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Measurement of triple gauge boson couplings from \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} ${\rm W^+W^-}$\end{document} production at \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document} $\sqrt s=172$\end{document}GeV
被引：0
作者：
K. Ackerstaff et al.
机构：
[1] CERN,
[2] European Organisation for Particle Physics,undefined
[3] CH-1211 Geneva 23,undefined
[4] Switzerland
,undefined
关键词：
Gauge Boson;
Opal Detector;
Decay Channel;
Coupling Parameter;
Kinematic Variable;
D O I：
10.1007/s100529800838
中图分类号：
学科分类号：
摘要：
We present measurements of triple gauge boson coupling parameters using data recorded by the OPAL detector at LEP2, at a centre-of-mass energy of 172 GeV. A total of 120 W-pair candidates has been selected in the \documentclass[12pt]{minimal}
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${\rm q \bar q q \bar q}$\end{document}, \documentclass[12pt]{minimal}
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${\rm q\bar q} \ell \bar\nu_\ell$\end{document} and \documentclass[12pt]{minimal}
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$\ell \bar \nu_\ell \bar\ell^\prime \nu_{\ell^\prime }$\end{document} decay channels, for an integrated luminosity of 10.4 pb\documentclass[12pt]{minimal}
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$^{-1}$\end{document}. We use these data to determine several different anomalous coupling parameters using the measured cross-section and the distributions of kinematic variables. We measure \documentclass[12pt]{minimal}
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$\alpha_{B\phi} = 0.35^{+1.29}_{-1.07} \pm 0.38$\end{document}, \documentclass[12pt]{minimal}
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$\alpha_{W\phi} = 0.00^{+0.30}_{-0.28} \pm 0.11$\end{document}, \documentclass[12pt]{minimal}
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$\alpha_W = 0.18^{+0.49}_{-0.47} \pm 0.23$\end{document}, \documentclass[12pt]{minimal}
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$\Delta g^{\rm z}_1 = -0.03^{+0.40}_{-0.37} \pm 0.14$\end{document}, \documentclass[12pt]{minimal}
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$\Delta\kappa_\gamma ^{(HISZ)} = 0.03^{+0.55}_{-0.51} \pm 0.20$\end{document}, and \documentclass[12pt]{minimal}
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$\Delta \kappa = 0.33^{+0.49}_{-0.46} \pm 0.21$\end{document}. Combining the \documentclass[12pt]{minimal}
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$\alpha_{W\phi}$\end{document} result with our previous result obtained from the 161 GeV data sample we measure \documentclass[12pt]{minimal}
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$\alpha_{W\phi} = -0.08^{+0.28}_{-0.25} \pm 0.10$\end{document}. All of these measurements are consistent with the Standard Model.
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页码：597 / 606
页数：9
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