R-Parity Violation and Unification

Details R-Parity Violation and Unification R-Parity Violation and Unification

1997-04-16

arxiv.org/abs/hep-ph/9704339v2

Phys.Lett.B406:321-327,1997

Physics

High Energy Physics

High Energy Physics - Phenomenology

Flipped SU(5) example modified. Conclusions unchanged

Scientific paper

10.1016/S0370-2693(97)00702-8

The reported anomaly in deep-inelastic scattering at HERA has revived interest in the phenomenology of R-parity violation. From the theoretical point of view, the existence of R-violating interactions poses two considerable problems. The first one concerns the flavour structure of the interactions and the origin of an appropriate suppression of flavour-changing neutral-current processes and lepton-family transitions. The second one concerns the way of embedding R-violating interactions in a grand unified theory (GUT) without introducing unacceptable nucleon decay rates. We show that the second problem can be solved by a mechanism which is purely group theoretical and does not rely on details of the flavour theory. We construct explicit GUT models in which our mechanism can be realized.

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