Strongly interacting massive particles through the axion portal
Dark matter could be a thermal relic comprised of strongly interacting massive particles (SIMPs), where 3 → 2 interactions set the relic abundance. Such interactions generically arise in theories of chiral symmetry breaking via the Wess-Zumino-Witten term. In this work, we show that an axionlike par...
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| Veröffentlicht in: | Physical review. D 2018-12, Vol.98 (11), p.1, Article 115031 |
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| container_title | Physical review. D |
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| creator | Hochberg, Yonit Kuflik, Eric McGehee, Robert Murayama, Hitoshi Schutz, Katelin |
| description | Dark matter could be a thermal relic comprised of strongly interacting massive particles (SIMPs), where 3 → 2 interactions set the relic abundance. Such interactions generically arise in theories of chiral symmetry breaking via the Wess-Zumino-Witten term. In this work, we show that an axionlike particle can successfully maintain kinetic equilibrium between the dark matter and the visible sector, allowing the requisite entropy transfer that is crucial for SIMPs to be a cold dark matter candidate. Constraints on this scenario arise from beam dump and collider experiments, from the cosmic microwave background, and from supernovae. We find a viable parameter space when the axionlike particle is close in mass to the SIMP dark matter, with strong-scale masses of order a few hundred MeV. Many planned experiments are set to probe the parameter space in the near future. |
| doi_str_mv | 10.1103/PhysRevD.98.115031 |
| format | Article |
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| language | eng |
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| source | American Physical Society Journals |
| subjects | Big Bang theory Broken symmetry Cold dark matter Cosmic microwave background Dark matter Parameters PHYSICS OF ELEMENTARY PARTICLES AND FIELDS Supernovae |
| title | Strongly interacting massive particles through the axion portal |
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