Search for Trilinear Neutral Gauge Boson Couplings in Z-gamma production at sqrt(s)=189GeV at LEP

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dc.creatorThe OPAL collaboration
dc.creatorAbbiendi, G.
dc.date2000-07-09
dc.date.accessioned2026-07-07T12:01:30Z
dc.date.available2026-07-07T12:01:30Z
dc.descriptionThe data recorded at a centre-of-mass energy of 189GeV by the OPAL detector at LEP are used to search for trilinear couplings of the neutral gauge bosons in the process e+e- --> Z-gamma. The cross-sections are measured for multihadronic events with an energetic isolated photon and for events with a high energy photon accompanied by missing energy. These cross-sections and the photon energy, polar angle and isolation angle distributions are compared to the Standard Model predictions and to the theoretical expectations of a model allowing for Z-gamma-Z and Z-gamma-gamma vertices. Since no significant deviations with respect to the Standard Model expectations are found, constraints are derived on the strength of neutral trilinear gauge couplings.
dc.description25 pages, 7 figures, submitted to Eur. Phys. J. C
dc.identifierhttps://arxiv.org/abs/hep-ex/0007016
dc.identifierhttp://arxiv.org/abs/hep-ex/0007016
dc.identifierEur.Phys.J.C17:553-566,2000
dc.identifierdoi:10.1007/s100520000490
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/207116
dc.subjectHigh Energy Physics - Experiment
dc.titleSearch for Trilinear Neutral Gauge Boson Couplings in Z-gamma production at sqrt(s)=189GeV at LEP
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