Charmonium dissociation in collisions with φ mesons in hadronic matter

  • The φ-charmonium dissociation reactions in hadronic matter are studied. Unpolarised cross sections for φJ/ψ→Ds- Ds+, φJ/ψ→Ds*- Ds+ or Ds- Ds*+, φJ/ψ→Ds*- Ds*+, φψ'→Ds- Ds+, φψ'→Ds*- Ds+ or Ds- Ds*+, φψ'→Ds*- Ds*+, φχc→Ds- Ds+, φχc→Ds*- Ds+ or Ds- Ds*+ and φχc→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 φ distribution function we calculate the dissociation rates of the charmonia in interactions with the φ meson in hadronic matter. The dependence of the rates on temperature and charmonium momentum is relevant to the influence of φ mesons on charmonium suppression.
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Shi-Tao Ji and Xiao-Ming Xu. Charmonium dissociation in collisions with φ mesons in hadronic matter[J]. Chinese Physics C, 2017, 41(2): 024101. doi: 10.1088/1674-1137/41/2/024101
Shi-Tao Ji and Xiao-Ming Xu. Charmonium dissociation in collisions with φ mesons in hadronic matter[J]. Chinese Physics C, 2017, 41(2): 024101.  doi: 10.1088/1674-1137/41/2/024101 shu
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Received: 2016-07-19
Revised: 2016-10-09
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    Supported by National Natural Science Foundation of China (11175111)

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Charmonium dissociation in collisions with φ mesons in hadronic matter

    Corresponding author: Shi-Tao Ji,
  • 1. Department of Physics, Shanghai University, Baoshan, Shanghai 200444, China
Fund Project:  Supported by National Natural Science Foundation of China (11175111)

Abstract: The φ-charmonium dissociation reactions in hadronic matter are studied. Unpolarised cross sections for φJ/ψ→Ds- Ds+, φJ/ψ→Ds*- Ds+ or Ds- Ds*+, φJ/ψ→Ds*- Ds*+, φψ'→Ds- Ds+, φψ'→Ds*- Ds+ or Ds- Ds*+, φψ'→Ds*- Ds*+, φχc→Ds- Ds+, φχc→Ds*- Ds+ or Ds- Ds*+ and φχc→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 φ distribution function we calculate the dissociation rates of the charmonia in interactions with the φ meson in hadronic matter. The dependence of the rates on temperature and charmonium momentum is relevant to the influence of φ mesons on charmonium suppression.

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