New texture-zero models for lepton mixing

TL;DR

This paper systematically explores predictive lepton mixing models within the type-I see-saw framework, focusing on texture zeros in neutrino mass matrices, and identifies new cases not previously discussed.

Contribution

It introduces new predictive models with texture zeros in neutrino mass matrices within the type-I see-saw mechanism, expanding the existing literature.

Findings

Identified new texture-zero models for lepton mixing

Provided a systematic classification of such models

Enhanced understanding of neutrino mass matrix structures

Abstract

I systematically consider, in the context of the type-I see-saw mechanism, all the predictive cases in which both the Dirac mass matrix connecting the left-handed neutrinos to the right-handed neutrinos, and the Majorana mass matrix of the latter neutrinos, feature texture zeros, while the mass matrix of the charged leptons is diagonal. I have found a few cases which had not been discussed in the literature previously.