Leptogenesis in the Light of Super-Kamiokande Data and a Realistic String Model

Details Leptogenesis in the Light of Super-Kamiokande Data and a Realistic String Model Leptogenesis in the Light of Super-Kamiokande Data and a Realistic String Model

1999-02-16

arxiv.org/abs/hep-ph/9902364v1

Phys.Lett.B452:87-97,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 1 figure

Scientific paper

10.1016/S0370-2693(99)00268-3

We discuss leptogenesis in the light of indications of neutrino masses and mixings from Super-Kamiokande and other data on atmospheric neutrinos, as well as the solar neutrino deficit. Neutrino masses and mixings consistent with these data may produce in a natural and generic way a lepton asymmetry that is suffient to provide the observed baryon asymmetry, after processing via non-perturbative electroweak effects. We illustrate this discussion in the framework of the string-derived flipped SU(5) model, using particle assignments and choices of vacuum parameters that are known to give realistic masses to quarks and charged leptons. We display one scenario for neutrino masses that also accommodates leptogenesis.

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