Pion Susceptibilities of the Vacuum in a Modified Global Colur Symmetry Model  

作　　者：ZONGHong－Shi WuXiao－Hua 等 

机构地区：[1]DepartmentofPhysics,NanjingUniversity,Nanjing210093,China；InstituteofTheoreticalPhysics,AcademiaSinica,P.O.Box2735,Beijing100080,China [2]DepartmentofPhysics,SIchuanUniversity,Chengdu6100

出　　处：《Communications in Theoretical Physics》2001年第4期451-454,共4页理论物理通讯（英文版）

摘　　要：Based on a modified version of the global color symmetry model,the pion susceptibilities of vacuum needed in the QCD sum rule external-field method for the coupling of pseudoscalar current to hadron have bean calculated beyond the vacuum saturation approximation.Comparison with the previous estimations has been given.

关 键 词：nonperturbative QCD GCM pion susceptibility 

分 类 号：O572.243[理学—粒子物理与原子核物理]