Hight Heavy Ion physics高铂重离子物理.pptVIP

Hot and dense matter: Hard probes from RHIC to LHC Hard probes of QCD matter Energy loss in QCD matter Relativistic Heavy Ion Collider Energy loss in QCD matter What can we learn from RAA? Energy distribution from theory Medium density from RAA Heavy quark suppression Di-hadron correlations Medium density from di-hadron measurement Lowering pT: gluon fragments/bulk response Associated yields from coalescence Associated baryon/meson ratios Parton energy from g-jet and jet reconstruction Direct-g recoil suppression Jet reconstruction in heavy ion events Jet spectrum – RAA of jets Jet fragmentation Relating jets and single hadrons New development: E-loss generators Transport and medium properties Outlook I: LHC Outlook II: RHIC Conclusion RHIC results: ‘Standard’ measurements extent to high pT, start to constrain theory in detail Intermediate pT: interplay between hard and soft physics, e.g. ‘the ridge’ New large samples: experimental control over Eparton Gamma-jet analysis Jet reconstruction Conclusion Recent developments: Large luminosity at RHIC Extend to higher pT Gamma-hadron analysis (fix parton energy) Jet reconstruction Near future at LHC Large rates at high pT, exploit DE E Theory: develop in-medium shower generators Extra Slides Direct-g recoil yields Away-side suppression Intermediate pT: the ridge RAA at LHC Baryon/meson ratios Heavy-light difference Expect: dead-cone effect QCD and quark parton model Radiative energy loss in QCD Some open questions Di-hadron suppression in Au+Au 3 pt,trig 4 GeV/c Au+Au 0-10% STAR preliminary associated ?? trigger `Ridge’: associated yield at large ??, small Df Strong ?-? asymmetry suggests coupling to longitudinal flow J. Putschke et al, QM06 Weak dependence of ridge yield on pT,trig ? Relative contribution reduces with pT,trig 4 pt,trig 6 GeV/c Au+Au 0-10% STAR preliminary Jet-like peak pt,assoc. 2 GeV/c S. Wicks, W. Horowitz, QM2006 T. Renk, QM2006 Expected rise of RAA with pT depends on energy loss formalism Nuc