Rare semileptonic B →k (π) li- lj+ decay in a vector leptoquark model

Abstract

We investigate the consequence of vector leptoquarks on the rare semileptonic lepton flavor violating decays of the B meson which are more promising and effective channels to probe the new physics signal. We constrain the resulting new leptoquark parameter space by using the branching ratios of Bs,d→l+l-, KL→l+l- and τ-→l-γ processes. We estimate the branching ratios of rare lepton flavor violating B→K(π)li-lj+ processes using the constrained leptoquark couplings. We also compute the forward-backward asymmetries and the lepton nonuniversality parameters of the LFV decays in the vector leptoquark model. Furthermore, we study the effect of vector leptoquark on the (g-2)μ anomaly.