Journal article
Search for excited leptons at LEP
Abstract
Excited leptons have been searched for using data recorded by the OPAL detector at LEP. No evidence for such particles has been found. From the study of e+e− → ℓ+ℓ−γγ events, lower limits on the masses of spin-12 excited leptons are found to be 44.9 GeV at 95% confidence level. From the study of e+e− →ℓ+ℓ−γ events, upper limits on their couplings are set up to ℓ∗ masses close to the mass of the Z0 boson.
Authors
Collaboration O; Akrawy MZ; Alexander G; Allison J; Allport PP; Anderson KJ; Armitage JC; Arnison GTJ; Ashton P; Azuelos G
Journal
Physics Letters B, Vol. 244, No. 1, pp. 135–142
Publisher
Elsevier
Publication Date
7 1990
DOI
10.1016/0370-2693(90)90283-c
ISSN
0370-2693