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

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.

arXiv comment6 pages, 2 figures, v3:added explanations, matches version published in PLB

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Cited by in corpus (2)

• Scale Invariant FIMP Miracle
• SN1987A cooling due to Plasmon-Plasmon scattering in the Randall-Sundrum Model