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- W4386700963 abstract "We propose a scenario that explains the comparable abundances of dark matter (DM) and baryons without any coincidence in the corresponding particle masses. Here, DM corresponds to heavy “dark baryons” in a hidden MSSM-like dark sector, where the supersymmetry breaking scale can be several orders of magnitude larger than in the visible sector. In both sectors a baryon asymmetry is generated via the Affleck-Dine mechanism, and the smaller dark baryon-to-entropy ratio partially compensates the larger dark baryon masses to give similar densities in the two sectors. The large mass hierarchy also naturally results in an asymmetric reheating of these sequestered sectors. Moreover, this scenario predicts uncorrelated DM and baryon isocurvature perturbations." @default.
- W4386700963 created "2023-09-14" @default.
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- W4386700963 date "2023-11-01" @default.
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- W4386700963 title "Comparable dark matter and baryon abundances with a heavy dark sector" @default.
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- W4386700963 doi "https://doi.org/10.1016/j.physletb.2023.138178" @default.
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