Condition driving chemical freeze-outA. Tawfik
University of Bielefeld - P.O. Box 100131, D-33501 Bielefeld, Germany
received 23 March 2006; accepted in final form 1 June 2006
published online 30 June 2006
We propose that it is the entropy density, which characterizes the chemical freeze-out of hadrons in heavy-ion collision experiments. Taking its value from lattice QCD calculations at zero chemical potential, we find that it is excellent in reproducing all experimentally estimated statistical freeze-out parameters, temperature and baryochemical potential. We consistently review the quality of the earlier proposed suggestions.
12.40.Ee - Statistical models.
12.40.Yx - Hadron mass models and calculations.
05.70.Ce - Thermodynamic functions and equations of state.
© EDP Sciences 2006