Identified charge hadron spectra and ratios in Au+Au and d+Au collisions at √S_NN = 200 GeV

PHENIX has recently reported measurements of identified charged hadron spectra and ratios in Au+Au and d+Au collisions at √S_NN = 200 GeV. Identified hadrons are an important probe of both hot and cold nuclear matter. The intermediate p_T region, 2-5 GeV/c, is of particular interest. In Au+Au collisions, the production of mesons is suppressed in this p_T region relative to that in p+p collisions, while the production of baryons is nearly unmodified. On the other hand, in d+Au collisions, the meson production exhibits a slight enhancement in this pT region while the baryon production exhibits a much stronger enhancement. In these proceedings, the p_T spectra and ratios of identified charged hadrons π^±, K^±, p, and p-bar in 5 different centrality classes for each collision species will be discussed.