Extraction of Kinetic Freeze-out Properties and Effect of Resonance Decays

摘要

We present STAR results from identified particle spectra measured in (s_(NN))~(1/2) = 62.4 GeV Au-Au collisions. Particle production and system dynamics are compared to results at (s_(NN))~(1/2)= 200 GeV. We extract kinetic and chemical freeze-out parameters using blast wave model parametrization and statistical model. We discuss the effect of resonance decays on the extracted kinetic freeze-out parameters.