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 g1Z, κγ and λγ are determined to be: mW=80.376±0.033GeV ΓW=2.195±0.083GeV B(W→had)=67.41±0.27% g1Z=0.9840+0.018-0.020 κγ=0.982±0.042λγ=-0.022±0.019. © 2013 Elsevier B.V.

Schael, S., Barate, R., Brunelière, R., Buskulic, D., De Bonis, I., Decamp, D., et al. (2013). Electroweak measurements in electron-positron collisions at W-boson-pair energies at LEP. PHYSICS REPORTS, 532(4), 119-244 [10.1016/j.physrep.2013.07.004].

Electroweak measurements in electron-positron collisions at W-boson-pair energies at LEP

BONESINI, MAURIZIO GIORGIO;CALVI, MARTA;PAGANONI, MARCO;PULLIA, ANTONINO;TABARELLI DE FATIS, TOMMASO;TERRANOVA, FRANCESCO;
2013

Abstract

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 g1Z, κγ and λγ are determined to be: mW=80.376±0.033GeV ΓW=2.195±0.083GeV B(W→had)=67.41±0.27% g1Z=0.9840+0.018-0.020 κγ=0.982±0.042λγ=-0.022±0.019. © 2013 Elsevier B.V.
Articolo in rivista - Articolo scientifico
Decays of heavy intermediate gauge bosons; Effective coupling constants; Electron-positron physics; Electroweak interactions; Fermion-antifermion production; Higgs boson; Neutral weak current; Precision measurements at W-pair energies; Radiative corrections; Tests of the Standard Model; Top quark; W boson; Z boson; Physics and Astronomy (all)
English
2013
532
4
119
244
none
Schael, S., Barate, R., Brunelière, R., Buskulic, D., De Bonis, I., Decamp, D., et al. (2013). Electroweak measurements in electron-positron collisions at W-boson-pair energies at LEP. PHYSICS REPORTS, 532(4), 119-244 [10.1016/j.physrep.2013.07.004].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/72450
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