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- W3106011036 abstract "We study production of dark matter (DM) in models with a non-standard expansion history. We consider both freeze-out and freeze-in mechanisms for producing the observed DM abundance in a model where the DM consists of scalar singlet particles coupled to the Standard Model sector via the Higgs portal. We show that a non-standard expansion phase can lead to a significant change in the DM abundance and therefore to observational ramifications. For example, for DM freeze-in the required portal coupling can be much larger, whereas for DM freeze-out much smaller values become allowed. We evaluate the relevant constraints and discuss prospects for direct detection of such DM." @default.
- W3106011036 created "2020-11-23" @default.
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- W3106011036 date "2019-01-01" @default.
- W3106011036 modified "2023-10-12" @default.
- W3106011036 title "Scalar singlet dark matter in non-standard cosmologies" @default.
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- W3106011036 doi "https://doi.org/10.1140/epjc/s10052-019-6550-9" @default.
- W3106011036 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/6383953" @default.
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- W3106011036 hasPublicationYear "2019" @default.
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