核遮蔽效应对Drell-Yan过程K因子的影响  

Nuclear shadowing in the Drell-Yan process on K factor's

作　　者：郑乔[1] 

机构地区：[1]石家庄铁道学院数理部,石家庄050043

出　　处：《河北省科学院学报》2002年第1期9-14,共6页Journal of The Hebei Academy of Sciences

基　　金：河北省自然科学基金资助项目 (编号 :1 0 0 40 1 )

摘　　要：在Drell-Yan过程αs 修正的基础上 ,引入遮蔽因子分别计算了不同能量下 p -A、A -A碰撞的K因子 ,把考虑遮蔽因子的量和没有计入遮蔽因子的量做了对比。结果表明 ,加入遮蔽因子后在小x段K值明显抬高 。Introduce nuclear shadowing factor in the α s order corrections to the Drell-Yan process as its base. We calculated the K factor's of the different energy in the p-A, A-A, collision, differently and contrast considering shadowing factor's effect with not considering shadowing factor's effect. Result indicate, values of K-factor in the small x has been obviously raised after the way it is added to the nuclear shadowing factor.

关 键 词：核遮蔽效应 DRELL-YAN过程 K因子 QCD修正 原子核 

分 类 号：O571[理学—粒子物理与原子核物理]