Fermion masses, neutrino oscillations, and proton decay in the light of SuperKamiokande

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  • 1 January 1999
Abstract
Within the framework of unified models, interactions responsible for neutrino masses can also provide mechanisms for nucleon instability. We discuss their implications concretely in the light of recent results on neutrino oscillation from the SuperKamiokande collaboration. We construct a predictive SO(10)-based framework that describes the masses and mixing of all quarks and leptons. An overconstrained global fit is obtained, that makes five successful predictions for quarks and charged leptons. The same description provides agreement with the SuperK results on atmospheric neutrinos and supports a small-angle MSW mechanism. We find that current limits on nucleon stability put significant stress on the framework. Thus improved searches in the decay channels predicted to dominate, p -> \nu-bar K^+ and p -> mu^+ K^0, will either turn up events, or force us outside this circle of ideas.

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