Identified Charged Hadron Production at High pT in sqrt(s_NN) = 200 GeV Au+Au Collisions at RHIC-PHENIX

Masahiro Konno

One of the remarkable observations in sqrt(s_NN) = 200 GeV Au+Au collisions at RHIC is the particle-type dependence of hadron yield suppression at intermediate pT (2-4 GeV/c). There is a significant suppression in the neutral pion and charged hadron yields, compared to expectations from scaled p+p results. In contrast, large enhancement of (anti)protons relative to pions is observed at intermediate pT. The pT reach of identified particles is extended by high statistics data and the introduction of an aerogel Cherenkov detector. We can study the identified charged hadron production at higher pT. We will present pT spectra, particle ratios, nuclear modification factors and their scaling properties between different collision systems.