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arxiv: hep-ph/9605319 · v2 · submitted 1996-05-15 · ✦ hep-ph · astro-ph

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CP violating decays in leptogenesis scenarios

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classification ✦ hep-ph astro-ph
keywords decayselectroweakheavyneutrinosanomalousarisingasymmetrybaryon
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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.

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