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SU(5) grand unification in extra dimensions and proton decay

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Altarelli, Guido, Feruglio, Ferruccio·2001·Physics Letters B

Abstract

We analyse proton decay in the context of simple supersymmetric SU(5) grand unified models with an extra compact spatial dimension described by the orbifold S 1 /(Z2 ×Z ′ 2 ). Gauge and Higgs degrees of freedom live in the bulk, while matter fields can only live at the fixed point branes. We present an extended discussion of matter interactions on the brane. We show that proton decay is naturally suppressed or even forbidden by suitable implementations of the parity symmetries on the brane. The corresponding mechanism does not affect the SU(5) description of fermion masses also including the neutrino sector, where Majorana mass terms remain allowed.

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Metadata

Authors
Altarelli, G., & Feruglio, F.
Venue
Physics Letters B
Publisher
Elsevier BV
Published
2001-07
Volume
511
Issue
2-4
Pages
257-264
ISSN
0370-2693 (ISSN-L)
OpenAlex
W2142625383
Cited by
328
References
0
FWCI
30.27
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: SU(5) grand unification in extra dimensions and proton decay. https://app.cochat.ai/papers/10.1016/s0370-2693(01)00650-5
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Altarelli, G., & Feruglio, F. (2001). SU(5) grand unification in extra dimensions and proton decay. Physics Letters B. https://doi.org/10.1016/s0370-2693(01)00650-5

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