Search for lepton flavour violation in e+e− collisions at =189–209 GeV

2001/09/10 by The OPAL collaboration, C. Ainsley, G. Abbiendi +98 · 1 citation
Physics and Astronomy · #Dark Matter and Cosmic Phenomena #Neutrino Physics Research #Particle physics theoretical and experimental studies #hep-ex

paper · pdf · doi:10.1016/s0370-2693(01)01086-3

published as Phys.Lett.B519:23-32,2001 · 15 pages, 4 figures, Accepted by Physics Letters B

arxiv created 2001/09/10 · openalex publication_date 2001/10/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/04

Abstract

We search for lepton flavour violating events (eμ, eτ and μτ) that could be directly produced in e+e− annihilations, using the full available data sample collected with the OPAL detector at centre-of-mass energies between 189 GeV and 209 GeV. In general, the Standard Model expectations describe the data well for all the channels and at each s. A single eμ event is observed where according to our Monte Carlo simulations only 0.019 events are expected from Standard Model processes. We obtain the first limits on the cross-sections σ(e+e−→eμ, eτ and μτ) as a function of s at LEP2 energies.

Citations

• Experimental observation of isolated large transverse energy electrons with associated missing energy at
• Measurement of the rate of nu_e + d --> p + p + e^- interactions produced by 8B solar neutrinos at the Sudbury Neutrino Observatory
• Review of Particle Physics

Cited by

• Lepton flavor violation ine±e−→l±e−(l=μ,τ)induced byR-conserving supersymmetry