J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production
J/ψ-N center of mass energy dependence of nuclear absorption effect on J/ψ production作者机构:Physics Department Academy of Armored Forces Engineering of PLA Physics Graduate School Shijiazhuang Railway Institute Institute of High Energy Physics Chinese Academy of Sciences
出 版 物:《Chinese Physics C》 (中国物理C(英文版))
年 卷 期:2010年第34卷第1期
页 面:22-27页
核心收录:
学科分类:0709[理学-地质学] 07[理学] 0708[理学-地球物理学] 0804[工学-仪器科学与技术] 0827[工学-核科学与技术] 0703[理学-化学] 0704[理学-天文学] 070202[理学-粒子物理与原子核物理] 0702[理学-物理学]
基 金:Supported by Natural Science Foundation of Hebei Province (A2008000421)
主 题:x F (or y)-dependence of absorption effect NRQCD model shadowing
摘 要:In this paper, the J/ψ nuclear absorption effect is studied at RHIC and LHC energies with the EKS98 shadowing parameterizations. By assuming that the J/ψ absorption cross section, σ abs , increases with the charmonium-nucleon (J/ψ-N) center of mass energy, s J/ψN , it is found that σ abs should depend on x F (or y) at a certain center of mass energy per nucleon pair,s , especially at LHC energies. The theoretical results with the x F (or y)-dependence of the absorption effect are in good agreement with the experiment data from PHENIX in d-Au collisions and the predicted results will be examined by the forthcoming experimental data from LHC in d-Pb collisions. Finally, we also present baseline calculations of cold nuclear matter effects on J/ψ production in nucleus-nucleus (A-A) collisions and find that the x F (or y)-dependence of absorption effect is very small at both RHIC and LHC energies in A-A collisions.