par Abreu, Paulo;Bertrand, Daniel ; [et al.]
Référence Zeitschrift für Physik. C, Particles and fields, 73, page (243-251)
Publication Publié, 1997
Article révisé par les pairs
Résumé : A search for lepton flavour number violating Z0 decays in the channels Z0 → μτ, Z0 → eτ, Z0 → eμ, using the DELPHI detector with data collected during the 1991-94 LEP runs, is described. No signal was found. Upper limits at 95% confidence level for the respective branching fractions of 1.2 × 10-5, 2.2 × 10-5, and 0.25 × 10-5, were obtained. © Springer-Verlag 1997.