Thermal right-handed neutrino self-energy in the non-relativistic regime
Abstract
Recently the issue of radiative corrections to leptogenesis has been raised. Considering the "strong washout" regime, in which OPE-techniques permit to streamline the setup, we report the thermal self-energy matrix of heavy right-handed neutrinos at NLO (resummed 2-loop level) in Standard Model couplings. The renormalized expression describes flavour transitions and "inclusive" decays of chemically decoupled right-handed neutrinos. Although CP-violation is not addressed, the result may find use in existing leptogenesis frameworks.
Date Issued
2012-09
Publication Type
Conference Item
Subject(s)
Language(s)
en
Additional Credits
Access(Rights)
open.access