6533b834fe1ef96bd129e280
RESEARCH PRODUCT
A minimal model for ${\rm SU}(N)$ vector dark matter
Kimmo TuominenStefano Di Chiarasubject
PhysicsParticle physicsNuclear and High Energy PhysicsHiggs Physicsta114010308 nuclear & particles physicsElectroweak interactionDark matterHigh Energy Physics::PhenomenologyFOS: Physical sciencesHiggs physics01 natural sciences114 Physical sciencesStandard ModelMinimal modelHidden sectorHigh Energy Physics - PhenomenologyHigh Energy Physics - Phenomenology (hep-ph)Gauge group0103 physical sciencesBeyond Standard ModelHiggs bosonRADIATIVE-CORRECTIONSSymmetry breaking010306 general physicsdescription
We study an extension of the Standard Model featuring a hidden sector that consists of a new scalar charged under a new SU$(N)_D$ gauge group, singlet under all Standard Model gauge interactions, and coupled with the Standard Model only via a Higgs portal. We assume that the theory is classically conformal, with electroweak symmetry breaking dynamically induced via the Coleman-Weinberg mechanism operating in the hidden sector. Due to the symmetry breaking pattern, the SU$(N)_D$ gauge group is completely Higgsed and the resulting massive vectors of the hidden sector constitute a stable dark matter candidate. We perform a thorough scan over the parameter space of the model at different values of $N=2$, $3$, and $4$, and investigate the phenomenological constraints. We find that $N=2,3$ provide the most appealing model setting in light of present data from colliders and dark matter direct search experiments. We expect a heavy Higgs to be discovered at LHC by the end of Run II or the $N=3$ model to be ruled out.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2015-11-26 |