Quark flavour conserving violations of the lepton number

Abstract

We study supersymmetric models of lepton and baryon number violation based on an abelian family gauge group. Due to possible lepton-Higgs mixing, the lepton violating couplings are related to the Yukawa couplings and may be generated by them even if they were absent in the original theory. Such terms may be dominant and are not given by the naive family charge counting rules. This enhancement mechanism can provide an alignment between lepton-number violating terms and Yukawa couplings: as a result they conserve quark flavour. A natural way of suppressing baryon number violation in this class of models is also proposed.

11 pages

Cited by in corpus (26)

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• Bi-maximal neutrino mixing and small U_{e3} from Abelian flavor symmetry
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• R-Parity Violation and Non-Abelian Discrete Family Symmetry
• Fermion Mass Hierarchy and Electric Dipole Moments
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