Vector leptoquark resolution of RK and RD(*) puzzles

We propose that three recent anomalies in B meson decays, R-D(*), R-K, and P'(5), might be explained by only one vector leptoquark weak triplet state. The constraints on the parameter space are obtained by considering t -> b tau(+)nu data, lepton flavor universality tests in the kaon sector, bounds on the lepton flavor violating decay B -> K mu tau, and b -> c mu (nu) over bar decays. The presence of such vector leptoquark could be exposed in precise measurements of top semitauonic decays to b quark. The model predicts enhanced decay rate of B -> K (nu) over bar nu, approximate equality of lepton flavor universality ratios R-K*, R-K, and suppressed branching fraction of B-s -> mu(+) mu(-). (C) 2016 The Authors. Published by Elsevier B.V.