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- W4310832366 abstract "Atomic dark matter is a simple but highly theoretically motivated possibility for an interacting dark sector that could constitute some or all of dark matter. We perform a comprehensive study of precision cosmological observables on minimal atomic dark matter, exploring for the first time the full parameter space of dark QED coupling and dark electron and proton masses $(alpha_{D}, m_{e_{D}}, m_{p_{D}})$ as well as the two cosmological parameters of aDM mass fraction $f_{D}$ and temperature ratio $xi$ at time of SM recombination. We also show how aDM can accommodate the $(H_0, S_8)$ tension from late-time measurements, leading to a better fit than $Lambda$CDM or $Lambda$CDM + dark radiation. Furthermore, including late-time measurements leads to closed contours of preferred $xi$ and dark hydrogen binding energy. The dark proton mass is seemingly unconstrained. Our results serve as an important new jumping-off point for future precision studies of atomic dark matter at non-linear and smaller scales." @default.
- W4310832366 created "2022-12-19" @default.
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- W4310832366 date "2022-12-05" @default.
- W4310832366 modified "2023-10-16" @default.
- W4310832366 title "Precision Cosmological Constraints on Atomic Dark Matter" @default.
- W4310832366 doi "https://doi.org/10.48550/arxiv.2212.02487" @default.
- W4310832366 hasPublicationYear "2022" @default.
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