Type III Seesaw and Left-Right Symmetry

TL;DR

This paper explores a left-right symmetric model incorporating Type III seesaw for neutrino masses, proposing a double seesaw mechanism, potential dark matter candidates, and testable predictions at the LHC.

Contribution

It introduces a novel double seesaw mechanism combining Type I and Type III seesaw within a left-right symmetric framework, linking neutrino masses, dark matter, and baryogenesis.

Findings

Identifies a candidate for cold dark matter.

Analyzes the phenomenological constraints of the model.

Discusses testability at the Large Hadron Collider.

Abstract

The implementation of the Type III seesaw mechanism for neutrino masses in the context of left-right theories where parity is broken spontaneously is investigated. We propose a simple left-right symmetric theory where the neutrinos masses are generated through a double seesaw mechanism which is a combination of Type I and Type III seesaw. In this context we find a possible candidate for the cold dark matter in the Universe and discuss the Baryogenesis via Leptogenesis mechanisms. The spectrum of the theory, the phenomenological constraints and the possibility to test the theory at the Large Hadron Collider are investigated.