Neutrino mass textures with one vanishing minor and two equal cofactors

TL;DR

This paper systematically analyzes neutrino mass textures with specific minor and cofactor conditions, identifying viable models and emphasizing the importance of future experiments in distinguishing them.

Contribution

It provides a comprehensive numerical analysis of textures with one vanishing minor and two equal cofactors, highlighting which are consistent with current data and their phenomenological implications.

Findings

8 out of 60 textures are compatible with current data

Future experiments will be crucial for model discrimination

Implications for neutrinoless double beta decay and cosmology

Abstract

In this paper, we carry out a numerical and systematic analysis of the neutrino mass textures, which contain one vanishing minor and an equality between two cofactors. Among 60 logically possible textures, only eight of them are excluded for both normal and inverted hierarchy by the current experimental data at 3\sigma level. We also demonstrate that the future long-baseline neutrino oscillation experiments, especially for the measurement of \theta 23 mixing angle, will play the important role in the model selection. The phenomenological implications from neutrinoless double beta decay and the cosmology observation are also examined. A discussion on the flavor symmetry realization of the textures is also given.