Physics – Nuclear Physics – Nuclear Experiment
Scientific paper
2004-11-08
J.Phys. G31 (2005) S393-S398
Physics
Nuclear Physics
Nuclear Experiment
7 pages, 5 figures, proceedings of Hot Quarks 2004 workshop, Taos Valley, New Mexico, 18-24 Jul 2004,, to be published in J. P
Scientific paper
10.1088/0954-3899/31/4/048
Large proton and antiproton enhancement with respect to pions has been observed at intermediate transverse momentum $p_T \approx$ 2-5 GeV/$c$ in Au+Au collisions at RHIC. To investigate the possible source of this anomaly, the production of $\phi$ mesons and two particle angular correlations triggered by mid-$p_T$ baryons or mesons are studied. We also present the first measurement of proton and antiproton production at $\sqrt{s_{NN}} = 62.4$ GeV in Au+Au collisions, which aims to study the energy dependence of the observed baryon enhancement.
Chujo Tatsuya
for the PHENIX Collaboration
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