光锥QCD求和规则计算B_S→K形状因子  

The Calculation of B_S→K Form Factor in the Light Cone QCD Sum Rule

作　　者：吴向尧[1] 李红[2] 尹新国[1] 从守民[1] 

机构地区：[1]淮北煤炭师范学院物理系,安徽淮北235000 [2]淮北煤炭师范学院计算机系,安徽淮北235000

出　　处：《淮北煤师院学报（自然科学版）》2003年第4期20-25,共6页Journal of Huaibei Teachers College(Natural Sciences Edition)

摘　　要：本文用光锥QCD求和规则计算BS→K跃迁形状因子,通过构造新的关联函数,消除了twist-3波函数的不确定性给计算结果所带来的影响,从而能更精确地抽取CKM矩阵元｜Vub｜.In this paper,the BS→K transition form factor was calculated by the light cone QCD sum rule.We chosed a new correlative function to eliminate the effect caused by the uncertainty of twist-3 function,so that CKM matrix element |Vub| can be extracted precisely.

关 键 词：光锥QCD求和规则 Bs→K形状因子 关联函数 CKM矩阵元 twist-3波函数 粒子物理 介子 

分 类 号：O572.33[理学—粒子物理与原子核物理]