6533b851fe1ef96bd12a8b36
RESEARCH PRODUCT
Search for lepton flavour number violating Z°-decays
Delphi CollaborationAntonio Ferrer SoriaEmilio Higón RodríguezMaría Victoria Castillo GiménezAntonio Martínez VidalJuan José Hernández ReyJuan A. Fuster VerdúJosé Salt CairolsCarlos Lacasta Llácersubject
High Energy Physics::PhenomenologyHigh Energy Physics::ExperimentPartícules (Física nuclear)Detectors de radiaciódescription
A search for lepton flavour number violating $Z^0$ decays in the channels \begin{center} $Z^0\rightarrow \mu\tau$,\\ $Z^0\rightarrow e\tau$, \\ $Z^0\rightarrow e\mu$, \\ \end{center} 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 $1.2\times 10^{-5}$, $2.2\times 10^{-5}$, and $0.25\times 10^{-5}$, were obtained.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 1997-01-01 |