Lepton flavor violation and leptogenesis in discrete flavor symmetric scotogenic model

TL;DR

This paper explores a discrete symmetry-extended scotogenic model that explains neutrino masses, lepton flavor violation, neutrinoless double beta decay, and baryon asymmetry, providing a comprehensive phenomenological analysis.

Contribution

It implements the scotogenic model with $A_{4} imes Z_{4}$ symmetries to generate non-zero $ heta_{13}$ and studies its implications for LFV, $0 uetaeta$, and BAU.

Findings

Non-degeneracy in loop factors produces non-zero $ heta_{13}$.

LFV processes constrain neutrino parameters.

Model can account for observed baryon asymmetry.

Abstract

We have studied the scotogenic model proposed by Ernest Ma, which is an extension of the Standard Model by three singlet right-handed neutrinos and a scalar doublet. This model proposes that the light neutrinos acquire a non-zero mass at 1-loop level. In this work, the realisation of the scotogenic model is done by using discrete symmetries $A_{4}\times Z_{4}$ in which the non-zero $\theta_{13}$ is produced by assuming a non-degeneracy in the loop factor. Considering different lepton flavor violating(LFV) processes such as $l_{\alpha}\longrightarrow l_{\beta}\gamma$ and $l_{\alpha}\longrightarrow 3l_{\beta}$, their impact on neutrino phenomenology is studied. We have also analysed $0\nu\beta\beta$ and baryon asymmetry of the Universe (BAU) in this work.