Self-Interacting Dark Matter through the Higgs Portal

Abstract

We study self-interacting dark matter coupled to the Standard Model via the Higgs portal. We consider a scenario where dark matter is a thermal relic with strong enough self interactions that can alleviate the problems of collisionless cold dark matter. We study constraints from direct detection searches, the LHC, and Big Bang nucleosynthesis. We show that the tension between these constraints and the need for sufficiently strong self-interactions with light mediators can be alleviated by coupling the mediator to either active or sterile neutrinos. Future direct detection data offers great potential and can be used to find evidence of a light mediator and verify that dark matter scatters via long-range self-interactions.

7 pages, 2 figures

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Cited by in corpus (22)

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• Thermal Dark Matter From A Highly Decoupled Sector
• The surprising accuracy of isothermal Jeans modelling of self-interacting dark matter density profiles
• Signals from dark atom formation in halos
• Higgs portals to pulsar collapse
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• Boosted Self-Interacting Dark Matter and XENON1T Excess
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• Thick Branes in Extra Dimensions and Suppressed Dark Couplings
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• Using atomic clocks to detect local dark matter halos
• Imprints of MeV Scale Hidden Dark Sector at Planck Data
• Gravitational waves from a curvature-induced phase transition of a Higgs-portal dark matter sector
• Singlet-Doublet Self-interacting Dark Matter and Radiative Neutrino Mass