A common origin of $R_K$ and neutrino masses

TL;DR

This paper proposes that leptoquarks responsible for the $R_K$ anomaly can also naturally generate small neutrino masses via one-loop processes, linking flavor anomalies to neutrino physics.

Contribution

It introduces a model where the same leptoquarks explain $R_K$ anomalies and generate neutrino masses through one-loop mixing with the Higgs.

Findings

Leptoquarks can account for $R_K$ anomaly and neutrino masses simultaneously.

Neutrino masses are generated at one-loop level via leptoquark-Higgs mixing.

The model provides a unified explanation for flavor anomalies and neutrino mass origin.

Abstract

The same leptoquarks that explain the recently observed anomaly in $R_K$ can generate naturally small Majorana neutrino masses at one-loop level through mixing with the standard model Higgs boson. This is particularly relevant in models with at least two leptoquarks contributing to $b \rightarrow s ll$ transitions.