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Leptogenesis in Inflaton Decay

T. Asaka·K. Hamaguchi·M. Kawasaki·T. Yanagida
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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 $T_R$ of inflation may be taken as low as $T_R \simeq 10^8$ GeV to avoid the cosmological gravitino problem.

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T. Asaka, K. Hamaguchi, M. Kawasaki, T. Yanagida. 1999-06-15. Leptogenesis in Inflaton Decay. https://doi.org/10.1016/s0370-2693(99)01020-5

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