Abstract
Identified hadron analyses in heavy ion collisions at RHIC show particle-type dependences of hadron yields, especially a baryon/meson difference at intermediate pT (2–5 GeV/c). In \(\sqrt{s_{NN}}\) =200 GeV Au+Au collisions, there is a significant suppression in meson yields compared to expectations from scaled p+p results. In contrast, a large enhancement of baryons relative to mesons is observed at intermediate pT. The pT reach of charged hadron identification has been extended by high statistics Au+Au data and the introduction of an aerogel Cherenkov detector. We can now study the identified charged hadron production at higher pT using the PHENIX detector. In this paper, we present identified charged hadron pT spectra, particle ratios, nuclear modification factors in Au+Au collisions at \(\sqrt{s_{NN}}\) =200 GeV.
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