Comparing Trimaximal Mixing and Its Variants with Deviations from Tri-bimaximal Mixing

TL;DR

This paper investigates trimaximal neutrino mixing and its variants, comparing their predictions with tri-bimaximal mixing, and discusses how to experimentally distinguish these models based on their phenomenological differences.

Contribution

The study introduces generalized trimaximal mixing scenarios and analyzes their phenomenological implications to differentiate them from tri-bimaximal mixing.

Findings

Trimaximal mixing predicts specific neutrino oscillation patterns.

Generalized scenarios show deviations from tri-bimaximal mixing.

Experimental signatures can distinguish these mixing schemes.

Abstract

We analyze in detail the predictions of "trimaximal" neutrino mixing, which is defined by a mixing matrix with identical second column elements. This column is therefore identical to the second column in the case of tri-bimaximal mixing. We also generalize trimaximal mixing by assuming that the other rows and columns of the mixing matrix individually have the same forms as for tri-bimaximal mixing. The phenomenology of these new mixing scenarios is studied. We emphasize how trimaximal mixings can be distinguished experimentally from broken tri-bimaximal mixing.