Muon $g-2$ and $B$-anomalies from Dark Matter

TL;DR

This paper proposes minimal models that simultaneously address the muon g-2 anomaly, B-anomalies, and provide a thermal dark matter candidate, integrating recent experimental results and theoretical considerations.

Contribution

It introduces a set of minimal field content models that unify explanations for dark matter, B-anomalies, and muon g-2 within a coherent framework.

Findings

Models can produce large loop contributions to B decays.

Models can naturally explain muon g-2 discrepancy.

Models include a viable thermal dark matter candidate.

Abstract

In the light of the recent result of the Muon g-2 experiment and the update on the test of lepton flavour universality $R_K$ published by the LHCb collaboration, we systematically build and discuss a set of models with minimal field content that can simultaneously give: (i) a thermal Dark Matter candidate; (ii) large loop contributions to $b\to s\ell\ell$ processes able to address $R_K$ and the other $B$ anomalies; (iii) a natural solution to the muon $g-2$ discrepancy through chirally-enhanced contributions.