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arXiv · hep-ph/9905242

Production of Massive Fermions at Preheating and Leptogenesis

G. F. Giudice·M. Peloso·A. Riotto·I. Tkachev
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Abstract

We present a complete computation of the inflaton decay into very massive fermions during preheating. We show that heavy fermions are produced very efficiently up to masses of order 10^{17}-10^{18} GeV; the accessible mass range is thus even broader than the one for heavy bosons. We apply our findings to the leptogenesis scenario, proposing a new version of it, in which the massive right-handed neutrinos, responsible for the generation of the baryon asymmetry, are produced during preheating. We also discuss other production mechanisms of right-handed neutrinos in the early Universe, identifying the neutrino mass parameters for which the observed baryon asymmetry is reproduced.

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G. F. Giudice, M. Peloso, A. Riotto, I. Tkachev. 1999-05-04. Production of Massive Fermions at Preheating and Leptogenesis. https://doi.org/10.1088/1126-6708%2F1999%2F08%2F014

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