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The super-weak model is a U(1) extension of the Standard Model. In additionto a mediator $Z'$, a singlet scalar field $\chi$ is added to deal with themeta-stability of the SM vacuum, and right-handed neutrinos are introduced toaccount for the non-vanishing neutrino masses. We demonstrate that the lightestright-handed neutrino is a possible dark matter candidate with masses of$\mathcal{O}(10)~\mathrm{MeV}$ via the resonant freeze-out scenario. The darkmatter production is explored and the available parameter space is discussedfrom the point of view of various experiments and beyond SM aspects.

Sterile neutrino dark matter in the super-weak model