Proton decay and fermion masses in supersymmetric grand unified theories

Details Proton decay and fermion masses in supersymmetric grand unified theories Proton decay and fermion masses in supersymmetric grand unified theories

2003-04-04

arxiv.org/abs/hep-ph/0304051v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Invited talk at '20 years of SUGRA', Boston, March 2003

Scientific paper

We briefly review the issues of proton decay and fermion masses and mixings in minimal supersymmetric grand unified theories. We argue that minimal SU(5), although tightly constrained by proton decay data, is still not ruled out. However, we outline the advantages of SO(10) unification, in particular in the model with renormalizable see-saw mechanism and its remarkable predictions of (a) exact R-parity at low energies, (b) large atmospheric neutrino angle as a consequence of b-tau unification and (c) 1-3 leptonic mixing angle close to its upper limit.

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