Open AccessResearch on branching ratio of B0→π－l+ν l decay
Author(s) -
刘晓静,
张佰军,
华中,
肖利,
刘兵,
吴义恒,
王清才,
王岩,
张丙新
Publication year - 2011
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.60.041301
Subject(s) - physics , branching fraction , branching (polymer chemistry) , particle physics , nuclear physics , particle decay , mass ratio , elementary particle , astrophysics , chemistry , organic chemistry
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 f0(q2), thereby we can study the effect of leptonic mass on B0→πl+ν l (l=e, μ, τ) decay. In this paper, we calculate the branching ratio of B0→πl+ν 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.