Leptogenesis in Inflaton Decay
Abstract
We study a leptogenesis via decays of heavy Majorana neutrinos produced non-thermally in inflaton decays. We find that this scenario is fully consistent with existing supersymmetric inflation models such as for topological or for hybrid inflation and the Froggatt-Nielsen mechanism generating hierarchies in quark and lepton mass matrices. The reheating temperature TR of inflation may be taken as low as TR 108 GeV to avoid the cosmological gravitino problem.
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