x_F(or y)-Dependence of Nuclecir Absorption and Energy Loss Effects on J/ψ Production  

作　　者：WANG Hong-Min SUN Xian-Jing ZHANG Ben-Ai 

机构地区：[1]physics Department, Academy of Armored Forces Engineering of PLA, Beijing 100072, China [2]Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China [3]Institute of Applied Physics and Computation Mathematics, Beijing 100088, China

出　　处：《Communications in Theoretical Physics》2009年第12期1049-1054,共6页理论物理通讯（英文版）

摘　　要：By means of the nuclear parton distribution studied only with lepton deep-inelastic scattering experimental data, the J/ψ ＂normal nuclear absorption＂ and energy loss effects are studied in a GIauber formalism at HERA and RHIC energies. Assuming that the absorption cross section σabs increases with the charmonium-nucleon center of mass energy, the results reveal a significant dependence of the aabs on rapidity g at RHIC energies. The initial-state energy loss effect, which is found important only at HERA energies, is also considered, and its influence should be eliminated when we studied the absorption effect at low collision energies. Finally, we also present the theoretical prediction for LHC.

关 键 词：xF （or y）-dependence of absorption effect Glauber formalism energy loss 

分 类 号：O572.214[理学—粒子物理与原子核物理] TM714.3[理学—物理]