Models for self-resonant dark matteropen access
- Authors
- Kim, Seong-Sik; Lee, Hyun Min; Zhu, Bin
- Issue Date
- May-2022
- Publisher
- Springer Science and Business Media Deutschland GmbH
- Keywords
- Cosmology of Theories BSM; Models for Dark Matter; Nonperturbative Effects; Particle Nature of Dark Matter
- Citation
- Journal of High Energy Physics, v.2022, no.5
- Journal Title
- Journal of High Energy Physics
- Volume
- 2022
- Number
- 5
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/58246
- DOI
- 10.1007/JHEP05(2022)148
- ISSN
- 1126-6708
1029-8479
- Abstract
- We consider a new mechanism for enhancing the self-scattering and annihilation cross sections for dark matter with multiple components but without a light mediator. The lighter dark matter component plays a role of the u-channel pole in the elastic co-scattering for dark matter, leading to a large self-scattering cross section and a Sommerfeld enhancement for semi-annihilation processes. Taking the effective theory approach for self-resonant dark matter, we present various combinations of multiple dark matter components with spins and parities, showing a u-channel pole in the co-scattering processes. Adopting dark photon and dark Higgs portals for self-resonant dark matter, we impose the relic density condition as well as indirect detection bounds on semi-annihilation channels with a Sommerfeld enhancement and discuss potential signals for direct detection experiments. © 2022, The Author(s).
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Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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