Effect of scalar leptoquarks on the rare decays of B_s meson

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.