pp和PbPb碰撞中大横动量K和π的光生过程(英文)  

Photoproduction of High-p_T Kaon and Pion in pp and PbPb Collisions

作　　者：蔡燕兵 余功明[1] 李云德[1] 

机构地区：[1]云南大学物理系,昆明650091

出　　处：《原子核物理评论》2014年第1期14-18,共5页Nuclear Physics Review

基　　金：National Natural Science Foundation of China(10665003,11065010)~~

摘　　要：基于微扰量子色动力学(pQCD),计算了考虑核遮蔽效应和喷注淬火效应的pp和PbPb碰撞中大横动量K和π的光生过程的产额。在光生过程中可以看到K^+/π^+的增强。数值计算结果表明,所考虑的光生过程对K和π产生是一个很好的修正。By taking into account the effects of shadowing and jet quenching, the production of high- PT kaon and pion originating from photoproduetion processes in pp and PbPb collisions is calculated based on perturbative quantum chromodynamics（pQCD）. The enhancement of K＋/π＋ is found in pho- toproduction processes. The numerical results indicate that the photoproduction processes considering in our calculation are a good modification for kaon and pion production.

关 键 词：光生过程 奇异性 K/π产率 重离子碰撞 

分 类 号：O571.6[理学—粒子物理与原子核物理]