Speaker
Ron Belmont
(University of Michigan, Wayne State University)
Description
PHENIX has recently reported[arXiv:1304.3410] measurements of identified charged hadron spectra and ratios in Au+Au and d+Au collisions at $\sqrt{s_{NN}}$ = 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 $p_T$ region while the baryon production exhibits a much stronger enhancement. In this talk, the $p_T$ spectra and ratios of identified charged hadrons $\pi^{\pm}$, $K^{\pm}$, $p$, and $\bar{p}$ in 5 different centrality classes for each collision species will be presented. Implications for particle production will be discussed.
Author
Ron Belmont
(University of Michigan, Wayne State University)
