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Modified Fragmentation
Guo XNW00
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HERMES data
E. Wang XNW 2000
in Au nuclei
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Parton Energy Loss
Quark energy loss energy carried by radiated
gluon
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High pt spectra in pp collisions
H. Zhang J. Owens E. Wang XNW 2005
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High pt spectra in AuAu
H. Zhang,E. Wang J. Owens, XNW 2005
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Jet Quenching at RHIC
XNW03
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Geometry of dense matter
Azimuthal asymmetry
Non-central collisions
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No suppression in dAu
STAR
PHENIX
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pT spectra at large rapidity
Gluon saturation or color glass condensate ?
Catalin Ristea (BRHAMS)
Edmond Iancu (Theory)
Greg Rakness (STAR)
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Energy Dependence of quenching
D. dEnterria, Hard Probes 2004
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Effect of non-Abelian energy loss
Qun Wang XNW nucl-th/0410079
Fixed pT6 GeV
DEgDEq
DEg2DEq
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Dihadron Correlation
trigger
Df
pTtrig4-6 GeV
pT2-4 GeV
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Away-side suppression
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Modification of the dihadron distribution
z
Effect of longitudinal flow
C. Salgado
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Jet Remnants
STAR
PHENIX
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Angular distribution of radiative gluons
Radiation in vacuum
q
Further interaction of the radiated gluons with
the medium?
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Sonic Boom
Casalderrey-Solana, Shuryak and Teaney
Linearize disturbance
qM
Trigger
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Summary

• Large suppression of high pT spectra
• Strong medium modification of jet structure
• 30 times higher gluon density than cold nuclei

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Bulk Elliptic Flow
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Summary

• Large suppression of high pT spectra
• Strong medium modification of jet structure
• 30 times higher gluon density than cold nuclei
• Strongly interacting quark-gluon plasma
• Beginning of jet tomography study
• Details of modified fragmentation
• Heavy quark fragmentation (R. Averbeck)
• Dihadron fragmentation
• Jet-gamma events

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(No Transcript)
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Di-hadron fragmentation function
Majumder
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Future of Jet quenching
gjet correlation in AuAu in run4?
More accurate determination of initial Et
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Modification for Heavy Quarks
(1) Slow clock for formation time
(2) Color factor
(3) Dead cone effect
DEQltDEg, DEq
Djordjevic Gyulassy Zhang XNW Armesto,Dainese,
Salgado Wiedemann
Zhang XNW
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Charm quark
Large charm quark Suppression?
Hadronic scattering?
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Parton recombination
Hwa Fries
Particle or parton correlations are not trivial