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

K. S. Babu, Jogesh C. Pati, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

216 Scopus citations

Abstract

Within the framework of unified gauge 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 typically supports a small-angle MSW mechanism. We find that current limits on nucleon stability put significant stress on the framework. Further, a distinctive feature of the SO(10) model developed here is the likely prominence of the μ+K0 mode in addition to the ν̄K+ mode of proton decay. Thus improved searches in these channels for proton decay will either turn up events, or force us outside this circle of ideas.

Original languageEnglish (US)
Pages (from-to)33-91
Number of pages59
JournalNuclear Physics B
Volume566
Issue number1-2
DOIs
StatePublished - Jan 31 2000
Externally publishedYes

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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