Published October 1984 | Version v1
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A study of final states with four charged leptons in e+e- interactions

  • 1. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany, F.R.)
  • 2. Glasgow Univ. (UK)
  • 3. Hamburg Univ. (Germany, F.R.). 2. Inst. fuer Experimentalphysik
  • 4. Karlsruhe Univ. (T.H.) (Germany, F.R.)
  • 5. Kernforschungszentrum Karlsruhe G.m.b.H. (Germany, F.R.)
  • 6. Max-Planck-Institut fuer Physik und Astrophysik, Muenchen (Germany, F.R.)
  • 7. Paris-11 Univ., 91 - Orsay (France). Lab. de l'Accelerateur Lineaire
  • 8. Paris-11 Univ., 91 - Orsay (France). Lab. de Physique Nucleaire et Hautes Energies
  • 9. Istituto Nazionale di Fisica Nucleare, Rome (Italy)
  • 10. Rome Univ. (Italy)
  • 11. CEA Centre d'Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)
  • 12. Tel Aviv Univ. (Israel)

Description

Electron-positron interactions producing the final states e+e-e+e-, e+e-μ+μ-, e+e-tau+tau- and μ+μ-μ+μ- have been studied in the CELLO detector at PETRA. Results are presented on 10 events where the four particles emerge at large angle (> 230) with respect to the beam axis. Comparison is made with QED predictions, and an indication is found for an excess of events where all 1+1- masses (1=e,μ,tau) are large. (orig.)

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Additional details

Publishing Information

Imprint Pagination
19 p.
Report number
DESY--84-103

Optional Information

Collaborations
CELLO Collaboration.