Texture of Two Vanishing Subtraces in Neutrino Mass Matrix and Current Experimental Tests

TL;DR

This paper analyzes neutrino mass matrices with two vanishing subtraces, updating previous results with recent data, identifying seven viable textures, and exploring symmetry realizations within flavor symmetry models.

Contribution

It provides a comprehensive phenomenological study of specific neutrino mass textures and introduces symmetry models for viable and nonviable cases.

Findings

Seven textures can accommodate experimental data.

Updated analysis reduces viable textures from eight to seven.

Symmetry realizations are proposed for certain textures.

Abstract

We present a full phenomenological and analytical study for the neutrino mass matrix characterized by two vanishing $2\times2$ subtraces. We update one past result in light of the recent experimental data. Out of the fifteen possible textures, we find seven cases can accommodate the experimental data instead of eight ones in the past study. We also introduce few symmetry realizations for viable and nonviable textures based on non-abelian ($A_4$ or $S_4$) flavor symmetry within type II seesaw scenario.