Search for Charged Excited Leptons in e+e- Collisions at sqrt(s) = 183-209 GeV

Details Search for Charged Excited Leptons in e+e- Collisions at sqrt(s) = 183-209 GeV Search for Charged Excited Leptons in e+e- Collisions at sqrt(s) = 183-209 GeV

2002-06-24

arxiv.org/abs/hep-ex/0206061v2

Phys.Lett.B544:57-72,2002

Physics

High Energy Physics

High Energy Physics - Experiment

18 pages, 4 figures. Typos corrected

Scientific paper

10.1016/S0370-2693(02)02343-2

A search for charged excited leptons decaying into a lepton and photon has been performed using approximately 680 pb-1 of e+e- collision data collected by the OPAL detector at LEP at centre-of-mass energies between 183 GeV and 209 GeV. No evidence for their existence was found. Upper limits on the product of the cross-section and the branching fraction are inferred. Using results from the search for singly produced excited leptons, upper limits on the ratio of the excited lepton coupling constant to the compositeness scale are calculated. From pair production searches, 95% confidence level lower limits on the masses of excited electrons, muons and taus are determined to be 103.2 GeV.

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