Neutrinos, their Partners and Unification

TL;DR

This paper explores the unification of gauge interactions, fermion structures, and neutrino properties within a theoretical framework, analyzing symmetry-breaking, mass generation, and experimental implications.

Contribution

It proposes a unified gauge-theoretic model incorporating neutrinos and mirror partners, analyzing symmetry-breaking channels, mass mechanisms, and experimental constraints.

Findings

Possible symmetry-breaking scales identified

Majorana masses for neutrinos and mirror partners analyzed

Implications for neutrino mixing and mass hierarchies discussed

Abstract

Efforts to unify group-theoretically the standard-model gauge interactions with the generation structure of fermions and their mirror partners should be accompanied with the unification of the corresponding gauge couplings. In this paper the possibility of such a unification is studied and conclusions on possible symmetry-breaking channels and scales, as well as on the fermion content of the theory, are drawn. The breaking of some of the symmetries allows various Majorana masses for neutrinos and their mirror partners, so these are studied next. Implications to neutrino mixings and mass hierarchies in connection with recent experimental results, as well as to electroweak precision tests, are then discussed.