A new neutrino mass sum rule from inverse seesaw

TL;DR

This paper introduces a new neutrino mass sum rule derived from an S4 flavor symmetry model, predicting a lower bound on neutrinoless double beta decay and connecting mixing angles.

Contribution

It presents a novel neutrino mass sum rule from an S4 flavor symmetry model, linking neutrino masses, mixing angles, and neutrinoless double beta decay.

Findings

Predicts a lower bound on neutrinoless double beta decay mass parameter.

Establishes a correlation between reactor and solar mixing angles.

Provides a new framework for neutrino mass and mixing predictions.

Abstract

A class of discrete flavor-symmetry-based models predicts constrained neutrino mass matrix schemes that lead to specific neutrino mass sum-rules (MSR). One of these implies in a lower bound on the effective neutrinoless double beta mass parameter, even for normal hierarchy neutrinos. Here we propose a new model based on the S4 flavor symmetry that leads to the new neutrino mass sum-rule and discuss how to generate a nonzero value for the reactor mixing angle indicated by recent experiments, and the resulting correlation with the solar mixing angle.