$B_{s,d}^0\rightarrow l^+l^-$ in the minimal gauged $(B-L)$ supersymmetry

Abstract

Complete expressions of effective Hamilton for $b\rightarrow sl^+l^-\;(l=\mu,\;\tau)$ are derived in the framework of minimal supersymmetric extension of the standard model with local $B-L$ gauge symmetry. With some assumptions on parameters of the model, a numerical analysis of the supersymmetric contributions to the branching ratios of $B_s^0\rightarrow l^+l^-\;(l=\mu,\;\tau)$ is presented.