Left-Right Symmetric Theory with Light Sterile Neutrinos

TL;DR

This paper proposes a minimal left-right symmetric model with independent baryon and lepton gauge symmetries, introducing light sterile neutrinos and neutrino masses via the type III seesaw mechanism, with implications for neutrino phenomenology.

Contribution

It introduces a simple, anomaly-free left-right symmetric framework with light sterile neutrinos and links neutrino mass generation to leptoquark fields within the model.

Findings

Predicts the existence of two light sterile neutrinos.

Neutrino masses generated through type III seesaw mechanism.

Discusses phenomenological implications of the model.

Abstract

A simple theoretical framework for the spontaneous breaking of parity, baryon and lepton numbers is proposed. In this context, the baryon and lepton numbers are independent local gauge symmetries, while parity is defined making use of the left-right symmetry. We show that in the minimal model the new leptoquark fields needed to define an anomaly-free theory also generate neutrino masses through the type III seesaw mechanism. The spectrum of neutrinos and some phenomenological aspects are discussed. This theory predicts the possible existence of two light sterile neutrinos.