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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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.
|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.|
|Classification Code:||PACS: 12.20.-m, 14.60.Ef, 95.30.Cq, 98.80.Cq|
|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.|
|Deposited By:||Ruth Sustaita|
|Deposited On:||13 Mar 2012 16:51|
|Last Modified:||26 Dec 2012 14:54|
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