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Measurement of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$|{\rm V}_{\rm ub}|$\end{document} using \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$b$\end{document} hadron semileptonic decay
被引：0
作者：
G. Abbiendi et al.
机构：
[1] Dipartimento di Fisica dell' Università di Bologna and INFN,
[2] 40126 Bologna,undefined
[3] Italy
,undefined
关键词：
Matrix Element;
Systematic Error;
Statistical Error;
Opal Data;
Heavy Quark;
D O I：
10.1007/s100520100764
中图分类号：
学科分类号：
摘要：
The magnitude of the CKM matrix element \documentclass[12pt]{minimal}
\usepackage{amsmath}
\usepackage{wasysym}
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\begin{document}$|{\rm V}_{\rm ub}|$\end{document} is determined by measuring the inclusive charmless semileptonic branching fraction of beauty hadrons at OPAL based on \documentclass[12pt]{minimal}
\usepackage{amsmath}
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\begin{document}$b \to{\rm X}_{\rm u} \ell \nu $\end{document} event topology and kinematics. This analysis uses OPAL data collected between 1991 and 1995, which correspond to about four million hadronic Z decays. We measure Br(\documentclass[12pt]{minimal}
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\begin{document}$b \to{\rm X}_{\rm u} \ell \nu$\end{document}) to be (\documentclass[12pt]{minimal}
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\usepackage{wasysym}
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\begin{document}$1.63 \pm 0.53^{+0.55}_{-0.62}) \times 10^{-3}$\end{document}. The first uncertainty is the statistical error and the second is the systematic error. From this analysis, \documentclass[12pt]{minimal}
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\setlength{\oddsidemargin}{-69pt}
\begin{document}$|{\rm V}_{\rm ub}|$\end{document} is determined to be:
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页码：399 / 410
页数：11
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