摘要
对NA50合作组给出的入射动量为158AGeV/c的Pb-Pb碰撞中的J/ψ反常抑制现象进行了分析.在J/ψ的核与随动者吸收理论基础上,假设了QGP相变在对心Pb-Pb碰撞中的产生及QGP环境对J/ψ粒子100%的吸收效应,从而改进了高能重离子碰撞中的J/ψ微分产生截面,理论较好地解释了实验结果.
We have analyzed the experimental data obtained by NA50 Collaboration in Pb-Pb collisions at 158A GeV/c. By assuming the QGP phase transition in central Pb-Pb collisions and its 100% suppression to J/ψ, we correct the differential cross section of J/ψ production in high-energy heavy-ion collisions based on the theory of J/ψ absorption by nucleons and comovers. The theoretical result fits the experimental data well.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
2006年第10期5161-5165,共5页
Acta Physica Sinica
