Realistic Dirac Leptogenesis

Abstract

We present a model of leptogenesis that preserves lepton number. The model maintains the important feature of more traditional leptogenesis scenarios: the decaying particles that provide the CP violation necessary for baryogenesis also provide the explanation for the smallness of the neutrino Yukawa couplings. This model clearly demonstrates that, contrary to conventional wisdom, neutrinos need not be Majorana in nature in order to help explain the baryon asymmetry of the universe.

4 pages, 1 figure. Uses RevTex. Reference Added. Minor changes in wording

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• Renormalization Group Evolution of Dirac Neutrino Masses
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