TL;DR
This paper reviews key measurements of the W boson at LEP, including cross-sections, decay modes, and couplings, providing tests of the Standard Model and precise determinations of its mass and width.
Contribution
It presents the most recent and precise measurements of W boson properties at LEP, including mass, width, and couplings, confirming Standard Model predictions.
Findings
W-pair and single-W cross-sections agree with theory
W decay branching fractions match predictions
W mass and width are precisely measured and consistent with indirect analyses
Abstract
Studying the properties of the W boson plays a key role in precision tests of the Standard Model. The key measurements performed over the last decade will be reviewed. W-pair and single-W cross-sections and W decay branching fractions are determined and agree well with theoretical predictions. Including the analysis of differential distributions, trilinear and quartic couplings of the W boson to the other gauge bosons are extracted. A precise measurement of the mass and width of the W boson is presented. The W mass is in good agreement with the one obtained indirectly from an analysis of other electroweak data measured at LEP and SLD. Some of the results presented in this article are preliminary.
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Taxonomy
TopicsParticle Accelerators and Free-Electron Lasers · Particle physics theoretical and experimental studies · Particle accelerators and beam dynamics