Proton decay and fermion masses in supersymmetric grand unified theories

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

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/42384

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/0304051
 http://arxiv.org/abs/hep-ph/0304051

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arXiv