Systematic Study of Identified Particle Production in PHENIX
Abstract
Large enhancement of (anti)protons relative to pions has been observed at intermediate pT 2-5 GeV/c in central Au+Au collisions at RHIC. To investigate the possible source of this baryon enhancement, we performed a systematic study of identified hadron spectra in Au+Au and Cu+Cu collisions at sqrt(sNN) = 200 GeV, and Au+Au collisions at sqrt(sNN) = 62.4 GeV. The data set allows us to study the energy dependence and system size dependence of the baryon enhancement. We also compare the nuclear modification factors on hadron production in two different collision systems.
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