$SU(2)_L$ Doublet Vector Dark Matter from Gauge-Higgs Unification

Understand

A new vector dark matter (DM) scenario in the context of the gauge-Higgs unification (GHU) is proposed.

• The DM particle is identified with an electric-charge neutral component in an $SU(2)_L$ doublet vector field with the same quantum number as the Standard Model Higgs doublet.
• Since such an $SU(2)_L$ doublet vector field is incorporated in any models of the GHU scenario, it is always a primary and model-independent candidate for the DM in the scenario.
• The observed relic density is reproduced through a DM pair annihilations into the weak gauge bosons with a TeV-scale DM mass, which is nothing but the compactification scale of extra-dimensions.