Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200 GeV

Details Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200 GeV Jet Structure of Baryon Excess in Au+Au Collisions at sqrt(s_NN) = 200 GeV

2004-08-07

arxiv.org/abs/nucl-ex/0408007v1

Phys.Rev.C71:051902,2005

Physics

Nuclear Physics

Nuclear Experiment

396 authors, 6 pages text, 4 figures, RevTeX 4. To be submitted to PRL. Plain text data tables for the points plotted in figur

Scientific paper

10.1103/PhysRevC.71.051902

Two particle correlations between identified meson and baryon trigger particles with 2.5 < p_T < 4.0 GeV/c and lower p_T charged hadrons have been measured at midrapidity by the PHENIX experiment at RHIC in p+p, d+Au and Au+Au collisions at sqrt(s_NN) = 200 GeV. The probability of finding a hadron near in azimuthal angle to the trigger particle is almost identical for leading mesons and baryons for non-central Au+Au. The yield for both trigger baryons and mesons is significantly higher in Au+Au than in p+p and d+Au, except for trigger baryons in central collisions. The baryon excess is likely to arise predominantly from hard scattering processes.

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