On interplay between flavour anomalies and neutrino properties

TL;DR

This paper proposes a minimal Standard Model extension with scalar leptoquarks that simultaneously addresses flavour anomalies, neutrino masses, muon magnetic moment, and W mass anomalies, providing a unified framework.

Contribution

It introduces a simple leptoquark model that links flavour physics, neutrino properties, and recent anomalies in particle physics.

Findings

Neutrino masses are generated radiatively within the model.

The model explains B-physics anomalies involving $b o c au u_ au$ decays.

It can also account for muon magnetic moment and W mass anomalies.

Abstract

A minimal extension of the Standard Model (SM) featuring two scalar leptoquarks, an SU(2) doublet with hypercharge 1/6 and a singlet with hypercharge 1/3, is proposed as an economical benchmark model for studies of an interplay between flavour physics and properties of the neutrino sector. The presence of such type of leptoquarks radiatively generates neutrino masses and offers a simultaneous explanation for the current B-physics anomalies involving $b \to c \ell \nu_\ell$ decays. The model can also accommodate both the muon magnetic moment and the recently reported $W$ mass anomalies, while complying with the most stringent lepton flavour violating observables.