Baryogenesis and Dark Matter with Vector-like Fermions
arXiv:1307.8011 · doi:10.1007/JHEP10(2013)176
Abstract
We show that vector-like fermions can act as the dark matter candidate in the universe whilst also playing a crucial role in electroweak baryogenesis through contributing to the barrier in the one-loop thermal scalar potential. In order for the new fermions to give rise to a strong first order phase transition, we show that one requires rather large Yukawa couplings in the new sector, which are strongly constrained by electroweak precision tests and perturbativity. Strong couplings between the dark matter candidate and the Higgs boson intuitively lead to small values of the relic density and problems with dark matter direct detection bounds. Nevertheless, when considering the most general realisation of the model, we find regions in the parameter space that respect all current constraints and may explain both mysteries simultaneously.
21 pages, 11 figures, references added, includes discussion of vacuum stability, matches published version
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Cited by in corpus (21)
- Vectorlike leptons at the Large Hadron Collider
- Survey of vector-like fermion extensions of the Standard Model and their phenomenological implications
- Prospects for vectorlike leptons at future proton-proton colliders
- Electroweak baryogenesis from a dark sector
- Minimal Vector-like leptonic Dark Matter and Signatures at the LHC
- Electroweak Baryogenesis and Dark Matter via a Pseudoscalar vs. Scalar
- Dark Matter and Collider Studies in the Left-Right Symmetric Model with Vector-Like Leptons
- Portals into Higgs vacuum stability
- The minimal fermionic model of electroweak baryogenesis
- Electroweak Baryogenesis with Vector-like Leptons and Scalar Singlets
- Dark Matter in the Higgs Triplet Model
- Electroweak Baryogenesis, Electric Dipole Moments, and Higgs Diphoton Decays
- Virtual signatures of dark sectors in Higgs couplings
- Majorana Dark matter with B+L gauge symmetry
- MSSM4G: Reviving Bino Dark Matter with Vector-like 4th Generation Particles
- Electroweak phase transition triggered by fermion sector
- Anomalous neutral gauge boson interactions and simplified models
- The Two Scales of New Physics in Higgs Couplings
- Electroweak phase transition in a model with gauged lepton number
- Probing intermediate scale Froggatt-Nielsen models at future gravitational wave observatories
- The Two Scales of New Physics in Loop-Induced Higgs Couplings