Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2018, Vol. 29 ›› Issue (8): 116 doi: 10.1007/s41365-018-0452-7


J/ψ production in p+p and p+Pb collisions at ultrarelativistic energies

Hong-Min Wang 1 • Zhao-Yu Hou 2 • Xiu-Ting Wang 1 • Xian-Jing Sun 3   

  1. 1 Physics Department, Academy of Army Armored Forces of PLA, Beijing 100072, China
    2 Physics Graduate School, Shijiazhuang Railway Institute, Shijiazhuang 050043, China
    3 Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China
  • Contact: Hong-Min Wang
  • Supported by:

    This work was supported by the Natural Science Foundation of Hebei Province (A2012210043).

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Hong-Min Wang, Zhao-Yu Hou, Xiu-Ting Wang, Xian-Jing Sun. J/ψ production in p+p and p+Pb collisions at ultrarelativistic energies.Nuclear Science and Techniques, 2018, 29(8): 116     doi: 10.1007/s41365-018-0452-7


The production of J/Ψ mesons in p+p and p+Pb collisions is studied in the framework of color-glass condensate together with a simple color evaporation model. Considering the nuclear effects with the Glauber–Gribov approach, we calculate the cross section and the nuclear modification factor of forward J/Ψ production in p+Pb collisions at \sqrt{s} =5.02 TeV. Then, the backward J/Ψ production in p+Pb collisions at \sqrt{s}=8.16 TeV is also analyzed. In our calculation, the phenomenology KLRAdS/ CFT model and the rcBK approach, which are valid at a small x, are used to calculate the three-point function. It is shown that the theoretical results fit well with the experimental data from ALICE and LHCb.

Key words: Color-glass condensate, Forward J/Ψ production, Glauber–Gribov approach