Studies of a thermally averaged p-wave Sommerfeld factor

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 and 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:

22 Oct 2019 16:51

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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