Sterile Particles from the Flavor Gauge Model of Masses

TL;DR

This paper explores a flavor gauge model of masses that predicts sterile particles, including neutrinos and majorons, which could serve as dark matter candidates, highlighting the model's implications for neutrino mass generation and symmetry breaking.

Contribution

It introduces a specific non-minimal flavor gauge model with sextet right-handed neutrinos, analyzing its neutrino mass matrix and associated sterile particles.

Findings

Majorana pairing induces flavor symmetry breaking.

Seesaw pattern naturally emerges in the neutrino mass matrix.

Sterile neutrinos and majorons are potential dark matter candidates.

Abstract

The existence of right-handed neutrinos follows from theoretical consistence of the recently suggested electroweak symmetry breaking model, based on dynamical flavor gauge symmetry breaking. Only finite number of versions of the model exists. They differ by the number and the flavor structure of the right-handed neutrinos. We choose for inspection one of them, the non-minimal version with right-handed neutrinos in sextet flavor representation, and at some points we compare it with the minimal version. We show that a Majorana pairing of the sextet right-handed neutrinos is responsible for the flavor symmetry breaking, and the seesaw pattern of the neutrino mass matrix naturally arises. The dynamically generated neutrino mass matrix spontaneously breaks the lepton number and the chiral sterility symmetry of the right-handed neutrino sector. As a result spectrum of majorons, neutrino composites, manifests. We study main characteristics of both massive sterile neutrinos and majorons which show their relevance as dark matter candidates.