Light dark matter from dark sector decay

• DOI: 10.1016/j.physletb.2021.136118
• Publication Date: 2021-02-05T10:31:48Z
• Authors: Yu Cheng; Wei Liao
• Keywords: Light dark matter; Hidden sector; Warm dark matter

We study the possibility that light dark matter can be produced with right relic density by decay of other sector particles. this in a model right-handed neutrinos, singlet scalar and fermion. The heavier gives rise to lighter fermion which serves as candidate. show scalar. find mass GeV scale or MeV interaction is very weak. have GeV-TeV weak interactions Standard Model (SM) So, scenario, has an SM much weaker than interaction, but still SM.