The Statistical Model and Different Freeze-Out Conditions

作     者：H. Oeschler J. Cleymans K. Redlich S. Wheaton 

作者单位：Institute of Nuclear PhysicsTechnische Universitt DarmstadtD-64289 DarmstadtGermany UCT-CERN Research Centre and Department of PhysicsUniversity of Cape TownRondebosch 7701South Africa Institute of Theoretical PhysicsUniversity of WroclawPl-45204 WroclawPoland Institute of Nuclear PhysicsTechnische Universitt DarmstadtD-64289 DarmstadtGermanyUCT-CERN Research Centre and Department of PhysicsUniversity of Cape TownRondebosch 7701South Africa 

会议名称：《The 19th International Conference on Ultra-Relativistic Nucleus-Nucleus Collisions》

会议日期：1000年

学科分类：07[理学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学] 

摘      要：The recently discovered sharp peak in the excitation function of the K+/π+ ratio around 30 A GeV in relativistic heavy-ion collisions is discussed in the framework of the Statistical Model . In this model, the freeze-out of an ideal hadron gas changes at a temperature T - 140 MeV and a baryon chemical potential μB =410 MeV corresponding to an energy of s = 8.2 GeV, from a situation where baryons dominate to one with mainly mesons .