Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP
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 3fb -1 collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at cent...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Article |
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Elsevier
2019
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| Online Access: | https://hdl.handle.net/1721.1/121290 |
| _version_ | 1826195139800858624 |
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| author | Becker, Ulrich J Berges, Peter Burger, Joseph D Cai, Xudong Capell, Michael H Clare, I. Eppling, Frederic J Fisher, Peter H Forconi, G. Galaktionov, Y. Klimentov, Alexei Koutsenko, Vladimir Kunin, A. Lebedev, Alexei Paus, Christoph M. E. Shoutko, V. Steuer, Manfred Ting, Samuel Marks Ting, Susan Carol Aleph Collaboration Delphi Collaboration L3 Collaboration OPAL Collaboration LEP Electroweak Working Group |
| author2 | Massachusetts Institute of Technology. Department of Physics |
| author_facet | Massachusetts Institute of Technology. Department of Physics Becker, Ulrich J Berges, Peter Burger, Joseph D Cai, Xudong Capell, Michael H Clare, I. Eppling, Frederic J Fisher, Peter H Forconi, G. Galaktionov, Y. Klimentov, Alexei Koutsenko, Vladimir Kunin, A. Lebedev, Alexei Paus, Christoph M. E. Shoutko, V. Steuer, Manfred Ting, Samuel Marks Ting, Susan Carol Aleph Collaboration Delphi Collaboration L3 Collaboration OPAL Collaboration LEP Electroweak Working Group |
| author_sort | Becker, Ulrich J |
| collection | MIT |
| description | 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 3fb -1 collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from 130GeV to 209GeV. 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 W W and Z Z 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 W W 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 Γ W , the branching fraction of W decays to hadrons, B (W → had), and the trilinear gauge-boson self-couplings g 1Z , κγ and λγ are determined to be: m W =80.376±0.033GeV Γ W =2.195±0.083GeV B(W→had)=67.41±0.27% g 1Z =0.9840 +0.018-0.020 κ γ =0.982±0.042λ γ =-0.022±0.019. © 2013 Elsevier B.V. |
| first_indexed | 2024-09-23T10:07:56Z |
| format | Article |
| id | mit-1721.1/121290 |
| institution | Massachusetts Institute of Technology |
| last_indexed | 2024-09-23T10:07:56Z |
| publishDate | 2019 |
| publisher | Elsevier |
| record_format | dspace |
| spelling | mit-1721.1/1212902022-09-30T19:06:09Z Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP Becker, Ulrich J Berges, Peter Burger, Joseph D Cai, Xudong Capell, Michael H Clare, I. Eppling, Frederic J Fisher, Peter H Forconi, G. Galaktionov, Y. Klimentov, Alexei Koutsenko, Vladimir Kunin, A. Lebedev, Alexei Paus, Christoph M. E. Shoutko, V. Steuer, Manfred Ting, Samuel Marks Ting, Susan Carol Aleph Collaboration Delphi Collaboration L3 Collaboration OPAL Collaboration LEP Electroweak Working Group Massachusetts Institute of Technology. Department of Physics Massachusetts Institute of Technology. Laboratory for Nuclear Science 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 3fb -1 collected by the four LEP experiments ALEPH, DELPHI, L3 and OPAL, at centre-of-mass energies ranging from 130GeV to 209GeV. 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 W W and Z Z 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 W W 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 Γ W , the branching fraction of W decays to hadrons, B (W → had), and the trilinear gauge-boson self-couplings g 1Z , κγ and λγ are determined to be: m W =80.376±0.033GeV Γ W =2.195±0.083GeV B(W→had)=67.41±0.27% g 1Z =0.9840 +0.018-0.020 κ γ =0.982±0.042λ γ =-0.022±0.019. © 2013 Elsevier B.V. 2019-06-14T19:58:31Z 2019-06-14T19:58:31Z 2013-08 2013-02 2019-03-21T17:48:16Z Article http://purl.org/eprint/type/JournalArticle 0370-1573 https://hdl.handle.net/1721.1/121290 Schael, S. et al. “Electroweak Measurements in Electron–positron Collisions at W-Boson-Pair Energies at LEP.” Physics Reports 532, 4 (November 2013): 119–244 © 2013 Elsevier B.V. http://dx.doi.org/10.1016/j.physrep.2013.07.004 Physics Reports Creative Commons Attribution-NonCommercial-NoDerivs License http://creativecommons.org/licenses/by-nc-nd/4.0/ application/pdf Elsevier arXiv |
| spellingShingle | Becker, Ulrich J Berges, Peter Burger, Joseph D Cai, Xudong Capell, Michael H Clare, I. Eppling, Frederic J Fisher, Peter H Forconi, G. Galaktionov, Y. Klimentov, Alexei Koutsenko, Vladimir Kunin, A. Lebedev, Alexei Paus, Christoph M. E. Shoutko, V. Steuer, Manfred Ting, Samuel Marks Ting, Susan Carol Aleph Collaboration Delphi Collaboration L3 Collaboration OPAL Collaboration LEP Electroweak Working Group Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title | Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title_full | Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title_fullStr | Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title_full_unstemmed | Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title_short | Electroweak measurements in electron–positron collisions at W-boson-pair energies at LEP |
| title_sort | electroweak measurements in electron positron collisions at w boson pair energies at lep |
| url | https://hdl.handle.net/1721.1/121290 |
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