CP Asymmetry in Majorana Neutrino Decays
arXiv:hep-ph/9710460 · doi:10.1016/S0370-2693(97)01548-7
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.
latex2e, 14 pages, 4 figures, extended version, conclusion changed