# Modified TBM and role of a hidden $\mathbb{Z}_2$

## TL;DR

This paper explores minimally perturbed Majorana neutrino mass matrices within a residual _2 d7 _2 symmetry framework, deriving parameter constraints and demonstrating baryogenesis via flavored leptogenesis with quasi-degenerate RH neutrinos.

## Contribution

It introduces a novel approach combining residual _2 d7 _2 symmetry with minimal perturbations to study neutrino masses and baryogenesis.

## Key findings

- Derived constraint relations among neutrino parameters
- Demonstrated baryogenesis via flavored leptogenesis
- Highlighted the role of a hidden _2 symmetry

## Abstract

In a residual $\mathbb{Z}_2 \times \mathbb{Z}_2$ symmetry approach, we investigate minimally perturbed Majorana neutrino mass matrices. Constraint relations among the low energy neutrino parameters are obtained. Baryogenesis is realized through flavored leptogenesis mechanism with quasi-degenerate right handed (RH) heavy neutrinos.