The dependence of J/ψ-nucleon inelastic cross section on the Feynman variable

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DUAN Chun-Gui, LIU Na and MIAO Wen-Dan. The dependence of J/ψ-nucleon inelastic cross section on the Feynman variable[J]. Chinese Physics C, 2011, 35(9): 804-807. doi: 10.1088/1674-1137/35/9/002
DUAN Chun-Gui, LIU Na and MIAO Wen-Dan. The dependence of J/ψ-nucleon inelastic cross section on the Feynman variable[J]. Chinese Physics C, 2011, 35(9): 804-807.  doi: 10.1088/1674-1137/35/9/002 shu
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Received: 2010-11-30
Revised: 2010-12-07
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The dependence of J/ψ-nucleon inelastic cross section on the Feynman variable

    Corresponding author: DUAN Chun-Gui,

Abstract: By means of two typical sets of nuclear parton distribution functions, meanwhile taking account of the energy loss of the beam proton and the nuclear absorption of the charmonium states traversing the nuclear matter in the uniform framework of the Glauber model, a leading order phenomenological analysis is given in the color evaporation model of the E866 experimental data on J/ψ production differential cross section ratios RFe/Be(xF). It is shown that the energy loss effect of beam proton on RFe/Be(xF) is more important than the nuclear effects on parton distribution functions in the high Feynman variable xF region. It is found that the J/ψ-nucleon inelastic cross section depends on the Feynman variable xF and increases linearly with xF in the region xF>0.2.

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