Scalar leptoquarks and the rare B meson decays

Abstract

We study some rare decays of B meson involving the quark level transition b →ql+l− (q = d, s) in the scalar leptoquark model. We constrain the leptoquark parameter space using the recently measured branching ratios of Bs,d → μ+ μ− processes. Using such parameters, we obtain the branching ratios, direct CP violation parameters and isospin asymmetries in B → Kμ+ μ− and B → πμ+ μ− processes. We also obtain the branching ratios for some lepton flavour violating decays B →li+lj−. We find that the various anomalies associated with the isospin asymmetries of B → Kμ+ μ− process can be explained in the scalar leptoquark model.