We have searched for lepton flavour violation in Z boson decays into lepton pairs using all data collected with the L3 detector during the 1990, 1991 and 1992 runs on an event sample corresponding to 1 500 000 Z's produced. At the 95% confidence level the upper limits on the branching ratio for Z --> emu is 0.6 x 10(-5), for Z --> etau this is 1.3 x 10(-5) and for Z-mutau this is 1.9 X 10(-5).
Search For Lepton Flavor Violation In Z-decays
SANTOCCHIA, Attilio;FIANDRINI, Emanuele;BERTUCCI, Bruna;PAULUZZI, Michele
1993
Abstract
We have searched for lepton flavour violation in Z boson decays into lepton pairs using all data collected with the L3 detector during the 1990, 1991 and 1992 runs on an event sample corresponding to 1 500 000 Z's produced. At the 95% confidence level the upper limits on the branching ratio for Z --> emu is 0.6 x 10(-5), for Z --> etau this is 1.3 x 10(-5) and for Z-mutau this is 1.9 X 10(-5).File in questo prodotto:
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