Electroweak measurements in electron-positron collisions at W-boson-pair energies at LEP
- Author(s): Schael, S;
- Barate, R;
- Brunelière, R;
- Buskulic, D;
- De Bonis, I;
- Decamp, D;
- Ghez, P;
- Goy, C;
- Jézéquel, S;
- Lees, JP;
- Lucotte, A;
- Martin, F;
- Merle, E;
- Minard, MN;
- Nief, JY;
- Odier, P;
- Pietrzyk, B;
- Trocmé, B;
- Bravo, S;
- Casado, MP;
- Chmeissani, M;
- Comas, P;
- Crespo, JM;
- Fernandez, E;
- Fernandez-Bosman, M;
- Garrido, L;
- Grauges, E;
- Juste, A;
- Martinez, M;
- Merino, G;
- Miquel, R;
- Mir, LM;
- Orteu, S;
- Pacheco, A;
- Park, IC;
- Perlas, J;
- Riu, I;
- Ruiz, H;
- Sanchez, F;
- Colaleo, A;
- Creanza, D;
- De Filippis, N;
- de Palma, M;
- Iaselli, G;
- Maggi, G;
- Maggi, M;
- Nuzzo, S;
- Ranieri, A;
- Raso, G;
- Ruggieri, F;
- Selvaggi, G;
- Silvestris, L;
- Tempesta, P;
- Tricomi, A;
- Zito, G;
- Huang, X;
- Lin, J;
- Ouyang, Q;
- Wang, T;
- Xie, Y;
- Xu, R;
- Xue, S;
- Zhang, J;
- Zhang, L;
- Zhao, W;
- Abbaneo, D;
- Bazarko, A;
- Becker, U;
- Boix, G;
- Bird, F;
- Blucher, E;
- Bonvicini, B;
- Bright-Thomas, P;
- Barklow, T;
- Buchmüller, O;
- Cattaneo, M;
- Cerutti, F;
- Ciulli, V;
- Clerbaux, B;
- Drevermann, H;
- Forty, RW;
- Frank, M;
- Greening, TC;
- Hagelberg, R;
- Halley, AW;
- Gianotti, F;
- Girone, M;
- Hansen, JB;
- Harvey, J;
- Jacobsen, R;
- Hutchcroft, DE;
- Janot, P;
- Jost, B;
- Knobloch, J;
- Kado, M;
- Lehraus, I;
- Lazeyras, P;
- Maley, P;
- Mato, P;
- May, J
- et al.
Published Web Location
https://doi.org/10.1016/j.physrep.2013.07.004Abstract
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.
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