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사범대학
과학교육과
Journal papers
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Light cold dark matter from non-thermal decay
Title
Light cold dark matter from non-thermal decay
Authors
Choi
;
Ki-Young
;
Gong
;
Jinn-Ouk
;
Joh
;
Junghoon
;
Park
;
Wan-Il
;
Seto
;
Osamu
Ewha Authors
공진욱
SCOPUS Author ID
공진욱
Issue Date
2023
Journal Title
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics
ISSN
0370-2693
Citation
Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics vol. 845
Keywords
Axion
;
Dark matter
;
Non-thermal production
;
Q-ball
Publisher
Elsevier B.V.
Indexed
SCIE; SCOPUS
Document Type
Article
Abstract
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)
DOI
10.1016/j.physletb.2023.138126
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