Grand Unification in Extra Dimensions and Proton Decay

Details Grand Unification in Extra Dimensions and Proton Decay Grand Unification in Extra Dimensions and Proton Decay

2001-05-30

arxiv.org/abs/hep-ph/0105321v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

Contribution to the proceedings of the XXXVIth Rencontres de Moriond, ``Electroweak Interactions and Unified Theories'', Les A

Scientific paper

We discuss baryon and lepton violation in the context of a simple 5-dimensional grand unified model, based on the orbifold S^1/(Z_2 x Z_2'). While gauge and Higgs degrees of freedom live in the bulk, matter is located on the boundaries of the space-time. We show that proton decay is naturally suppressed or even forbidden by suitable implementations of the parity symmetries in the matter sector. The corresponding mechanism does not affect the SU(5) description of fermion masses also including neutrinos.

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