Dark Matter and $(g-2)_{\mu,e}$ in radiative Dirac neutrino mass models

TL;DR

This paper introduces radiative Dirac neutrino mass models that simultaneously address neutrino masses, the muon and electron anomalous magnetic moments, and include a dark matter candidate, aligning with experimental and cosmological constraints.

Contribution

It proposes a novel class of models linking neutrino mass generation, lepton AMMs, and dark matter within a unified framework, with detailed numerical analysis confirming their viability.

Findings

Models successfully explain neutrino oscillations and AMM anomalies.

Dark Matter candidate naturally emerges and is stabilized by residual symmetry.

Models are consistent with collider and cosmological constraints.

Abstract

The origin of neutrino mass is a mystery, so is its nature, namely, whether neutrinos are Dirac or Majorana particles. On top of that, hints of large deviations of the muon and the electron anomalous magnetic moments (AMMs) are strong evidence for physics beyond the Standard Model. In this work, piecing these puzzles together, we propose a class of radiative Dirac neutrino mass models to reconcile $(g-2)_{\mu,e}$ anomalies with neutrino oscillation data. In this framework, a common set of new physics (NP) states run through the loops that generate non-zero neutrino mass and, due to chiral enhancement, provide substantial NP contributions to lepton AMMs. In addition, one of the three models studied in this work offers a Dark Matter candidate automatically stabilized by the residual symmetry, whose phenomenology is non-trivially connected to the other two puzzles mentioned above. Finally, our detailed numerical analysis reveals a successful resolution to these mysteries while being consistent with all colliders and cosmological constraints.