Phenomenological Analysis of Hybrid Textures of Neutrinos

TL;DR

This paper conducts a detailed phenomenological analysis of hybrid neutrino mass matrix textures, identifying viable configurations and exploring their implications for CP violation, mixing angles, and Majorana mass bounds.

Contribution

It narrows down the viable hybrid textures of neutrinos to 23 at 99% confidence level and analyzes their phenomenological consequences.

Findings

23 hybrid textures are viable at 99% C.L.

Lower bounds on Majorana mass are established for allowed textures.

Implications for CP phases and mixing angles are discussed.

Abstract

We present a comprehensive phenomenological analysis of the allowed hybrid textures of neutrinos. Out of a total of sixty hybrid textures with one equality between the elements of neutrino mass matrix and one texture zero only twenty three are found to be viable at 99% C.L. whereas the earlier analysis found fifty four to be viable. We examine the phenomenological implications of the allowed hybrid textures including Majorana type CP-violating phases, 1-3 mixing angle and Dirac type CP-violating phase, $\delta$. We, also, obtain lower bound on effective Majorana mass for all the allowed hybrid textures.