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Leptogenesis-MNS Link in Unified Models with Natural Neutrino Mass Hierarchy

S. F. King
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Abstract

We discuss the relation between leptogenesis and the MNS phases in the class of see-saw models called light sequential dominance in which the right-handed neutrinos dominate sequentially, with the dominant right-handed neutrino being the lightest one. The heaviest right-handed neutrino then decouples, leaving effectively two right-handed neutrinos. Light sequential dominance is motivated by SO(10) models which predict three right-handed neutrinos. With an approximate Yukawa texture zero in the 11 position there are only two see-saw phases which are simply related to the MNS phase measurable at a neutrino factory and the leptogenesis phase. The leptogenesis phase is predicted to be equal to the neutrinoless double beta decay phase.

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S. F. King. 2003-05-14. Leptogenesis-MNS Link in Unified Models with Natural Neutrino Mass Hierarchy. https://doi.org/10.1103/physrevd.67.113010

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