Investigation of the final hadronic state properties of ultra-relativistic pp and Au+Au collisions supplies information on freeze-out conditions at RHIC and possible insights into early stages of these collisions. A variety of particle spectra measured by STAR are studied within the framework of chemical and local kinetic equilibrium models. Here we present the extracted chemical and final kinetic freeze-out temperatures, strangeness saturation factor, final collective flow velocity, and the inferred flow velocity at chemical freeze-out. In light of those measurements we discuss dynamical evolution of the collision system.
|Number of pages||6|
|Journal||Acta Physica Hungarica. A. Heavy Ion Physics|
|Publication status||Published - 1 Oct 2005|
|Event||Quark Matter 2005: International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions, 18th - Budapest, Hungary|
Duration: 4 Aug 2005 → 9 Aug 2005