$[SU(2)]^3$ Dark Matter

TL;DR

This paper introduces a model extending the Standard Model with an additional $SU(2)_D$ gauge symmetry, resulting in an automatic dark $U(1)$ symmetry with potential implications for dark matter physics.

Contribution

It proposes a novel extension of the Standard Model with an extra $SU(2)_D$ gauge factor and fermion bidoublets, leading to an automatic dark $U(1)$ symmetry.

Findings

Model naturally includes a dark $U(1)$ symmetry.

Implications for dark matter phenomenology are discussed.

Possible origins of the model are explored.

Abstract

An extra $SU(2)_D$ gauge factor is added to the well-known left-right extension of the standard model (SM) of quarks and leptons. Under $SU(2)_L \times SU(2)_R \times SU(2)_D$, two fermion bidoublets $(2,1,2)$ and $(1,2,2)$ are assumed. The resulting model has an automatic dark $U(1)$ symmetry, in the same way that the SM has automatic baryon and lepton $U(1)$ symmetries. Phenomenological implications are discussed, as well as the possible origin of this proposal.