Statistical Models and STAR's Strange Data

Abstract

The yields of strange hadrons have been measured as a function of centrality in Au+Au and in $p+p$ collisions at $\sqrt{s_{NN}}=200$ GeV in STAR. The system size and energy dependence are studied and compared for $p+p$ and Au+Au collisions. Thermal models are fitted to the ratios of various strange particles to investigate the particle production and to determine the strangeness enhancement. The temperatures ($T$) and the strangeness enhancement factors ($\gamma_{s}$) of the systems determined from the fits are presented.