Effects of inelastic (re)scattering processes s→gg and gg→s on strange hadron production in pp collisions at RHIC and LHC energies  

作　　者：龙海燕 冯笙琴 

机构地区：[1]Dept.of Physics,College of Science,China Three Gorges University [2]Key Laboratory of Quark and Lepton Physics(Huazhong Normal University),Ministry of Education [3]School of Physics and Technology,Wuhan University

出　　处：《Chinese Physics C》2012年第7期616-621,共6页中国物理C（英文版）

基　　金：Supported by National Natural Science Foundation of China (10975091);Excellent Youth Foundation of Hubei Scientific Committee (2006ABB036);Education Commission of Hubei Province of China (Z20081302)

摘　　要：The rapidity densities at mid-rapidity and the transverse momentum distributions for strange hadrons produced in pp collisions are analyzed using the modified PACIAE model by considering the effect of inelastic （re）scattering processes ss -→gg and gg→ss in parton （re）scattering. The calculated results of the transverse momentum spectra of the strangeness fitting with data measured by STAR and ALICE Collaborations can be improved, especially at large transverse momentum levels. This demonstrates that the effect of inelastic （re）scattering processes of ss→gg and gg→ss is not negligible at RHIC and LHC energy levels.The rapidity densities at mid-rapidity and the transverse momentum distributions for strange hadrons produced in pp collisions are analyzed using the modified PACIAE model by considering the effect of inelastic （re）scattering processes ss -→gg and gg→ss in parton （re）scattering. The calculated results of the transverse momentum spectra of the strangeness fitting with data measured by STAR and ALICE Collaborations can be improved, especially at large transverse momentum levels. This demonstrates that the effect of inelastic （re）scattering processes of ss→gg and gg→ss is not negligible at RHIC and LHC energy levels.

关 键 词：strange particle rapidity distribution transverse momentum distribution PACIAE model inelastic （re）scattering process 

分 类 号：O572.2[理学—粒子物理与原子核物理]