Leptoquark models for the $B$-physics anomalies

Abstract

The $B$-physics experiments at LHCb, BaBar and Belle hint towards deviations from Lepton Flavor Universality in both the tree-level and loop-induced $B$ meson semileptonic decays. We propose a leptoquark model with light right-handed neutrinos which can accommodate both $R_K^{\exp }<R_K^{\mathrm{SM}}$ and $R_{D^{(\ast )}}^{\exp }>R_{D^{(\ast )}}^{\mathrm{SM}}$. We discuss several of its predictions which can be tested in modern day experiments. We also comment on the recent finding at LHCb, namely $R_{K^{\ast }}^{\exp }<R_{K^{\ast }}^{\mathrm{SM}}$.

4 pages, 1 figure, proceedings of the 52nd Rencontres de Moriond, Electroweak session, La Thuile (Italy) 2017

References in corpus (1)

• Measurement of the branching ratio of ${\bar{B}}^0\to D^{\ast +}{\tau }^{-}{\bar{\nu }}_{\tau }$ relative to ${\bar{B}}^0\to D^{\ast +}{\ell }^{-}{\bar{\nu }}_{\ell }$ decays with a semileptonic tagging method

Cited by in corpus (1)

• Invoking Chiral Vector Leptoquark to explain LFU violation in B Decays