Journal article
A study of muon pair production and evidence for tau pair production in photon-photon collisions at LEP
Abstract
We have studied the reactionsγγ→μ+μ− andγγ→τ+τ− by measuring the properties of events of the typese+e−→e+e−μ+μ− ande+e−→e+e−τ+τ− ate+e− centre-of-mass energies between 88 and 94 GeV. The data sample corresponds to an integratede+e− luminosity of 40.4 pb−1 collected by the OPAL detector at LEP. The QED structure functionF2 is extracted from a sample of 1462γγ→μ+μ− events in which one photon is off the mass shell (single-tagged). TheQ2 range for …
Authors
OPAL Collaboration; Akers R; Alexander G; Allison J; Anderson KJ; Arcelli S; Astbury A; Axen D; Azuelos G; Baines JTM
Journal
Zeitschrift für Physik C Particles and Fields, Vol. 60, No. 4, pp. 593–600
Publisher
Springer Nature
Publication Date
December 1993
DOI
10.1007/bf01558388
ISSN
0170-9739