Kim, Se Yong; Laine, Mikko Sakari (2019). Studies of a thermally averaged p-wave Sommerfeld factor. Physics letters. B, 795, pp. 469-474. Elsevier 10.1016/j.physletb.2019.06.053
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Thermal pair annihilation of heavy particles, such as dark matter or its co-annihilation partners, can be strongly influenced by attractive interactions. We investigate the case that pair annihilation proceeds through a velocity-suppressed p-wave operator, in the presence of an SU(3) gauge force. Making use of a non-relativistic effective theory, the thermal average of the pair-annihilation rate is estimated both through a resummed perturbative computation and through lattice simulation, in the range M/T ~ 10...30. Bound states contribute to the annihilation process and enhancement factors of up to ~100 can be found.
Item Type: |
Journal Article (Original Article) |
|---|---|
Division/Institute: |
10 Strategic Research Centers > Albert Einstein Center for Fundamental Physics (AEC) 08 Faculty of Science > Institute of Theoretical Physics |
UniBE Contributor: |
Kim, Se Yong, Laine, Mikko Sakari |
Subjects: |
500 Science > 530 Physics |
ISSN: |
0370-2693 |
Publisher: |
Elsevier |
Language: |
English |
Submitter: |
Esther Fiechter |
Date Deposited: |
07 Aug 2019 08:17 |
Last Modified: |
05 Dec 2022 15:30 |
Publisher DOI: |
10.1016/j.physletb.2019.06.053 |
ArXiv ID: |
1904.07882 |
BORIS DOI: |
10.7892/boris.132254 |
URI: |
https://boris.unibe.ch/id/eprint/132254 |
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