Cosmic abundances of SIMP dark matter

Abstract

Thermal production of light dark matter with sub-GeV scale mass can be attributed to $3\to 2$ self-annihilation processes. We consider the thermal average for annihilation cross sections of dark matter at $3\to 2$ and general higher-order interactions. A correct thermal average for initial dark matter particles is important, in particular, for annihilation cross sections with overall velocity dependence and/or resonance poles. We apply our general results to benchmark models for SIMP dark matter and discuss the effects of the resonance pole in determining the relic density.

21 pages, 6 figures, Version to appear in Journal of High Energy Physics

References in corpus (5)

• WIMP and SIMP Dark Matter from the Spontaneous Breaking of a Global Group
• Simply split SIMPs
• Enabling Forbidden Dark Matter
• Light Dark Matter through Assisted Annihilation
• On thermal production of self-interacting dark matter

Cited by in corpus (50)

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• Self-interacting Dark Matter from Primordial Black Holes
• Phenomenology of ELDER Dark Matter
• Velocity Dependence from Resonant Self-Interacting Dark Matter
• Scalar singlet dark matter in non-standard cosmologies
• Strongly interacting dark sectors in the early Universe and at the LHC through a simplified portal
• Phenomenology of Self-Interacting Dark Matter in a Matter-Dominated Universe
• Resolving phenomenological problems with strongly-interacting-massive-particle models with dark vector resonances
• Vector SIMP dark matter
• Casting a graph net to catch dark showers
• A Practical and Consistent Parametrization of Dark Matter Self-Interactions
• Resonance enhancement of dark matter interactions: the case for early kinetic decoupling and velocity dependent resonance width
• Cannibal Dark Matter and Large Scale Structure
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• Vector SIMP dark matter with approximate custodial symmetry
• Dark matter direct detection of a fermionic singlet at one loop
• Boosting Freeze-in through Thermalization
• Lightening Gravity-Mediated Dark Matter
• Scalar and Fermion Two-component SIMP Dark Matter with an Accidental ${\mathbb{Z}}_4^{}$ Symmetry
• Exothermic Dark Matter for XENON1T Excess
• Non-thermal production of Dark Matter after Inflation
• A Radiative Neutrino Mass Model with SIMP Dark Matter
• Axion-like particle assisted strongly interacting massive particle
• Hot Leptogenesis from Thermal Dark Matter
• A multi-component SIMP model with $U(1{)}_X\to Z_2\times Z_3$
• SIMPler realisation of Scalar Dark Matter
• A new mechanism of sterile neutrino dark matter production
• Unitarity Bound on Dark Matter in Low-temperature Reheating Scenarios
• An Exceptional G(2) Extension of the Standard Model from the Correspondence with Cayley-Dickson Algebras Automorphism Groups
• Dark matter relic density in strongly interacting dark sectors with light vector mesons
• Perturbative Unitarity of Strongly Interacting Massive Particle Models
• Enhanced n-body annihilation of dark matter and its indirect signatures
• Connecting between inflation and dark matter in models with gauged $Z_3$ symmetry
• WIMPs in Dilatonic Einstein Gauss-Bonnet Cosmology
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• Semi-Annihilation of Fermionic Dark Matter
• Resonant Assisted Annihilation
• Gauge-Independent Approach to Resonant Dark Matter Annihilation
• Models for Self-resonant Dark Matter
• Mechanism for dark matter depopulation
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• Reshuffled Strongly Interacting Massive Particle Dark Matter
• Dark mesons as self-interacting dark matter
• The Resurgence of the G(2) Group for the Strong Sector and the Emergence of Dark Matter
• SIMP dark matter and its cosmic abundances