Universality-Breaking Effects in Leptonic Z Decays

Abstract

We analyze the possibility of universality violation in diagonal leptonic decays of the $Z$ boson, in the context of interfamily "see-saw" models. In a minimal extension of the Standard Model with right-handed neutrino fields, we find that universality-breaking effects increase quadratically with the heavy Majorana neutrino mass and may be observed in the running $LEP$ experiments.

MZ-TH/93-04 #, LaTeX, 14 p. (2 Figs)

References in corpus (3)

• Radiatively Induced Neutrino Masses and Large Higgs-Neutrino Couplings in the Standard Model with Majorana Fields
• Leptonic CP Asymmetries in Flavor-changing H0 Decays
• Leptonic Flavor-changing Z0 Decays in SU(2)xU(1) Theories with Right- handed Neutrinos

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