Mechanism for thermal relic dark matter of strongly interacting massive particles
| Autor: | Tomer Volansky, Jay G. Wacker, Eric Kuflik, Yonit Hochberg |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Physics
Particle physics High Energy Physics::Lattice Hot dark matter High Energy Physics::Phenomenology Scalar field dark matter General Physics and Astronomy Strongly interacting massive particle Astrophysics::Cosmology and Extragalactic Astrophysics Hidden sector Mixed dark matter Warm dark matter Light dark matter Dark fluid |
| Zdroj: | Physical review letters. 113(17) |
| ISSN: | 1079-7114 |
| Popis: | We present a new paradigm for achieving thermal relic dark matter. The mechanism arises when a nearly secluded dark sector is thermalized with the standard model after reheating. The freeze-out process is a number-changing 3→2 annihilation of strongly interacting massive particles (SIMPs) in the dark sector, and points to sub-GeV dark matter. The couplings to the visible sector, necessary for maintaining thermal equilibrium with the standard model, imply measurable signals that will allow coverage of a significant part of the parameter space with future indirect- and direct-detection experiments and via direct production of dark matter at colliders. Moreover, 3→2 annihilations typically predict sizable 2→2 self-interactions which naturally address the "core versus cusp" and "too-big-to-fail" small-scale structure formation problems. |
| Databáze: | OpenAIRE |
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