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arXiv 1607.02691nucl-th
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强子物质中粲偶素与φ介子碰撞的离解

Charmonium dissociation in collision with phi meson in hadronic matter

Shi-Tao Ji, Xiao-Ming Xu

摘要:

研究了强子物质中的粲偶素离解反应。在玻恩近似下,在夸克交换机制和温度依赖的夸克势下,计算了12个反应的非极化截面。该势导致了截面的显著温度依赖性。利用截面和φ分布函数计算了强子物质中粲介子与φ介子相互作用的离解率。速率对温度和粲偶素动量的依赖关系对研究φ介子对粲偶素抑制的影响有意义。

英文摘要:

The phi-charmonium dissociation reactions in hadronic matter are studied. Unpolarised cross sections for 12 reactions are calculated in the Born approximation, in the quark-interchange mechanism and with a temperature-dependent quark potential. The potential leads to remarkable temperature dependence of the cross sections. With the cross sections and the phi distribution function we calculate the dissociation rates of the charmonia in the interactions with the phi meson in hadronic matter. The dependence of the rates on temperature and charmonium momentum is meaningful to the influence of phi mesons on charmonium suppression.

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