摘要
The φ-charmonium dissociation reactions in hadronic matter are studied.Unpolarised cross sections for ФJ/ψ → Ds^-Ds^＋, ФJ/ψ →Ds^＊-Ds^＋ or Ds^-Ds^＊＋, ФJ/ψ →Ds^＊-Ds^＊＋, Фψ′→Ds^＊-Ds^＋, Фψ′→ Ds^＊-Ds^＋ or Ds^-Ds^＊＋,Фψ′→Ds^＊-Ds^＊＋,Фχc →Ds^-Ds^＋, Фχc→Ds^＊-Ds^＋ or Ds^-Ds^＊＋ and Фχc → Ds^＊-Ds^＊＋ 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 Ф distribution function we calculate the dissociation rates of the charmonia in interactions with the Ф meson in hadronic matter.The dependence of the rates on temperature and charmonium momentum is relevant to the influence of Ф mesons on charmonium suppression.
The φ-charmonium dissociation reactions in hadronic matter are studied.Unpolarised cross sections for ФJ/ψ → Ds^-Ds^＋, ФJ/ψ →Ds^＊-Ds^＋ or Ds^-Ds^＊＋, ФJ/ψ →Ds^＊-Ds^＊＋, Фψ′→Ds^＊-Ds^＋, Фψ′→ Ds^＊-Ds^＋ or Ds^-Ds^＊＋,Фψ′→Ds^＊-Ds^＊＋,Фχc →Ds^-Ds^＋, Фχc→Ds^＊-Ds^＋ or Ds^-Ds^＊＋ and Фχc → Ds^＊-Ds^＊＋ 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 Ф distribution function we calculate the dissociation rates of the charmonia in interactions with the Ф meson in hadronic matter.The dependence of the rates on temperature and charmonium momentum is relevant to the influence of Ф mesons on charmonium suppression.
基金
Supported by National Natural Science Foundation of China(11175111)
