A DETERMINATION OF THE STRONG COUPLING-CONSTANT ALPHA-S FROM W-PRODUCTION AT THE CERN PPAR COLLIDER

被引：38

作者：

ALITTI, J

机构：

[1] Centre d'Etudes Nucléaires de Saclay

[2] Dipartimento di Fisica Nucleare e Teorica, Università di Pavia, INFN, I-27100 Pavia

[3] Laboratoire de l'Accélérateur Linéaire, Université de Paris-Sud

[4] Dipartimento di Fisica dell'Università di Pisa and INFN, Sezione di Pisa, Via Livornese, S. Piero a Grado

[5] School of Physics, University of Melbourne, Parkville

[6] CERN

[7] Dipartimento di Fisica dell'università di Milano, INFN, Sezione di Milano

[8] Laboratorium für Hochenergiephysik, Universität Bern, CH-3012 Bern

[9] Dipartimento di Fisica dell'Universidà di Perugia, INFN, Sezione di Perugia, I-06100 Perugia, via Pascoli

[10] Canvendish Laboratory, University of Cambridge, Cambridge

[11] Universität Dortmund

[12] Institut für Hochenergiephysik der Universität Heidelberg, W-6900 Heidelberg

来源：

PHYSICS LETTERS B | 1991年 / 263卷 / 3-4期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1016/0370-2693(91)90505-K

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

The large sample of W --> e-nu events collected by the UA2 experiment at the CERN ppBAR collider between 1988 and 1990 has been used to determine the strong coupling constant alpha-s. From a measurement of the ratio of the production rate of W events with one jet to that with no jets, alpha-s has been extracted to second order in the MS scheme: alpha-s(M(W)2) = 0.123 +/- 0.0.18(stat.) +/- 0.017(syst.).

引用

页码：563 / 572

页数：10

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