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arXiv · 1209.2869

Thermal right-handed neutrino self-energy in the non-relativistic regime

M. Laine
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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.

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M. Laine. 2012-09-13. Thermal right-handed neutrino self-energy in the non-relativistic regime. https://arxiv.org/abs/1209.2869

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