用Monte Carlo产生器GCP模拟J/ψ的产生和吸收

Monte Carlo Simulation of J/ψ Suppression Based on GCP Code

基于MonteCarlo产生器GCP，模拟了SPS能量下p-A和A-A碰撞中J／ψ粒子的产生和吸收过程．对J／ψ的吸收主要考虑了两种机制：强子环境下的核吸收和同行粒子对J／ψ的吸收．把Monto-Carlo模拟的结果和p-A和A-A碰撞中J／ψ产生的实验数据进行了对比，除了Pb-Pb碰撞外，结果和实验数据符合得很好．

The production and absorption of J/ψ at SPS energy in p-A and A-A collisions have been simulated by using the General Cascade Program (GCP). Nucleon absorption mechanism and comover absorption mechanism are considered to investigare the J/ψ suppression. The results agree well with experimental data of J/ψ production,except for the data in Ph-Ph collision.