用QCD因子化方法研究B→PV两体弱衰变过程(英文)  

Two-Body B Decays to Pseudoscalar and Vector Mesons in QCD Factorization Approach

作　　者：杨茂志[1] 杨亚东 

机构地区：[1]中国科学院高能物理研究所 [2]Department of Physics,Technion,Haifa 32000,Israel

出　　处：《高能物理与核物理》2002年第z1期34-40,共7页High Energy Physics and Nuclear Physics

摘　　要：基于最近CLEO实验和B介子物理中理论研究的进展,在QCD因子化方案下研究了B介子到一个赝标π,K和一个矢量介子p,ω的两体弱衰变过程.在合理的参数范围内,理论计算与实验相符得很好.Motivated by recent CELO measurements and the progress of the theory of B decays, B PV(P=π, K; V= K*, p,ω ) decay modes are studied in the framework of QCD factorization. All the measured branching ratios are well accommodated in the reasonable parameter space and predictions for other decay modes are well below the experimental upper limits.

关 键 词：因子化 弱衰变 介子 

分 类 号：O572.3[理学—粒子物理与原子核物理]