Impact of vector leptoquarks on B → K ∗ I < sup > + < /sup > I < sup > - < /sup > anomalies

Abstract

Motivated by the recent measurement of the lepton flavour nonuniversality ratio RK∗ by the LHCb Collaboration, we study the implications of vector leptoquarks on the observed anomalies associated with the B → K ∗ I+ I- decay processes. The leptoquark couplings are constrained from the measured branching ratios of Bs → l+l-, KL → l+l- and Bs μm± e± processes. Using these constrained couplings, we estimate the branching ratios, forward-backward and lepton polarization asymmetries and also the form factor independent optimized observables (Pi (′)) for B → K ∗l+l- modes in the high recoil limit.We also study the other lepton flavour universality violating observables, such as QFL,T , Qi and B5,6s, where i = 1, 2, L6, 8. Furthermore, we investigate the lepton flavour violating KL → μ m ± e ± decay process in this model.