一个轻的赝标玻色子与轻子的味改变过程

A light pseudoscalar boson and lepton flavor violation

在双Higgs二重态模型Ⅲ下计算了一个轻的赝标玻色子对轻子味改变过程li→ljγγ和li→lje+e-的贡献.发现的衰变宽度一般情况下在10-14GeV的量级,并且运用li→lje+e-的实验结果对li→ljγγ过程的分支比进行了估计,其中对μ→eγγ分支比的估计比实验改进了大约两个量级.

In this paper we calculate the branching ratios of liιi→ιjγγ and ιi→ιje^＋e^-induced by a light pseudoscalar boson of the two Higgs doublet model m We find Ⅲat the decay width ГФ is of order 10^-14 GeV at most. We further estimate the branching ratios of li liιi→ιjγγ based on the current experimental constraints on ιi→ιje^＋e^-, and draw a conclusion that the constraint on B （μ→eγγ） is almost two orders of magnitude more stringent than the experimental one.