Suppression of psi' and J/psi in high-energy heavy-ion collisions

被引:30
作者
Wong, CY
机构
[1] Oak Ridge National Laboratory, Oak Ridge, TN
关键词
D O I
10.1103/PhysRevLett.76.196
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
The experimental ratio of psi' to J/psi is approximately a constant in pA collisions, but decreases as the transverse energy increases in nucleus-nucleus collisions. These peculiar features can be explained as arising from approximately the same <c(c)over bar>-baryon absorption cross section for psi' and J/psi but greater disruption probabilities for psi' than for J/psi due to the interaction of the <c(c)over bar> system with soft particles produced in baryon-baryon collisions.
引用
收藏
页码:196 / 199
页数:4
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