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- W4300383542 abstract "We show that decoupled hidden sectors can have observational consequences. As a representative model example, we study dark matter production in the Higgs portal model with one real singlet scalar $s$ coupled to the Standard Model Higgs via $lambda_{rm hs}Phi^daggerPhi s^2$ and demonstrate how the combination of non-observation of cosmological isocurvature perturbations and astrophysical limits on dark matter self-interactions imply stringent bounds on the magnitude of the scalar self-coupling $lambda_{rm s}s^4$. For example, for dark matter mass $m_{rm s}=10$ MeV and Hubble scale during cosmic inflation $H_*=10^{12}$ GeV, we find $10^{-4}lesssim lambda_{rm s}lesssim 0.2$." @default.
- W4300383542 created "2022-10-03" @default.
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- W4300383542 date "2016-11-15" @default.
- W4300383542 modified "2023-09-27" @default.
- W4300383542 title "Observational Properties of Feebly Coupled Dark Matter" @default.
- W4300383542 doi "https://doi.org/10.48550/arxiv.1611.04951" @default.
- W4300383542 hasPublicationYear "2016" @default.
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