In the scotogenic model with spontaneous lepton number breaking, the lightest heavy Majorana neutrino can be a sub-TeV dark matter particle with the correct relic abundance in three mass windows, while evading current direct-detection limits.
Singlet fermion dark matter and electroweak baryogenesis with radiative neutrino mass
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abstract
The model of radiative neutrino mass with dark matter proposed by one of us is extended to include a real singlet scalar field. There are then two important new consequences. One is the realistic possibility of having the lightest neutral singlet fermion (instead of the lightest neutral component of the dark scalar doublet) as the dark matter of the Universe. The other is a modification of the effective Higgs potential of the Standard Model, consistent with electroweak baryogenesis.
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Fermion Dark Matter and Radiative Neutrino Masses from Spontaneous Lepton Number Breaking
In the scotogenic model with spontaneous lepton number breaking, the lightest heavy Majorana neutrino can be a sub-TeV dark matter particle with the correct relic abundance in three mass windows, while evading current direct-detection limits.