Dark matter self-interactions from spin-2 mediatorsopen access
- Authors
- Kang, Yoo-Jin; Lee, Hyun Min
- Issue Date
- Oct-2021
- Publisher
- SPRINGER
- Citation
- EUROPEAN PHYSICAL JOURNAL C, v.81, no.10
- Journal Title
- EUROPEAN PHYSICAL JOURNAL C
- Volume
- 81
- Number
- 10
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/50351
- DOI
- 10.1140/epjc/s10052-021-09610-x
- ISSN
- 1434-6044
1434-6052
- Abstract
- We propose a new mechanism for rendering dark matter self-interacting in the presence of a massive spin-2 mediator. The derived Yukawa-type potential for dark matter is independent of the spins of dark matter in the leading order of the momentum expansion, so are the resulting non-perturbative effects for the dark matter self-scattering. We find that both the Born cross section and relatively mild resonance effects assist to make the self-scattering cross section velocity-dependent. We discuss how to evade the current indirect bounds on dark matter annihilations and show that the model is marginally compatible with perturbative unitarity in the ghost-free realization of the massive spin-2 particle.
- Files in This Item
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- Appears in
Collections - College of Natural Sciences > Department of Physics > 1. Journal Articles
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