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

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

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dc.contributor.author ALEPH Collaboration
dc.contributor.author DELPHI Collaboration
dc.contributor.author OPAL Collaboration
dc.contributor.author LEP Electroweak Working Group
dc.contributor.author Costa Mezquita, María José
dc.contributor.author Ferrer Soria, Antonio
dc.contributor.author Fuster Verdú, Juan A.
dc.contributor.author García García, Carmen
dc.contributor.author Oyanguren Campos, Arantza
dc.contributor.author Perepelitsa, V.
dc.contributor.author Salt Cairols, José
dc.contributor.author Tortosa Martínez, Pablo
dc.date.accessioned 2014-04-01T08:29:12Z
dc.date.available 2014-04-01T08:29:12Z
dc.date.issued 2013
dc.identifier.uri http://dx.doi.org/10.1016/j.physrep.2013.07.004
dc.identifier.uri http://hdl.handle.net/10550/33909
dc.description.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, 13 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 -> had), and the trilinear gauge-boson self-couplings g(1)(Z), K-gamma and lambda(gamma), are determined to be: m(w) = 80.376 +/- 0.033 GeV Gamma(w) = 2.195 +/- 0.083 GeV B(W -> had) = 67.41 +/- 0.27% g(1)(Z) = 0.984(-0.020)(+0.018) K-gamma ¿ 0.982 +/- 0.042 lambda(gamma) = 0.022 +/- 0.019.
dc.relation.ispartof Physics Reports-Review Section of Physics Letters, 2013, vol. 532, num. 4, p. 119-244
dc.rights.uri info:eu-repo/semantics/openAccess
dc.source ALEPH Collaboration DELPHI Collaboration OPAL Collaborations LEP Electroweak Working Group Costa Mezquita, María José Ferrer Soria, Antonio Fuster Verdú, Juan A. García García, Carmen Oyanguren Campos, Arantza Perepelitsa, V. Salt Cairols, José Tortosa Martínez, Pablo 2013 Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP Physics Reports-Review Section of Physics Letters 532 4 119 244
dc.subject Física nuclear
dc.subject Partícules (Física nuclear)
dc.subject Col·lisions (Física nuclear)
dc.title Electroweak measurements in electron positron collisions at W-boson-pair energies at LEP
dc.type info:eu-repo/semantics/article
dc.date.updated 2014-04-01T08:29:12Z
dc.identifier.doi http://dx.doi.org/10.1016/j.physrep.2013.07.004
dc.identifier.idgrec 094080

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