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- W3100402298 abstract "The early universe could feature multiple reheating events, leading to jumps in the visible sector entropy density that dilute both particle asymmetries and the number density of frozen-out states. In fact, late time entropy jumps are usually required in models of Affleck-Dine baryogenesis, which typically produces an initial particle-antiparticle asymmetry that is much too large. An important consequence of late time dilution, is that a smaller dark matter annihilation cross section is needed to obtain the observed dark matter relic density. For cosmologies with high scale baryogenesis, followed by radiation-dominated dark matter freeze-out, we show that the perturbative unitarity mass bound on thermal relic dark matter is relaxed to $10^{10}$ GeV. We proceed to study superheavy asymmetric dark matter models, made possible by a sizable entropy injection after dark matter freeze-out, and identify how the Affleck-Dine mechanism would generate the baryon and dark asymmetries." @default.
- W3100402298 created "2020-11-23" @default.
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- W3100402298 date "2017-02-01" @default.
- W3100402298 modified "2023-10-16" @default.
- W3100402298 title "Superheavy thermal dark matter and primordial asymmetries" @default.
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- W3100402298 doi "https://doi.org/10.1007/jhep02(2017)119" @default.
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