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Update of electroweak parameters fromZ decays

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Update of electroweak parameters fromZ decays. / ALEPH Collaboration.
In: Zeitschrift für Physik C Particles and Fields, Vol. 60, No. 1, 1993, p. 71-81.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

ALEPH Collaboration 1993, 'Update of electroweak parameters fromZ decays', Zeitschrift für Physik C Particles and Fields, vol. 60, no. 1, pp. 71-81. https://doi.org/10.1007/BF01650432

APA

ALEPH Collaboration (1993). Update of electroweak parameters fromZ decays. Zeitschrift für Physik C Particles and Fields, 60(1), 71-81. https://doi.org/10.1007/BF01650432

Vancouver

ALEPH Collaboration. Update of electroweak parameters fromZ decays. Zeitschrift für Physik C Particles and Fields. 1993;60(1):71-81. doi: 10.1007/BF01650432

Author

ALEPH Collaboration. / Update of electroweak parameters fromZ decays. In: Zeitschrift für Physik C Particles and Fields. 1993 ; Vol. 60, No. 1. pp. 71-81.

Bibtex

@article{dcb2ff28f97e4a7aa9489d56bc1afafe,
title = "Update of electroweak parameters fromZ decays",
abstract = "Based on 520 000 fermion pairs accumulated during the first three years of data collection by the ALEPH detector at LEP, updated values of the resonance parameters of theZ are determined to beMZ=(91.187±0.009) GeV, ΓZ=(2.501±0.012) GeV, σhad0=(41.60±0.27) nb, andRℓ=20.78±0.13. The corresponding number of light neutrino species isNν=2.97±0.05. The forward-backward asymmetry in lepton-pair decays is used to determine the ratio of vector to axial-vector couplings of leptons:gV2(MZ2)/gA2(MZ2)=0.0052±0.0016. Combining this with ALEPH measurements of theb andc quark asymmetries and τ polarization gives sin2θWeff=0.2326±0.0013. Assuming the minimal Standard Model, and including measurements ofMW/MZ frompp ¯ colliders and neutrino-nucleon scattering, the mass of the top quark isM top =156±22 25 ±17 22Higgs GeV.",
author = "D. Buskulic and Alexander Finch and {ALEPH Collaboration}",
year = "1993",
doi = "10.1007/BF01650432",
language = "English",
volume = "60",
pages = "71--81",
journal = "Zeitschrift f{\"u}r Physik C Particles and Fields",
issn = "0170-9739",
publisher = "Springer Verlag",
number = "1",

}

RIS

TY - JOUR

T1 - Update of electroweak parameters fromZ decays

AU - Buskulic, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1993

Y1 - 1993

N2 - Based on 520 000 fermion pairs accumulated during the first three years of data collection by the ALEPH detector at LEP, updated values of the resonance parameters of theZ are determined to beMZ=(91.187±0.009) GeV, ΓZ=(2.501±0.012) GeV, σhad0=(41.60±0.27) nb, andRℓ=20.78±0.13. The corresponding number of light neutrino species isNν=2.97±0.05. The forward-backward asymmetry in lepton-pair decays is used to determine the ratio of vector to axial-vector couplings of leptons:gV2(MZ2)/gA2(MZ2)=0.0052±0.0016. Combining this with ALEPH measurements of theb andc quark asymmetries and τ polarization gives sin2θWeff=0.2326±0.0013. Assuming the minimal Standard Model, and including measurements ofMW/MZ frompp ¯ colliders and neutrino-nucleon scattering, the mass of the top quark isM top =156±22 25 ±17 22Higgs GeV.

AB - Based on 520 000 fermion pairs accumulated during the first three years of data collection by the ALEPH detector at LEP, updated values of the resonance parameters of theZ are determined to beMZ=(91.187±0.009) GeV, ΓZ=(2.501±0.012) GeV, σhad0=(41.60±0.27) nb, andRℓ=20.78±0.13. The corresponding number of light neutrino species isNν=2.97±0.05. The forward-backward asymmetry in lepton-pair decays is used to determine the ratio of vector to axial-vector couplings of leptons:gV2(MZ2)/gA2(MZ2)=0.0052±0.0016. Combining this with ALEPH measurements of theb andc quark asymmetries and τ polarization gives sin2θWeff=0.2326±0.0013. Assuming the minimal Standard Model, and including measurements ofMW/MZ frompp ¯ colliders and neutrino-nucleon scattering, the mass of the top quark isM top =156±22 25 ±17 22Higgs GeV.

U2 - 10.1007/BF01650432

DO - 10.1007/BF01650432

M3 - Journal article

VL - 60

SP - 71

EP - 81

JO - Zeitschrift für Physik C Particles and Fields

JF - Zeitschrift für Physik C Particles and Fields

SN - 0170-9739

IS - 1

ER -