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Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP
文献类型：期刊论文
| 作者 | ALEPH Collaboration; DELPHI Collaboration; OPAL Collaboration; LEP Electroweak Working Grp |
| 刊名 | PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS
 |
| 出版日期 | 2013 |
| 卷号 | 532期号:4页码:119-244 |
| 关键词 | OF-MASS ENERGIES TOP-QUARK MASS CARLO EVENT GENERATOR HADRONIC Z-DECAYS INVARIANT YFS EXPONENTIATION ANOMALOUS MAGNETIC-MOMENT (UN)STABLE W+W-PRODUCTION FERMION-LOOP SCHEME COLOR DIPOLE MODEL LEADING ORDER QCD |
| 通讯作者 | Schael, S (reprint author), Rhein Westfal TH Aachen, Inst Phys, D-52056 Aachen, Germany. |
| 英文摘要 | Electroweak measurements performed with data taken at the electron positron collider LEP at CERN from 1995 to 2000 are reported. The combined data set considered in this report corresponds to a total luminosity of about 3 fb(-1) collected by the four LEP experiments ALEPH, DELPHI, 13 and OPAL, at centre-of-mass energies ranging from 130 GeV to 209 GeV. Combining the published results of the four LEP experiments, the measurements include total and differential cross-sections in photon-pair, fermion-pair and four-fermion production, the latter resulting from both double-resonant WW and ZZ production as well as singly resonant production. Total and differential cross-sections are measured precisely, providing a stringent test of the Standard Model at centre-of-mass energies never explored before in electron positron collisions. Final-state interaction effects in four-fermion production, such as those arising from colour reconnection and Bose Einstein correlations between the two W decay systems arising in WW production, are searched for and upper limits on the strength of possible effects are obtained. The data are used to determine fundamental properties of the W boson and the electroweak theory. Among others, the mass and width of the W boson, m(w) and Gamma(w), the branching fraction of W decays to hadrons, B(W -> had), and the trilinear gauge-boson self-couplings g(1)(Z), K-gamma and lambda(gamma), are determined to be: m(w) = 80.376 +/- 0.033 GeV Gamma(w) = 2.195 +/- 0.083 GeV B(W -> had) = 67.41 +/- 0.27% g(1)(Z) = 0.984(-0.020)(+0.018) K-gamma - 0.982 +/- 0.042 lambda(gamma) = 0.022 +/- 0.019. (C) 2013 Elsevier B.V. All rights reserved. |
| 学科主题 | Physics |
| 类目[WOS] | Physics, Multidisciplinary |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000328723800001 |
| 公开日期 | 2016-02-26 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/213646]  |
| 专题 | 高能物理研究所_实验物理中心 |
| 作者单位 | 中国科学院高能物理研究所 |
| 推荐引用方式 GB/T 7714 | ALEPH Collaboration,DELPHI Collaboration,OPAL Collaboration,et al. Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP[J]. PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,2013,532(4):119-244. |
| APA | ALEPH Collaboration,DELPHI Collaboration,OPAL Collaboration,&LEP Electroweak Working Grp.(2013).Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP.PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS,532(4),119-244. |
| MLA | ALEPH Collaboration,et al."Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP".PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS 532.4(2013):119-244. |
入库方式： OAI收割
来源：高能物理研究所
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