We study the effect of scalar leptoquarks on some rare decays of $B_s$ mesons involving the quark level transition $b\rightarrow s$ $l^{ +} l^{ -}.$ In particular we consider the decays $B_{ s} \rightarrow \mu^{ +} \mu^{ -}$, $\bar B_d^0 \to X_s \mu^+ \mu^-$ and $B_{ s} \rightarrow \phi$ $\mu^{ +} \mu^{ -}$. The leptoquark parameter space is constrained using the recently measured branching ratio of the $B_{ s} \rightarrow \mu^{ +} \mu^{ -}$ process at LHCb and CMS experiments. Using such parameters we obtain the branching ratio, forward backward asymmetry and the CP asymmetry parameters in the angular distribution of $B_s \rightarrow \phi$ $\mu^+ \mu^-$ process.
Categories: hep-ph