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Measurement of electroweak parameters from Z decays into Fermion pairs

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Measurement of electroweak parameters from Z decays into Fermion pairs. / ALEPH Collaboration.
In: Zeitschrift für Physik C Particles and Fields, Vol. 48, No. 3, 1990, p. 365-391.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

ALEPH Collaboration 1990, 'Measurement of electroweak parameters from Z decays into Fermion pairs', Zeitschrift für Physik C Particles and Fields, vol. 48, no. 3, pp. 365-391. https://doi.org/10.1007/BF01572019

APA

ALEPH Collaboration (1990). Measurement of electroweak parameters from Z decays into Fermion pairs. Zeitschrift für Physik C Particles and Fields, 48(3), 365-391. https://doi.org/10.1007/BF01572019

Vancouver

ALEPH Collaboration. Measurement of electroweak parameters from Z decays into Fermion pairs. Zeitschrift für Physik C Particles and Fields. 1990;48(3):365-391. doi: 10.1007/BF01572019

Author

ALEPH Collaboration. / Measurement of electroweak parameters from Z decays into Fermion pairs. In: Zeitschrift für Physik C Particles and Fields. 1990 ; Vol. 48, No. 3. pp. 365-391.

Bibtex

@article{be4ae2284a344244947ffb3478772dce,
title = "Measurement of electroweak parameters from Z decays into Fermion pairs",
abstract = "We report on the properties of theZ resonance from 62 500Z decays into fermion pairs collected with the ALEPH detector at LEP, the Large Electron-Positron storage ring at CERN. We findM Z=(91.193±0.016exp±0.030LEP) GeV, Γ Z =(2497±31) MeV, σ had 0=(41.86±0.66)nb, and for the partial widths Γinv=(489±24) MeV, Γhad(1754±27) MeV, Γ ee =(85.0±1.6)MeV, Γ μμ =(80.0±2.5) MeV, and Γττ=(81.3±2.5) MeV, all in good agreement with the Standard Model. Assuming lepton universality and using a lepton sample without distinction of the final state we measure Γu=(84.3±1.3) MeV. The forward-backward asymmetry in leptonic decays is used to determine the vector and axial-vector weak coupling constants of leptors,g v 2(M Z 2)=(0.12±0.12)×10−2 andg A 2(M Z 2)=0.2528±0.0040. The number of light neutrino species isN ν=2.91±0.13; the electroweak mixing angle is sin2θW(M Z 2)=0.2291±0.0040.",
author = "D. Decamp and Alexander Finch and {ALEPH Collaboration}",
year = "1990",
doi = "10.1007/BF01572019",
language = "English",
volume = "48",
pages = "365--391",
journal = "Zeitschrift f{\"u}r Physik C Particles and Fields",
issn = "0170-9739",
publisher = "Springer Verlag",
number = "3",

}

RIS

TY - JOUR

T1 - Measurement of electroweak parameters from Z decays into Fermion pairs

AU - Decamp, D.

AU - Finch, Alexander

AU - ALEPH Collaboration

PY - 1990

Y1 - 1990

N2 - We report on the properties of theZ resonance from 62 500Z decays into fermion pairs collected with the ALEPH detector at LEP, the Large Electron-Positron storage ring at CERN. We findM Z=(91.193±0.016exp±0.030LEP) GeV, Γ Z =(2497±31) MeV, σ had 0=(41.86±0.66)nb, and for the partial widths Γinv=(489±24) MeV, Γhad(1754±27) MeV, Γ ee =(85.0±1.6)MeV, Γ μμ =(80.0±2.5) MeV, and Γττ=(81.3±2.5) MeV, all in good agreement with the Standard Model. Assuming lepton universality and using a lepton sample without distinction of the final state we measure Γu=(84.3±1.3) MeV. The forward-backward asymmetry in leptonic decays is used to determine the vector and axial-vector weak coupling constants of leptors,g v 2(M Z 2)=(0.12±0.12)×10−2 andg A 2(M Z 2)=0.2528±0.0040. The number of light neutrino species isN ν=2.91±0.13; the electroweak mixing angle is sin2θW(M Z 2)=0.2291±0.0040.

AB - We report on the properties of theZ resonance from 62 500Z decays into fermion pairs collected with the ALEPH detector at LEP, the Large Electron-Positron storage ring at CERN. We findM Z=(91.193±0.016exp±0.030LEP) GeV, Γ Z =(2497±31) MeV, σ had 0=(41.86±0.66)nb, and for the partial widths Γinv=(489±24) MeV, Γhad(1754±27) MeV, Γ ee =(85.0±1.6)MeV, Γ μμ =(80.0±2.5) MeV, and Γττ=(81.3±2.5) MeV, all in good agreement with the Standard Model. Assuming lepton universality and using a lepton sample without distinction of the final state we measure Γu=(84.3±1.3) MeV. The forward-backward asymmetry in leptonic decays is used to determine the vector and axial-vector weak coupling constants of leptors,g v 2(M Z 2)=(0.12±0.12)×10−2 andg A 2(M Z 2)=0.2528±0.0040. The number of light neutrino species isN ν=2.91±0.13; the electroweak mixing angle is sin2θW(M Z 2)=0.2291±0.0040.

U2 - 10.1007/BF01572019

DO - 10.1007/BF01572019

M3 - Journal article

VL - 48

SP - 365

EP - 391

JO - Zeitschrift für Physik C Particles and Fields

JF - Zeitschrift für Physik C Particles and Fields

SN - 0170-9739

IS - 3

ER -