Baryon Asymmetry and Dark Matter Through the Vector-Like Portal

Abstract

A possible connection between the cosmological baryon asymmetry, dark matter and vector-like fermions is investigated. In this scenario an asymmetry generated through baryogenesis or leptogenesis (in the vector-like matter sector) connects the baryon asymmetry to the dark matter density. We present explicit renormalizable models where this connection occurs. These models have asymmetric dark matter and a significant invisible Higgs decay width to dark matter particles is possible. We refer to this type of scenario as the vector-like portal. In some asymmetric dark matter models there are potential naturalness issues for the low energy effective theory. We address that issue in the models we consider by starting with a Lagrangian that is the most general renormalizable one consistent with the gauge (and discrete) symmetries and showing the low energy effective theory automatically has the required form as a consequence of the symmetries of the full theory. We show that the mass of the dark matter candidate is predicted in these scenarios.

to appear in Journal of High Energy Physics

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• Implications of the diphoton excess on Left-Right models and gauge unification
• Signatures from Scalar Dark Matter with a Vector-like Quark Mediator
• Flooded Dark Matter and S Level Rise
• Bremsstrahlung and Gamma Ray Lines in 3 Scenarios of Dark Matter Annihilation
• Leptobaryons as Majorana Dark Matter
• Diphoton excess at 750 GeV and LHC constraints in models with vector-like particles
• Cogenesis in a universe with vanishing $B-L$ within a gauged $U(1{)}_x$ extension
• Baryogenesis and Dark Matter with Vector-like Fermions
• Baryogenesis from neutron-dark matter oscillations
• Baryon Asymmetry, Dark Matter and Local Baryon Number
• Common origin of baryon asymmetry, dark matter and neutrino mass
• Electroweak Baryogenesis, Electric Dipole Moments, and Higgs Diphoton Decays
• Radiative corrections to vectorlike portal dark matter
• Asymmetric accidental composite dark matter
• Selfish Dark Matter
• Dark matter physics, flavor physics and LHC constraints in the dark matter model with a bottom partner
• Direct signals from electroweak singlets through the Higgs portal
• Vacuum Structure of an Extended Standard Model with $U(1{)}_D$ Symmetry
• Machine learning study on single production of a singlet vectorlike lepton at the Large Hadron Collider