Sterile neutrino dark matter in the super-weak model
Abstract
The super-weak model is a U(1) extension of the Standard Model. In addition to a mediator Z', a singlet scalar field is added to deal with the meta-stability of the SM vacuum, and right-handed neutrinos are introduced to account for the non-vanishing neutrino masses. We demonstrate that the lightest right-handed neutrino is a possible dark matter candidate with masses of O(10)~MeV via the resonant freeze-out scenario. The dark matter production is explored and the available parameter space is discussed from the point of view of various experiments and beyond SM aspects.
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