Phenomenology of scotogenic-like 3-loop neutrino mass models

TL;DR

This paper explores 3-loop neutrino mass models that predict observable charged lepton flavor violation, viable dark matter candidates, and potential explanations for the W-mass anomaly and baryon asymmetry, all consistent with current experimental constraints.

Contribution

It provides a detailed phenomenological analysis of radiative 3-loop seesaw models, highlighting their testable predictions and compatibility with various experimental observations.

Findings

Models predict sizable charged lepton flavor violation rates within future experimental reach.

Dark matter candidates are viable within the scotogenic framework.

Models can accommodate the W-mass anomaly and baryon asymmetry while satisfying current constraints.

Abstract

In this talk, we discuss the phenomenology of radiative 3-loop seesaw models. The 3-loop suppression allows the new particles to have masses at the TeV scale, along with relatively large Yukawa couplings, while retaining consistency with neutrino masses and mixing, as observed in neutrino oscillation experiments. This leads to a rich phenomenology, especially in searches for charged lepton flavor violation, where the models predict sizable rates, well within future experimental reach. The models provide viable fermionic or scalar dark matter candidates, as is typical within the scotogenic paradigm. We discuss specific realizations in which the W-mass anomaly and the baryon asymmetry of the Universe can be accommodated, while complying with current constraints imposed by electroweak precision observables, charged-lepton flavor violation and neutrinoless double-beta decay.