Radiative lepton model in a non-invertible fusion rule

TL;DR

This paper introduces a novel radiative lepton mass model utilizing a $Z_2$ gauging $Z_5$ fusion rule, generating charged-lepton and neutrino masses at one loop, and explores related phenomenological implications.

Contribution

It presents a new radiative lepton mass model based on a non-invertible fusion rule, with detailed phenomenological analysis of lepton flavor violations and CP phases.

Findings

Charged-lepton masses generated at one loop via fusion rule breaking

Neutrino masses induced at one loop without breaking the fusion rule

Predictions for CP phases and lepton electric dipole moments

Abstract

We propose a radiatively induced lepton mass model introducing a $Z_2$ gauging $Z_5$ fusion rule. In our framework, the charged-lepton mass matrix is generated at one loop level via dynamical breaking of the fusion rule. On the other hand, the neutrino mass matrix is induced at one-loop level without breaking the fusion rule. As a direct consequence of the loop induced charged lepton masses, we can also consider lepton flavor violations, electron and muon $g-2$, and charged-lepton electric dipole moments that come into our valid phenomenological discussion. Then, we perform numerical analysis and show some interesting tendency on Dirac CP phase, two Majorana phases, charged-lepton electric dipole moments and the neutrinoless double beta decay, all of which depends on their arguments where we fix the absolute values of our free parameters in order to satisfy experimental data of the lepton masses and mixing angles.