1996/05/20 by L. Covi, E. Roulet, F. Vissani · 1 citation
Physics and Astronomy · #astro-ph #hep-ph
paper · pdf · doi:10.1016/0370-2693(96)00817-9
published as Phys.Lett. B384 (1996) 169-174 · latex, 10 p. + 2 ps figs. (a missprint eliminated)
arxiv created 1996/05/20 · arxiv updated 2009/11/30
We compute the CP violation in the decays of heavy electroweak singlet neutrinos, arising from both the one--loop vertex corrections and the wave function mixing. We extend the computation to the supersymmetric version of the model and discuss the implications for the generation of a lepton number asymmetry by the out of equilibrium decay of the heavy (s)neutrinos in the early Universe, to be reprocessed later in the observed baryon excess by anomalous electroweak processes.