Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2007-02-05
Int.J.Mod.Phys.E16:3160-3167,2008
Physics
Nuclear Physics
Nuclear Experiment
talk given at XIth International Workshop on Correlations and Fluctuations in Multiparticle Production, Hangzhou China Novembe
Scientific paper
10.1142/S0218301307009154
Azimuthal angle two particle correlations have been shown to be a powerful probe for extracting novel features of the interaction between hard scattered partons and the medium produced in Au+Au collisions at RHIC. At intermediate $p_T$, 2-5GeV/c, the jets have been shown to be significantly modified in both their particle composition and their angular distribution compared to p+p collisions. Additionally, angular two particle correlations with identified hadrons provide information on the possible role of modified hadronization scenarios such as partonic recombination, which might allow medium modified jet fragmentation by connecting hard scattered partons to low $p_T$ thermal partons. PHENIX has excellent particle identification capabilities and has developed robust techniques for extracting jet correlations from the large underlying event. We present recent PHENIX results from Au+Au collisions for a variety of $p_T$ and particle type combinations. We also present p+p measurements as a baseline. We show evidence that protons and anti-protons in the $p_T$ region of enhanced baryon and anti-baryon single particle production are produced in close angle pairs of opposite charge and that the strong modifications to the away side shape observed for charged hadron correlations are also present when baryons are correlated.
for the PHENIX Collaboration
Sickles Anne
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