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CP Asymmetry in Majorana Neutrino Decays

W. Buchmuller, M. Plumacher

hep-pharXiv:hep-ph/9710460

Abstract

We study CP asymmetries in lepton-number violating two-body scattering processes and show how they are related to CP asymmetries in the decays of intermediate massive Majorana neutrinos. Self-energy corrections, which do not contribute to CP asymmetries in two-body processes, induce CP violating couplings of the intermediate Majorana neutrinos to lepton-Higgs states. We briefly comment on the implications of these results for applications at finite temperature.

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