Extraction of kinetic freeze-out properties and effect of resonance decays

Abstract

We present STAR results from identified particle spectra measured in $\sqrt{s_{NN}}$ = 62.4 GeV Au-Au collisions. Particle production and system dynamics are compared to results at $\sqrt{s_{NN}}$ = 200 GeV. We extract kinetic and chemical freeze-out parameters using blast wave model parameterization and statistical model. We discuss the effect of resonance decays on the extracted kinetic freeze-out parameters.Comment: Proceedings of the 21st Winter Workshop on Nuclear Dynamics, Breckenridge, Colorado, February 5-12, 200