Light cold dark matter from non-thermal decay
- 주제(키워드) Axion , Dark matter , Non-thermal production , Q-ball
- 등재 SCOPUS
- OA유형 All Open Access; Gold Open Access; Green Open Access
- 발행기관 Elsevier B.V.
- 발행년도 2023
- 총서유형 Journal
- URI http://www.dcollection.net/handler/ewha/000000211779
- 본문언어 영어
- Published As https://doi.org/10.1016/j.physletb.2023.138126
초록/요약
We investigate the mass range and the corresponding free-streaming length scale of dark matter produced non-thermally from decay of heavy objects which can be either dominant or sub-dominant at the moment of decay. We show that the resulting dark matter could be very light well below keV scale with a free-streaming length satisfying the Lyman-α constraints. We demonstrate two explicit examples for such light cold dark matter. © 2023 The Author(s)
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