Title: Measurement of the Compton scattering process at LEP2
Abstract: The process eγ → eZγ∗ is studied in e+e− collisions with the OPAL detector at LEP at a centre of mass energy of √s = 189 GeV. The cross-section times the branching ratio of the Zγ∗ decaying into hadrons is measured within Lorentz invariant kinematic limits to be (4.6 ± 0.9 ± 0.6) pb for hadronic masses between 5 GeV and 60 GeV and (1.5 ± 0.3 ± 0.3) pb for hadronic masses above 60 GeV. The spectra of the Mandelstam variables ŝ, t̂, and û are also measured and compared with the predictions from the Monte Carlo generators grc4f and PYTHIA.
Publication Year: 2000
Publication Date: 2000-03-01
Language: en
Type: article
Indexed In: ['crossref']
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