SeeSaw scale discrete dark matter and two-zero texture Majorana neutrino mass matrices

TL;DR

This paper links dark matter stability to neutrino mass textures through a flavor symmetry breaking at the seesaw scale, proposing models that predict correlations relevant for upcoming experiments.

Contribution

It introduces two models connecting dark matter stability with two-zero texture Majorana neutrino masses via flavor symmetry breaking at the seesaw scale.

Findings

Correlation between reactor mixing angle and sum of neutrino masses

Lower bound on neutrinoless double beta decay effective mass

Updated phenomenology of two-zero neutrino mass textures

Abstract

In this paper we present a scenario where the stability of dark matter and the phenomenology of neutrinos are related by the spontaneous breaking of a non-Abelian flavor symmetry. In this scenario the breaking is done at the seesaw scale, in such a way that what remains of the flavor symmetry is a Z2 symmetry, which stabilizes the dark matter. We have proposed two models based on this idea, for which we have calculated their neutrino mass matrices achieving two-zero texture in both cases. Accordingly, we have updated this two-zero texture phenomenology finding an interesting correlation between the reactor mixing angle and the sum of the light neutrino masses. We also have a correlation between the lightest neutrino mass and the neutrinoless double beta decay effective mass, obtaining a lower bound for the effective mass within the region of the nearly future experimental sensitivities.