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 centr...
| Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , |
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| Format: | Journal article |
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2013
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| _version_ | 1826261159921057792 |
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| author | Schael, S Barate, R Bruneliere, R Buskulic, D De Bonis, L Decamp, D Ghez, P Goy, C Jezequel, S Lees, J Lucotte, A Martin, F Merle, E Minard, M Nief, J Odier, P Pietrzyk, B Trocme, B Bravo, S Casado, M Chmeissani, M Comas, P Crespo, J Fernandez, E Fernandez-Bosman, M |
| author_facet | Schael, S Barate, R Bruneliere, R Buskulic, D De Bonis, L Decamp, D Ghez, P Goy, C Jezequel, S Lees, J Lucotte, A Martin, F Merle, E Minard, M Nief, J Odier, P Pietrzyk, B Trocme, B Bravo, S Casado, M Chmeissani, M Comas, P Crespo, J Fernandez, E Fernandez-Bosman, M |
| author_sort | Schael, S |
| collection | OXFORD |
| 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, mW and ΓW, the branching fraction of W decays to hadrons, B (W → had), and the trilinear gauge-boson self-couplings g1 Z, κγ and λγ are determined to be: mW=80.376±0.033GeV ΓW=2.195±0.083GeV B(W→had)=67.41±0.27% g1 Z=0.9840+0.018 -0.020 κγ=0.982±0.042λγ=-0.022±0.019. © 2013 Elsevier B.V. |
| first_indexed | 2024-03-06T19:17:09Z |
| format | Journal article |
| id | oxford-uuid:18cc6f8f-bc4a-45ab-ae57-432b8d036880 |
| institution | University of Oxford |
| last_indexed | 2024-03-06T19:17:09Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | oxford-uuid:18cc6f8f-bc4a-45ab-ae57-432b8d0368802022-03-26T10:45:14ZElectroweak measurements in electron positron collisions at W-boson-pair energies at LEPJournal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:18cc6f8f-bc4a-45ab-ae57-432b8d036880Symplectic Elements at Oxford2013Schael, SBarate, RBruneliere, RBuskulic, DDe Bonis, LDecamp, DGhez, PGoy, CJezequel, SLees, JLucotte, AMartin, FMerle, EMinard, MNief, JOdier, PPietrzyk, BTrocme, BBravo, SCasado, MChmeissani, MComas, PCrespo, JFernandez, EFernandez-Bosman, MElectroweak 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, mW and ΓW, the branching fraction of W decays to hadrons, B (W → had), and the trilinear gauge-boson self-couplings g1 Z, κγ and λγ are determined to be: mW=80.376±0.033GeV ΓW=2.195±0.083GeV B(W→had)=67.41±0.27% g1 Z=0.9840+0.018 -0.020 κγ=0.982±0.042λγ=-0.022±0.019. © 2013 Elsevier B.V. |
| spellingShingle | Schael, S Barate, R Bruneliere, R Buskulic, D De Bonis, L Decamp, D Ghez, P Goy, C Jezequel, S Lees, J Lucotte, A Martin, F Merle, E Minard, M Nief, J Odier, P Pietrzyk, B Trocme, B Bravo, S Casado, M Chmeissani, M Comas, P Crespo, J Fernandez, E Fernandez-Bosman, M 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 |
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