Neutrino mass matrix solutions and neutrinoless double beta decay

TL;DR

This paper identifies eight possible neutrino mass matrix solutions consistent with neutrinoless double beta decay data, analyzing their properties, textures, and implications for neutrino dark matter.

Contribution

It systematically determines neutrino mass matrix solutions for large effective mass values and explores their textures and dark matter implications.

Findings

Eight viable neutrino mass matrix solutions identified

Detailed analysis of zero textures and perturbations provided

Implications for neutrino hot dark matter discussed

Abstract

We present a determination of the neutrino mass matrix which holds for values of the neutrinoless double beta decay effective mass m_{ee} larger than the neutrino mass differences. We find eight possible solutions and discuss for each one the corresponding neutrino mass eigenvalues and zero texture. A minimal structure of the perturbations to add to these zero textures to recover the full mass matrix is also determined. Implications for neutrino hot dark matter are discussed for each solution.