Dark matter from unification

TL;DR

This paper proposes a minimal extension to the Standard Model that achieves gauge coupling unification, introduces new dark matter candidates, and is consistent with current experimental constraints.

Contribution

It introduces a novel model with specific new fermions and dynamics that unify couplings and provide dark matter candidates, with detailed analysis of stability and relic density.

Findings

Model achieves gauge coupling unification.

Dark matter candidates are consistent with collider and experimental data.

The model remains viable under current constraints.

Abstract

We consider a minimal extension of the Standard Model (SM), which leads to unification of the SM coupling constants, breaks electroweak symmetry dynamically by a new strongly coupled sector and leads to novel dark matter candidates. In this model, the coupling constant unification requires the existence of electroweak triplet and doublet fermions singlet under QCD and new strong dynamics underlying the Higgs sector. Among these new matter fields and a new right handed neutrino, we consider the mass and mixing patterns of the neutral states. We argue for a symmetry stabilizing the lightest mass eigenstates of this sector and determine the resulting relic density. The results are constrained by available data from colliders and direct and indirect dark matter experiments. We find the model viable and outline briefly future research directions.