# Lepton masses and mixing in a scotogenic model

## TL;DR

This paper proposes an extended three-Higgs-doublet model with discrete symmetries that explains lepton masses, mixing, and dark matter candidates, while analyzing experimental constraints and predictions for rare decays.

## Contribution

It introduces a novel scotogenic model with specific symmetries, calculating mass spectra and linking dark matter candidates with leptonic decay constraints.

## Key findings

- Identified scalar and pseudoscalar dark matter candidates.
- Predicted signals for $ ext{mu} o e ext{gamma}$ decay within experimental reach.
- Connected decay constraints to predictions for $ ext{mu} o eear{e}$ decay.

## Abstract

We consider an extension of the standard model with three Higgs doublet model and $S_3\times \mathbb{Z}_2$ discrete symmetries. Two of the scalar doublets are inert due to the $\mathbb{Z}_2$ symmetry. We have calculated all the mass spectra in the scalar and lepton sectors and accommodated the leptonic mixing matrix as well. We also show that the model has scalar and pseudoscalar candidates to dark matter. Constraints on the parameters of the model coming from the decay $\mu\to e\gamma$ were considered and we found signals between the current and the upcoming experimental limits, and from that decay we can predict the one-loop $\mu\to ee\bar{e}$ channel.