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)
1
LLR -
Laboratoire Leprince-Ringuet
2 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
3 IPNL - Institut de Physique Nucléaire de Lyon
4 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
5 LAL - Laboratoire de l'Accélérateur Linéaire
6 LAPP - Laboratoire d'Annecy de Physique des Particules
7 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
8 LPTA - Laboratoire de Physique Théorique et Astroparticules
2 LPNHE - Laboratoire de Physique Nucléaire et de Hautes Énergies
3 IPNL - Institut de Physique Nucléaire de Lyon
4 LPSC - Laboratoire de Physique Subatomique et de Cosmologie
5 LAL - Laboratoire de l'Accélérateur Linéaire
6 LAPP - Laboratoire d'Annecy de Physique des Particules
7 LPC - Laboratoire de Physique Corpusculaire - Clermont-Ferrand
8 LPTA - Laboratoire de Physique Théorique et Astroparticules
S. Schael
- Function : Author
P. Antilogus
- Function : Author
- PersonId : 741722
- IdHAL : pierre-antilogus
- ORCID : 0000-0002-0389-5706
- IdRef : 116029315
P. Achard
- Function : Author
D. Teyssier
- Function : Author
- PersonId : 755321
- ORCID : 0000-0002-6261-5292
G. Abbiendi
- Function : Author
C. Bérat
- Function : Author
- PersonId : 739578
- IdHAL : corinne-berat
- ORCID : 0000-0001-8294-6294
- IdRef : 033505187
C. Goy
- Function : Author
- PersonId : 740078
- IdHAL : goycorinne
- ORCID : 0000-0002-1297-8925
- IdRef : 092030998
S. Jézéquel
- Function : Author
- PersonId : 739301
- IdHAL : stephane-jezequel
- ORCID : 0000-0001-7369-6975
- IdRef : 074440926
Ziad Zj Ajaltouni
- Function : Author
- PersonId : 903794
O. Deschamps
- Function : Author
- PersonId : 12089
- IdHAL : olivier-deschamps
- ORCID : 0000-0002-7047-6042
- IdRef : 161447368
Alain Falvard
- Function : Author
- PersonId : 864513
Pascal Gay
- Function : Author
- PersonId : 829302
Pierre Henrard
- Function : Author
- PersonId : 829303
Pascal Perret
- Function : Author
- PersonId : 739797
- IdHAL : pascal-perret
- ORCID : 0000-0002-5732-4343
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