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Journal Articles Physics Reports Year : 2013

Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP

S. Schael , A. Blondel (1) , M. Swynghedauw (1) , J. Abdallah (2) , P. Antilogus (2) , J.E. Augustin (2) , M. Baubillier (2) , E. Ben-Haim (2) , M. Berggren (2) , W. da Silva (2) , F. Kapusta (2) , A. Savoy-Navarro (2) , R. Barbier (3) , R. Chierici (3) , A. Duperrin (3) , P. Jonsson (3) , S. Katsanevas (3) , G. Smadja (3) , P. Verdier (3) , P. Achard , M. Chemarin (3) , H. El Mamouni (3) , J. Fay (3) , G. Grenier (3) , I. Laktineh (3) , P. Lebrun (3) , J.-P. Martin (3) , G.-S. Muanza (3) , C. Souga (3) , B. Tellili (3) , D. Teyssier (3) , G. Abbiendi , Y. Arnoud (4) , C. Bérat (4) , F. Ledroit (4) , J. Boucrot (5) , O. Callot (5) , M. Davier (5) , L. Duflot (5) , J.-F. Grivaz (5) , Ph. Heusse (5) , A. Jacholkowska (5) , F. Le Diberder (5) , J. Lefrancois (5) , M.-H. Schune (5) , L. Serin (5) , J.-J. Veillet (5) , I. Videau (5) , D. Zerwas (5) , P. Bambade (5) , B. Bouquet (5) , G. Cosme (5) , F. Fulda-Quenzer (5) , G. Grosdidier (5) , V. Lepeltier (5) , F. Richard (5) , P. Roudeau (5) , A. Stocchi (5) , Sw. Banerjee (6) , J.J. Blaising (6) , G. Coignet (6) , D. Duchesneau (6) , D. Perret-Gallix (6) , S. Rosier-Lees (6) , M. Vivargent (6) , R. Barate (6) , R. Brunelière (6) , I. de Bonis (6) , D. Decamp (6) , P. Ghez (6) , C. Goy (6) , S. Jézéquel (6) , J.P. Lees (6) , A. Lucottte (6) , F. Martin (6) , E. Merle (6) , M.N. Minard (6) , J.-Y. Nief (6) , P. Odier (6) , B. Pietrzyk (6) , B. Trocmé (6) , Ziad Zj Ajaltouni (7) , F. Badaud (7) , G. Chazelle (7) , O. Deschamps (7) , S. Dessagne (7) , Alain Falvard (7, 8) , C. Ferdi (7) , D. Fayolle (7) , Pascal Gay (7) , C. Guicheney (7) , Pierre Henrard (7) , J. Jousset (7) , B. Michel (7) , S. Monteil (7) , Jean-Claude Montret (7) , D. Pallin (7) , J M. Pascolo (7) , Pascal Perret (7) , F. Podlyski (7)
S. Schael
  • Function : Author
P. Verdier
P. Achard
  • Function : Author
D. Teyssier
G. Abbiendi
  • Function : Author
C. Goy

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 3 fb$^{-1}$ collected by the four LEP experiments ALEPH, DELPHI, L3 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, $B(W\to\mathrm{had})$, and the trilinear gauge-boson self-couplings $g^Z_1$, $\kappa_\gamma$ and $\lambda_\gamma$ are determined to be: M_W = 80.376 \pm 0.033 ~GeV \Gamma_W = 2.195 \pm 0.083 ~GeV B(W\to\mathrm{had}) = 67.41 \pm 0.27 % g^Z_1 = 0.984 ^{+0.018}_{-0.020} \kappa_\gamma = 0.982 \pm 0.042 \lambda_\gamma = -0.022 \pm 0.019

Dates and versions

in2p3-00848801 , version 1 (29-07-2013)

Identifiers

Cite

S. Schael, A. Blondel, M. Swynghedauw, J. Abdallah, P. Antilogus, et al.. Electroweak Measurements in Electron-Positron Collisions at W-Boson-Pair Energies at LEP. Physics Reports, 2013, 532, pp.119-244. ⟨10.1016/j.physrep.2013.07.004⟩. ⟨in2p3-00848801⟩
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