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W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV

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W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV. / OPAL Collaboration.

In: European Physical Journal C: Particles and Fields, Vol. 8, No. 2, 04.1999, p. 191-215.

Research output: Contribution to journalJournal articlepeer-review

Harvard

OPAL Collaboration 1999, 'W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV', European Physical Journal C: Particles and Fields, vol. 8, no. 2, pp. 191-215. https://doi.org/10.1007/s100529901106

APA

OPAL Collaboration (1999). W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV. European Physical Journal C: Particles and Fields, 8(2), 191-215. https://doi.org/10.1007/s100529901106

Vancouver

OPAL Collaboration. W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV. European Physical Journal C: Particles and Fields. 1999 Apr;8(2):191-215. https://doi.org/10.1007/s100529901106

Author

OPAL Collaboration. / W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV. In: European Physical Journal C: Particles and Fields. 1999 ; Vol. 8, No. 2. pp. 191-215.

Bibtex

@article{33103b6cb1e046b6a045dae020963c99,
title = "W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV",
abstract = "A study of W-pair production in e+e−e+e− annihilations at LEP is presented, based on 877W+W−877W+W− candidates corresponding to an integrated luminosity of 57 pb −1−1 at s√=183s=183 GeV. Assuming that the angular distributions of the W-pair production and decay, as well as their branching fractions, are described by the Standard Model, the W-pair production cross-section is measured to be 15.43±0.61(stat.)±0.26(syst.)15.43±0.61(stat.)±0.26(syst.) pb. Assuming lepton universality and combining with our results from lower centre-of-mass energies, the W branching fraction to hadrons is determined to be 67.9±1.2(stat.)±0.5(syst.)67.9±1.2(stat.)±0.5(syst.) %. The number of W-pair candidates and the angular distributions for each final state ( qq¯ℓ¯νℓqq¯ℓ¯νℓ , qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′)qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′) are used to determine the triple gauge boson couplings. After combining these values with our results from lower centre-of-mass energies we obtain Δκγ=0.11+0.52−0.37Δκγ=0.11−0.37+0.52 , Δgz1=0.01+0.13−0.12Δg1z=0.01−0.12+0.13 and λ=−0.10+0.13−0.12λ=−0.10−0.12+0.13 , where the errors include both statistical and systematic uncertainties and each coupling is determined by setting the other two couplings to the Standard Model value. The fraction of W bosons produced with a longitudinal polarisation is measured to be 0.242±0.091(stat.)±0.023(syst.)0.242±0.091(stat.)±0.023(syst.) . All these measurements are consistent with the Standard Model expectations.",
author = "Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "1999",
month = apr,
doi = "10.1007/s100529901106",
language = "English",
volume = "8",
pages = "191--215",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "2",

}

RIS

TY - JOUR

T1 - W+W− production and triple gauge boson couplings at LEP energies up to 183 GeV

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 1999/4

Y1 - 1999/4

N2 - A study of W-pair production in e+e−e+e− annihilations at LEP is presented, based on 877W+W−877W+W− candidates corresponding to an integrated luminosity of 57 pb −1−1 at s√=183s=183 GeV. Assuming that the angular distributions of the W-pair production and decay, as well as their branching fractions, are described by the Standard Model, the W-pair production cross-section is measured to be 15.43±0.61(stat.)±0.26(syst.)15.43±0.61(stat.)±0.26(syst.) pb. Assuming lepton universality and combining with our results from lower centre-of-mass energies, the W branching fraction to hadrons is determined to be 67.9±1.2(stat.)±0.5(syst.)67.9±1.2(stat.)±0.5(syst.) %. The number of W-pair candidates and the angular distributions for each final state ( qq¯ℓ¯νℓqq¯ℓ¯νℓ , qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′)qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′) are used to determine the triple gauge boson couplings. After combining these values with our results from lower centre-of-mass energies we obtain Δκγ=0.11+0.52−0.37Δκγ=0.11−0.37+0.52 , Δgz1=0.01+0.13−0.12Δg1z=0.01−0.12+0.13 and λ=−0.10+0.13−0.12λ=−0.10−0.12+0.13 , where the errors include both statistical and systematic uncertainties and each coupling is determined by setting the other two couplings to the Standard Model value. The fraction of W bosons produced with a longitudinal polarisation is measured to be 0.242±0.091(stat.)±0.023(syst.)0.242±0.091(stat.)±0.023(syst.) . All these measurements are consistent with the Standard Model expectations.

AB - A study of W-pair production in e+e−e+e− annihilations at LEP is presented, based on 877W+W−877W+W− candidates corresponding to an integrated luminosity of 57 pb −1−1 at s√=183s=183 GeV. Assuming that the angular distributions of the W-pair production and decay, as well as their branching fractions, are described by the Standard Model, the W-pair production cross-section is measured to be 15.43±0.61(stat.)±0.26(syst.)15.43±0.61(stat.)±0.26(syst.) pb. Assuming lepton universality and combining with our results from lower centre-of-mass energies, the W branching fraction to hadrons is determined to be 67.9±1.2(stat.)±0.5(syst.)67.9±1.2(stat.)±0.5(syst.) %. The number of W-pair candidates and the angular distributions for each final state ( qq¯ℓ¯νℓqq¯ℓ¯νℓ , qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′)qq¯qq¯,ℓ¯νℓℓ′ν¯ℓ′) are used to determine the triple gauge boson couplings. After combining these values with our results from lower centre-of-mass energies we obtain Δκγ=0.11+0.52−0.37Δκγ=0.11−0.37+0.52 , Δgz1=0.01+0.13−0.12Δg1z=0.01−0.12+0.13 and λ=−0.10+0.13−0.12λ=−0.10−0.12+0.13 , where the errors include both statistical and systematic uncertainties and each coupling is determined by setting the other two couplings to the Standard Model value. The fraction of W bosons produced with a longitudinal polarisation is measured to be 0.242±0.091(stat.)±0.023(syst.)0.242±0.091(stat.)±0.023(syst.) . All these measurements are consistent with the Standard Model expectations.

U2 - 10.1007/s100529901106

DO - 10.1007/s100529901106

M3 - Journal article

VL - 8

SP - 191

EP - 215

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 2

ER -