A two loop induced neutrino mass model with modular $A_4$ symmetry

TL;DR

This paper introduces a two-loop radiative neutrino mass model utilizing modular $A_4$ symmetry, which constrains couplings and predicts lepton sector phenomena consistent with experimental data.

Contribution

It presents a novel two-loop neutrino mass model with modular $A_4$ symmetry that restricts couplings and aligns with lepton flavor and oscillation observations.

Findings

Predictions for lepton flavor violations

Compatibility with neutrino oscillation data

Discussion on muon anomalous magnetic moment and dark matter

Abstract

We propose a model with radiatively induced neutrino mass at two-loop level, applying modular $A_4$ symmetry. The neutrino mass matrix is formulated where the structure of associated couplings are restricted by the symmetry. Then we show several predictions in the lepton sector, satisfying lepton flavor violations as well as neutrino oscillation data. We also discuss muon anomalous magnetic moment and briefly comment on dark matter candidate.