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arXiv · hep-ph/9907562

Leptogenesis with Dirac Neutrinos

Karin Dick·Manfred Lindner·Michael Ratz·David Wright
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Abstract

We describe a "neutrinogenesis" mechanism whereby, in the presence of right-handed neutrinos with sufficiently small pure Dirac masses, (B+L)-violating sphaleron processes create the baryon asymmetry of the Universe, even when B=L=0 initially. It is shown that the resulting neutrino mass constraints are easily fulfilled by the neutrino masses suggested by current experiments. We present a simple toy model which uses this mechanism to produce the observed baryon asymmetry of the Universe. (PostScript Errors corrected in latest Version).

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Karin Dick, Manfred Lindner, Michael Ratz, David Wright. 2000-03-14. Leptogenesis with Dirac Neutrinos. https://doi.org/10.1103/physrevlett.84.4039

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