One Leptoquark to unify them? Neutrino masses and unification in the light of $(g-2)_μ$, $R_{D^{(\star)}}$ and $R_K$ anomalies

Oleg Popov; Graham A White

doi:10.1016/j.nuclphysb.2017.08.007

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arXiv · 1611.04566

One Leptoquark to unify them? Neutrino masses and unification in the light of $(g-2)_μ$, $R_{D^{(\star)}}$ and $R_K$ anomalies

Oleg Popov·Graham A White

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Abstract

Leptoquarks have been proposed as a possible explanation of anomalies in $\bar{B}\mapsto D^{*} τ\bar{ν} $ decays, the apparent anomalies in $(g-2)_μ$ 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.

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Oleg Popov, Graham A White. 2017-09-12. One Leptoquark to unify them? Neutrino masses and unification in the light of $(g-2)_μ$, $R_{D^{(\star)}}$ and $R_K$ anomalies. https://doi.org/10.1016/j.nuclphysb.2017.08.007

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