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Leptogenesis and Low Energy CP Violation

G. C. Branco·T. Morozumi·B. M. Nobre·M. N. Rebelo
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Abstract

We discuss the possibility of relating the size and sign of the observed baryon asymmetry of the universe to CP violation observable at low energies, in a framework where the observed baryon asymmetry is produced by leptogenesis through out of equilibrium decay of heavy Majorana neutrinos. We have shown that although in general such a connection cannot be established, there are specific frameworks where a link does exist. Furthermore, we identify the CP violating phases relevant to leptogenesis and those relevant for low energy CP violation and build weak basis invariant conditions for CP conservation.

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G. C. Branco, T. Morozumi, B. M. Nobre, M. N. Rebelo. 2002-04-16. Leptogenesis and Low Energy CP Violation. https://arxiv.org/abs/hep-ph/0204189

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