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Vector SIMP dark matter
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abstract
Strongly Interacting Massive Particles (SIMPs) have recently been proposed as light thermal dark matter relics. Here we consider an explicit realization of the SIMP mechanism in the form of vector SIMPs arising from an $SU(2)_X$ hidden gauge theory, where the accidental custodial symmetry protects the stability of the dark matter. We propose several ways of equilibrating the dark and visible sectors in this setup. In particular, we show that a light dark Higgs portal can maintain thermal equilibrium between the two sectors, as can a massive dark vector portal with its generalized Chern-Simons couplings to the vector SIMPs, all while remaining consistent with experimental constraints.
Forward citations
Cited by 4 Pith papers
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Pseudo-FIMP dark matter in presence of a SIMP
A feebly interacting dark matter particle can become a pseudo-FIMP by staying in equilibrium through conversion with a strongly self-interacting SIMP partner; the paper demonstrates this with coupled Boltzmann equatio...
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Vector dark matter with non-abelian kinetic mixing
A four-boson dark sector with one non-abelian kinetic-mixing operator can produce the observed dark-matter abundance by freeze-out, freeze-in, or 3-to-2 annihilations, with a dark-photon mediator almost degenerate wit...
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Two-Component Dark Matter with an SU(2) Dark Sector
A hidden SU(2) gauge sector that breaks to a Z3-protected two-component dark matter scenario is shown to have parameter points satisfying existing constraints.
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Super-Kamiokande Strongly Constrains Leptophilic Dark Matter Capture in the Sun
Super-Kamiokande data constrains the DM-electron scattering cross-section for leptophilic dark matter to ~4e-41 cm2 below 100 GeV, exceeding direct detection by over an order of magnitude.
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