Variants of the Dark Left-Right Gauge Model: Neutrinos and Scotinos

TL;DR

This paper explores variants of a dark left-right gauge model where right-handed neutrinos are replaced by dark-matter fermions called scotinos, proposing new mechanisms for neutrino and dark matter physics.

Contribution

It introduces and analyzes variants of the dark left-right gauge model with scotinos, providing minimal realizations and new perspectives on neutrino and dark matter interactions.

Findings

Scotinos can serve as dark-matter candidates in the model.

Variants of the model accommodate different neutrino and dark matter phenomenologies.

The minimal scotogenic realization offers a simple framework for neutrino mass and dark matter.

Abstract

In the recently proposed dark left-right gauge model (DLRM) of particle interactions, the usual left-handed lepton doublet (nu,e)_L transforming under SU(2)_L is accompanied by the UNUSUAL right-handed fermion doublet (n,e)_R transforming under SU(2)_R, where n_R is NOT the Dirac mass partner of nu_L. In this scenario, whereas nu_L is certainly a neutrino, n_R should be considered a SCOTINO, i.e. a dark-matter fermion. Variants of this basic idea are discussed, including its minimal SCOTOGENIC realization.