Study of tau-pair production in photon-photon collisions at LEP and limits on the anomalous electromagnetic moments of the tau lepton

Collaboration
Sep, 2003
20 pages
Published in:
  • Eur.Phys.J.C 35 (2004) 159-170
e-Print:
Report number:
  • CERN-EP-2003-058
Experiments:

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Abstract:
Tau-pair production in the process e+e- -> e+e-tau+tau- was studied using data collected by the DELPHI experiment at LEP2 during the years 1997 - 2000. The corresponding integrated luminosity is 650 pb^{-1}. The values of the cross-section obtained are found to be in agreement with QED predictions. Limits on the anomalous magnetic and electric dipole moments of the tau lepton are deduced.
Note:
  • 20 pages, 9 figures, Accepted by Eur. Phys. J. C Report-no: CERN-EP/2003-058 Journal-ref: Eur. Phys. J. C35 (2004) 159-170
  • electron positron: colliding beams
  • exchange: two-photon
  • photon photon: exclusive reaction
  • tau: pair production
  • channel cross section
  • tau: electric moment
  • tau: magnetic moment
  • quantum electrodynamics: validity test
  • DELPHI
  • experimental results