A modified explanation of cold nuclear matter effects on J/ψ production in p+A collisions

  • A modified explanation of the cold nuclear matter (CNM) effects on J/ψ production in p+A collisions is presented in this paper. The advantage of the modified explanation is that all the CNM effects implemented in this model have clear physical origins and are mostly centered on the idea of multiple parton scattering. With the CNM effects presented in this paper, we calculated the nuclear modification factor RpA in J/ψ production under different collision energies. The results are compared with the corresponding experiment data and the factors calculated with classic nuclear effects. The factors calculated with CNM effects presented in this paper can accurately reproduce almost all existing J/ψ measurements in p-A collisions, which is much better than results obtained with the factors calculated with classic nuclear effects. The new model is therefore a more suitable approach to explain CNM effects in the hardproduction of quarkonium.
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LIU Zhi-Feng. A modified explanation of cold nuclear matter effects on J/ψ production in p+A collisions[J]. Chinese Physics C, 2015, 39(8): 084104. doi: 10.1088/1674-1137/39/8/084104
LIU Zhi-Feng. A modified explanation of cold nuclear matter effects on J/ψ production in p+A collisions[J]. Chinese Physics C, 2015, 39(8): 084104.  doi: 10.1088/1674-1137/39/8/084104 shu
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Received: 2014-11-20
Revised: 1900-01-01
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A modified explanation of cold nuclear matter effects on J/ψ production in p+A collisions

    Corresponding author: LIU Zhi-Feng,
  • Institute of Geophysics, Shijiazhuang Economic University, Shijiazhuang, China

Abstract: A modified explanation of the cold nuclear matter (CNM) effects on J/ψ production in p+A collisions is presented in this paper. The advantage of the modified explanation is that all the CNM effects implemented in this model have clear physical origins and are mostly centered on the idea of multiple parton scattering. With the CNM effects presented in this paper, we calculated the nuclear modification factor RpA in J/ψ production under different collision energies. The results are compared with the corresponding experiment data and the factors calculated with classic nuclear effects. The factors calculated with CNM effects presented in this paper can accurately reproduce almost all existing J/ψ measurements in p-A collisions, which is much better than results obtained with the factors calculated with classic nuclear effects. The new model is therefore a more suitable approach to explain CNM effects in the hardproduction of quarkonium.

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