Neutral SU(2) Gauge Extension of the Standard Model and a Vector-Boson Dark-Matter Candidate

TL;DR

This paper proposes a model extending the Standard Model with a neutral SU(2)_N gauge group, predicting a vector-boson dark matter candidate and potential LHC signatures, with the candidate's mass estimated below 1 TeV.

Contribution

It introduces a novel SU(2)_N gauge extension that naturally produces a stable vector-boson dark matter candidate and predicts observable collider signatures.

Findings

Dark matter candidate X_1 has mass < 1 TeV.

Model predicts a Z' boson and Higgs signatures detectable at the LHC.

Conserved R parity stabilizes the vector-boson dark matter.

Abstract

If the standard model of particle interactions is extended to include a neutral SU(2)_N gauge factor, with SU(3)_C x SU(2)_L x U(1)_Y x SU(2)_N embedded in E_6 or [SU(3)]^3, a conserved generalized R parity may appear. As a result, we have the first example of a possible dark-matter candidate X_1 which is a non-Abelain vector boson. Using current data, its mass is predicted to be less than about 1 TeV. The associated Z' of this model, as well as some signatures of the Higgs sector, should then be observable at the LHC (Large Hadron Collider).