物理学报2011，Vol.60Issue(4)：114-120,7.
关于B0→π-l+～vl衰变过程分支比的计算
Research on branching ratio of B0→π-l+～vl decay
摘要
Abstract
We choose a correlation function of chiral current to calculate the form factors f+Bπ ( q2 ), (f)Bπ ( q2 ) and the scalar form factor of f°( q2 ), thereby we can study the effect of leptonic mass on B0→π- l+ (v)1 ( l = e, μ, Τ) decay. In this paper, we calculate the branching ratio of B0→π-l+(v)l(l =e, μ, Τ) decay for the first time, and find the leptonic mssses me and mμ may be ignored, but the heavy leptonic mass mΤ may not be ignored and it can affect the branching ratio. The calculation results are consistent with the experimental data.关键词
B介子半轻衰变/形状因子/分支比Key words
B semileptonic decay/ form factor/ branching ratio引用本文复制引用
刘晓静,张佰军,华中,肖利,刘兵,吴义恒,王清才,王岩,张丙新..关于B0→π-l+～vl衰变过程分支比的计算[J].物理学报,2011,60(4):114-120,7.基金项目
吉林省科技发展计划基金(批准号:20082112)资助的课题. （批准号:20082112）
