One leptoquark to unify them? Neutrino masses and unification in the light of (g-2)(mu), R-D (star) and R-K anomalies

摘要

Leptoquarks have been proposed as a possible explanation of anomalies in (B) over bar bar right arrow D*tau(nu) over bar decays, the apparent anomalies in (g - 2)(mu) experiments and a violation of lepton universality. Motivated by this, we examine other motivations of leptoquarks: radiatively induced neutrino masses in the presence of a discrete symmetry that prevents a tree level see-saw mechanism, gauge coupling unification, and vacuum stability at least up to the unification scale. We present a new model for radiatively generating a neutrino mass which can significantly improve gauge coupling unification at one loop. We discuss this, and other models in the light of recent work on flavour anomalies. (C) 2017 The Author(s). Published by Elsevier B.V.