Freeze-out dynamics at RHIC
arXiv:nucl-ex/0408022 · doi:10.1556/APH.24.2005.1-4.6
Abstract
Investigation of the final hadronic state properties of ultra-relativistics 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 equlibrium 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 disscuss dynamical evoution of the collission system.
6 pages, 2 figures; to appear in the proceedings of the 20th Winter Workshop on Nuclear Dynamics, held in Trelawny Beach, Jamaica in March 2004