Search for trilinear neutral gauge boson couplings in Zγ production at √s=189 GeV at LEP

, OPAL Collaboration (2000) Search for trilinear neutral gauge boson couplings in Zγ production at √s=189 GeV at LEP. European Physical Journal C: Particles and Fields, 17 (4). pp. 553-566. ISSN 1434-6044

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Abstract

The data recorded at a centre-of-mass energy of √s=189 GeV by the OPAL detector at LEP are used to search for trilinear couplings of the neutral gauge bosons in the process e+e−→Zγ. The cross-sections for multihadronic events with an energetic isolated photon, and for events with a high energy photon accompanied by missing energy are measured. 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 ZγZ and Zγγ 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.

Item Type:
Journal Article
Journal or Publication Title:
European Physical Journal C: Particles and Fields
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2200/2201
Subjects:
ID Code:
82873
Deposited By:
Deposited On:
15 Nov 2016 10:04
Refereed?:
Yes
Published?:
Published
Last Modified:
28 Oct 2020 05:09