In the double Coy dark matter model, full phase-space Boltzmann evolution with conversions changes relic abundances by up to an order of magnitude per component and by more than 100% for the total in some parameter regions.
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We explore a class of dark matter models with two dark matter candidates, only one interacts with the standard model sector. One of the dark matter is thermalized with the assistance of the other stable particle. While both stable particles contribute to the total relic density only one can elastically scatter with nuclei, thus effectively reducing the direct detection rate.
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Conversions in two-component dark sectors: a phase space level analysis
In the double Coy dark matter model, full phase-space Boltzmann evolution with conversions changes relic abundances by up to an order of magnitude per component and by more than 100% for the total in some parameter regions.