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

LIU Zhi-Feng

doi:10.1088/1674-1137/39/8/084104

Chinese Physics C> 2015, Vol. 39> Issue(8) : 084104 DOI: 10.1088/1674-1137/39/8/084104

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

LIU Zhi-Feng ^,

Institute of Geophysics, Shijiazhuang Economic University, Shijiazhuang, China

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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 R_pA 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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沈阳化工大学材料科学与工程学院沈阳 110142

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

Received Date: 2014-11-20

Accepted Date: 1900-01-01

Available Online: 2015-08-15

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 R_pA 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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