Resonant SIMP dark matter

Abstract

We consider a resonant SIMP dark matter in models with two singlet complex scalar fields charged under a local dark $U(1{)}_D$. After the $U(1{)}_D$ is broken down to a $Z_5$ discrete subgroup, the lighter scalar field becomes a SIMP dark matter which has the enhanced $3\to 2$ annihilation cross section near the resonance of the heavier scalar field. Bounds on the SIMP self-scattering cross section and the relic density can be fulfilled at the same time for perturbative couplings of SIMP. A small gauge kinetic mixing between the SM hypercharge and dark gauge bosons can be used to make SIMP dark matter in kinetic equilibrium with the SM during freeze-out.

arXiv comment14 pages, 5 figures, Improved discussion on thermal-averaged annihilation cross section

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• A Practical and Consistent Parametrization of Dark Matter Self-Interactions
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• Lightening Gravity-Mediated Dark Matter
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• Implications of Two-component Dark Matter Induced by Forbidden Channels and Thermal Freeze-out
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• SIMPler realisation of Scalar Dark Matter
• Enhanced n-body annihilation of dark matter and its indirect signatures
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• Connecting between inflation and dark matter in models with gauged $Z_3$ symmetry
• Lectures on Physics Beyond the Standard Model
• Models for Self-resonant Dark Matter
• Semi-Annihilation of Fermionic Dark Matter
• Resonant Assisted Annihilation
• Reshuffled Strongly Interacting Massive Particle Dark Matter
• Dark mesons as self-interacting dark matter
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• Dark Matter Energy Deposition and Production from the Table-Top to the Cosmos
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