Abstract
The cross-sections for the production of single charged and neutral intermediate vector bosons were measured using integrated luminosities of 52 pb^{-1} and 154 pb^{-1} collected by the DELPHI experiment at centre-of-mass energies of 182.6 GeV and 188.6 GeV, respectively. The cross-sections for the reactions were determined in limited kinematic regions. The results found are in agreement with the Standard Model predictions for these channels.
Highlights
The measurement of the production cross-section of a single vector boson (e+e− → e−νeW +, e+e− → e+e−Z)1 is a test of the Standard Model
The study of these processes is important in the evaluation of background to the search for the Higgs boson and for physics beyond the Standard Model
The experimental signature of these events consists of a pair of jets produced in the hadronic decay of the γ∗/Z recoiling against an electron
Summary
The measurement of the production cross-section of a single vector boson (e+e− → e−νeW +, e+e− → e+e−Z) is a test of the Standard Model. The study of these processes is important in the evaluation of background to the search for the Higgs boson and for physics beyond the Standard Model. Single-W production is interesting in itself for the measurement of the trilinear couplings at the W W γ vertex; this measurement, in combination with other physics channels, has been made by the DELPHI Collaboration and is reported elsewhere [1]. This letter presents measurements of single-W and single-Z production cross-sections using the data collected by DELPHI at centre-of-mass energies of 182.6 and 188.6 GeV. The detector has remained essentially unchanged in the past few years, except for upgrades of the Vertex Detector [4]
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