Light dark matter from dark sector decay

Abstract

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

18 pages, 7 figures, version published in PLB

References in corpus (21)

• FeynRules 2.0 - A complete toolbox for tree-level phenomenology
• Dark Matter Search Results from a One Tonne$\times$Year Exposure of XENON1T
• Results from a search for dark matter in the complete LUX exposure
• CalcHEP 3.4 for collider physics within and beyond the Standard Model
• Dark Matter Results From 54-Ton-Day Exposure of PandaX-II Experiment
• The Search for Heavy Majorana Neutrinos
• micrOMEGAs3.1 : a program for calculating dark matter observables
• micrOMEGAs5.0 : freeze-in
• Search for dark matter, extra dimensions, and unparticles in monojet events in proton-proton collisions at sqrt(s) = 8 TeV
• Distinguishing seesaw models at LHC with multi-lepton signals
• Radiatively Induced Neutrino Masses and Large Higgs-Neutrino Couplings in the Standard Model with Majorana Fields
• Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector
• Prospects of Heavy Neutrino Searches at Future Lepton Colliders
• Neutrino Portals to Dark Matter
• Sterile Neutrino portal to Dark Matter II: Exact Dark symmetry
• A realistic model for Dark Matter interactions in the neutrino portal paradigm
• The Dark Side of the Littlest Seesaw: freeze-in, the two right-handed neutrino portal and leptogenesis-friendly fimpzillas
• Multipole analysis of IceCube data to search for dark matter accumulated in the Galactic halo
• Scrutinizing Right-Handed Neutrino Portal Dark Matter With Yukawa Effect
• Signature of heavy sterile neutrinos at CEPC
• Symmetry, dark matter and LHC phenomenology of the minimal $\nu$SM

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• CMB signature of non-thermal Dark Matter produced from self-interacting dark sector
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• Secluded Dark Matter in Gauged $B-L$ Model
• Spontaneously stabilised dark matter from a fermiophobic $U(1{)}^{\prime }$ gauge symmetry
• Collider search of light dark matter model with dark sector decay