Proton Decay and the Planck Scale

Details Proton Decay and the Planck Scale Proton Decay and the Planck Scale

Aug 2005

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005pasc.conf..399l&link_type=abstract

PASCOS 2004 Part I: Particles, Strings and Cosmology* Part II: Themes in Unification -- The Pran Nath Festschrift†. *,†Proceedin

Physics

Scientific paper

Even without Grand Unification, proton decay can be a powerful probe of physics at the highest energy scales. Supersymmetric theories with conserved R-parity contain Planck-suppressed dimension 5 operators that give important contributions to nucleon decay. These operators are likely controlled by flavor physics, which means current and near future proton decay experiments might yield clues about the fermion mass spectrum. I present a thorough analysis of nucleon partial life-times in supersymmetric one-flavon Froggatt-Nielsen models with a single U(1)X family symmetry which is responsible for the fermionic mass spectrum as well as forbidding R-parity violating interactions. Many of the models naturally lead to nucleon decay near present limits without any reference to grand unification.

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