# The 16th International Workshop on Tau Lepton Physics (TAU2021) (Virtual Edition)

September 27, 2021 to October 1, 2021
Indiana University
America/Indiana/Indianapolis timezone

## Non zero θ_13 and δ_CP in a realistic neutrino mass model with discrete A_4 family symmetry and perturbation to Tri-bimaximal mixing via z_2 ×z_2 invariant perturbation in the neutrino sector.

Oct 1, 2021, 10:50 AM
2h
Virtual (Indiana University)

### Virtual

#### Indiana University

Poster contribution Tau2021 Abstracts

### Speaker

Gayatri Ghosh (Physics Department Gauhati University)

### Description

In this work, a flavour theory, of a neutrino mass model implementing an $A_4$ family symmetry is proposed. This scheme provides a simple way to derive tribimaximal mixing in the neutrino sector via spontaneous breaking of $A_4$ symmetric model leading to acceptable values of $\theta_{13}$ and maximal CP violation. A $z_2 \times z_2$ invariant perturbations in this model is introduced in the neutrino sector which leads to testable predictions of $\theta_{13}$ and CP violation. By changing the magnitudes of perturbations in neutrino sector, one can generate viable values of $\theta_{13}$ and neutrino oscillation parameters.

What is your topic? Physics beyond the Standard Model

### Primary author

Gayatri Ghosh (Physics Department Gauhati University)