“School of Particles”
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| Paper IPM / Particles / 15241 |
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In the multi-component conï¬gurations of dark matter phenomenology, we propose a minimal two-component conï¬guration which is an extension of the Standard Model with only three new ï¬elds; one scalar and one fermion interact with the thermal soup through Higgs portal, mediated by the other scalar in such a way that the stabilities of dark matter candidates are made simultaneously by an explicit Z2 symmetry. Against the most common freeze-out framework, we look for dark matter particle signatures in the freeze-in scenario by evaluating the relic density and detection signals. A simple distinguishing feature of the model is the lack of dark matter conversion, so the dark matter components act individually and the model can be adapted entirely to both singlet scalar and singlet fermionic models, separately. We ï¬nd dark matter self-interaction as the most promising approach to probe such feeble models. Although the scalar component satisï¬es this constraint, the fermionic one refuses it even in the resonant region.
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