2HDM singlet portal to dark matter

Abstract

Higgs portal models are the most minimal way to explain the relic abundance of the Universe. They add just a singlet that only couples to the Higgs through a single parameter that controls both the dark matter relic abundance and the direct detection cross-section. Unfortunately this scenario, either with scalar or fermionic dark matter, is almost ruled out by the latter. In this paper we analyze the Higgs-portal idea with fermionic dark matter in the context of a 2HDM. By disentangling the couplings responsible for the correct relic density from those that control the direct detection cross section we are able to open the parameter space and find wide regions consistent with both the observed relic density and all the current bounds.

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Correspondence to S. Robles.

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ArXiv ePrint: 2011.09101

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Cabrera, M.E., Casas, J.A., Delgado, A. et al. 2HDM singlet portal to dark matter. J. High Energ. Phys. 2021, 123 (2021). https://doi.org/10.1007/JHEP01(2021)123

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Keywords

  • Cosmology of Theories beyond the SM
  • Beyond Standard Model