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High-temperature limit of Breit-Wheeler pair production in a black-body field

Abstract:
This paper presents an analytic expression for the high-temperature limit of Breit–Wheeler pair production in a black-body field to lowest order in perturbation theory, of interest in early-universe cosmology. The limit is found to be a good approximation for temperatures above about three times the electron rest energy. It is also found that coupling to low-energy processes remains important at arbitrarily high temperatures, due to the exchange of a low-energy virtual fermion near the mass shell. This appears mathematically in the rate as a logarithmic factor of the photon temperature divided by the electron rest mass.
Publication status:
Published
Peer review status:
Peer reviewed

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Publisher copy:
10.1016/j.rinp.2022.105917

Authors


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Role:
Author
ORCID:
0000-0003-4649-9620
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Institution:
University of Oxford
Division:
MPLS
Department:
Physics
Sub department:
Atomic & Laser Physics
Role:
Author
ORCID:
0000-0001-6808-6355


Publisher:
Elsevier
Journal:
Results in Physics More from this journal
Volume:
41
Article number:
105917
Publication date:
2022-08-19
Acceptance date:
2022-08-13
DOI:
EISSN:
2211-3797


Language:
English
Keywords:
Pubs id:
1275271
Local pid:
pubs:1275271
Deposit date:
2022-08-23

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