WIMP Dark Matter and Baryogenesis

Abstract

In the present universe visible and dark matter contribute comparable energy density although they have different properties. This coincidence can be elegantly explained if the dark matter relic density, originating from a dark matter asymmetry, is fully determined by the baryon asymmetry. Thus the dark matter mass is not arbitrary, rather becomes predictive. We realize this scenario in baryon(lepton) number conserving models where two or more neutral singlet scalars decay into two or three baryonic(leptonic) dark matter scalars, and also decay into quarks(leptons) through other on-shell and/or off-shell exotic scalar bilinears. The produced baryon(lepton) asymmetries in the dark matter scalar and in the standard model quarks(leptons) are thus equal and opposite. The dark matter mass can be predicted in a range from a few GeV to a few TeV depending on the baryon(lepton) numbers of the decaying scalars and the dark matter scalar. The dark matter scalar can interact with the visible matter through the exchange of the standard model Higgs boson, opening a window for the dark matter direct detection experiments. These models also provide testable predictions in the searches for the exotic scalar bilinears at LHC.

5 pages, 1 figure

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• Aidnogenesis via Leptogenesis and Dark Sphalerons
• Relic Abundance of Asymmetric Dark Matter
• Bounds on self-interacting fermion dark matter from observations of old neutron stars
• Asymmetric Dark Matter and Dark Radiation
• Oscillating Asymmetric Dark Matter
• Consequences of DM/antiDM Oscillations for Asymmetric WIMP Dark Matter
• Closing in on Asymmetric Dark Matter I: Model independent limits for interactions with quarks
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• Exothermic Double-Disk Dark Matter
• Searching for Low Mass Dark Portal at the LHC
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• Thermal Dark Matter from a Confining Sector
• Compensated Isocurvature Perturbations and the Cosmic Microwave Background
• Co-genesis of Matter and Dark Matter with Vector-like Fourth Generation Leptons
• Emergent Dark Matter, Baryon, and Lepton Numbers
• Asymmetric Dark Matter via Spontaneous Co-Genesis
• Phenomenology of WIMPy baryogenesis models
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• Affleck-Dine dynamics and the dark sector of pangenesis
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• From Dirac neutrino masses to baryonic and dark matter asymmetries
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• A particle dark matter footprint on the first generation of stars
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• Twin Cogenesis
• Asymmetric Dark Matter
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• Dark matter imprint on ${}^8$B neutrino spectrum
• An SO(10) \times SO(10)' model for common origin of neutrino masses, ordinary and dark matter-antimatter asymmetries
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• Quark Seesaw, Dark $U(1)$ symmetry and Baryon-Dark Matter Coincidence
• Generation of WIMP Miracle-like Densities of Baryons and Dark Matter
• Unified origin for visible and dark matter in a baryon-symmetric universe from a first-order phase transition
• Asymmetric dark matter from semi-annihilation: unitarity constraints and long-lived final states
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