Czarnecki, Andrzej and Kamionkowski, Marc and Lee, Samuel K. and Melnikov, Kirill (2012) Charged-particle decay at finite temperature. Physical Review D, 85 (2). Art. No. 025018 . ISSN 0556-2821 http://resolver.caltech.edu/CaltechAUTHORS:20120306-065630130
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Abstract
Radiative corrections to the decay rate of charged fermions caused by the presence of a thermal bath of photons are calculated in the limit when temperatures are below the masses of all charged particles involved. The cancellation of finite-temperature infrared divergences in the decay rate is described in detail. Temperature-dependent radiative corrections to a two-body decay of a hypothetical charged fermion and to electroweak decays of a muon μ→eν_μν̅_e are given. We touch upon possible implications of these results for charged particles in the early Universe.
| Item Type: | Article | ||||||||||||
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| Additional Information: | © 2012 American Physical Society. Received 17 October 2011; published 26 January 2012. This research was supported at Alberta by Science and Engineering Research Canada (NSERC), at JHU by the NSF Grant No. PHY-0855365 and JHU startup funds, and at Caltech by DOE DE-FG03-92-ER40701, NASA NNX10AD04G, and the Gordon and Betty Moore Foundation. | ||||||||||||
| Group: | TAPIR | ||||||||||||
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| Classification Code: | PACS: 12.20.-m, 14.60.Ef, 95.30.Cq, 98.80.Cq | ||||||||||||
| Record Number: | CaltechAUTHORS:20120306-065630130 | ||||||||||||
| Persistent URL: | http://resolver.caltech.edu/CaltechAUTHORS:20120306-065630130 | ||||||||||||
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| Official Citation: | Charged-particle decay at finite temperature Andrzej Czarnecki, Marc Kamionkowski, Samuel K. Lee, and Kirill Melnikov Published 26 January 2012 (9 pages) 025018 | ||||||||||||
| Usage Policy: | No commercial reproduction, distribution, display or performance rights in this work are provided. | ||||||||||||
| ID Code: | 29580 | ||||||||||||
| Collection: | CaltechAUTHORS | ||||||||||||
| Deposited By: | Ruth Sustaita | ||||||||||||
| Deposited On: | 13 Mar 2012 16:51 | ||||||||||||
| Last Modified: | 26 Dec 2012 14:54 |
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