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arXiv · 2101.00618

Freeze-in self-interacting dark matter in warped extra dimension

Shao-Ping Li·Xin Zhang
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Abstract

A classically scale-invariant scalar singlet can be a MeV-scale dark matter, with a feeble Higgs portal coupling at $\mathcal{O}(10^{-10})$. Besides, an $\mathcal{O}(0.1)$ self-interaction coupling could further serve to alleviate the small-scale problems in the Universe. We show that, such a dark matter candidate can naturally arise in the warped extra dimension, with the huge span of parameter space predicted well within $\mathcal{O}(1)$ fundamental parameters.

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Shao-Ping Li, Xin Zhang. 2021-08-14. Freeze-in self-interacting dark matter in warped extra dimension. https://doi.org/10.1016/j.physletb.2021.136566

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