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 themodels 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.
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ArXiv ePrint: 1303.1452
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Pérez, P.F., Wise, M.B. Baryon asymmetry and dark matter through the vector-like portal. J. High Energ. Phys. 2013, 94 (2013). https://doi.org/10.1007/JHEP05(2013)094
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DOI: https://doi.org/10.1007/JHEP05(2013)094