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arXiv · 1003.2313

Sub-eV scalar dark matter through the super-renormalizable Higgs portal

Federico Piazza·Maxim Pospelov
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Abstract

The Higgs portal of the Standard Model provides the opportunity for coupling to a very light scalar field $ϕ$ via the super-renormalizable operator $ϕ(H^\dagger H)$. This allows for the existence of a very light scalar dark matter that has coherent interaction with the Standard Model particles and yet has its mass protected against radiative corrections. We analyze ensuing constraints from the fifth-force measurements, along with the cosmological requirements. We find that the detectable level of the fifth-force can be achieved in models with low inflationary scales, and certain amount of fine-tuning in the initial deviation of $ϕ$ from its minimum.

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Federico Piazza, Maxim Pospelov. 2010-04-07. Sub-eV scalar dark matter through the super-renormalizable Higgs portal. https://doi.org/10.1103/physrevd.82.043533

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