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Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays

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Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays. / Buskulic, D.; Finch, Alexander.
In: Zeitschrift für Physik C Particles and Fields, Vol. 71, No. 3, 1996, p. 357-378.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

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Buskulic, D & Finch, A 1996, 'Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays', Zeitschrift für Physik C Particles and Fields, vol. 71, no. 3, pp. 357-378. https://doi.org/10.1007/s002880050183

APA

Vancouver

Buskulic D, Finch A. Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays. Zeitschrift für Physik C Particles and Fields. 1996;71(3):357-378. doi: 10.1007/s002880050183

Author

Buskulic, D. ; Finch, Alexander. / Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays. In: Zeitschrift für Physik C Particles and Fields. 1996 ; Vol. 71, No. 3. pp. 357-378.

Bibtex

@article{cffcf45a63244f3babb28bc6d0d7ca18,
title = "Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays",
abstract = "The electroweak mixing angle is determined with high precision from measurements of the mean difference between forward and backward hemisphere charges in hadronic decays of the Z. A data sample of 2.5 million hadronic Z decays recorded over the period 1990 to 1994 in the ALEPH detector at LEP is used. The mean charge separation between event hemispheres containing the original quark and antiquark is measured forbb ¯ andcc ¯ events in subsamples selected by their long lifetimes or using fastD*{\textquoteright}s. The corresponding average charge separation for light quarks is measured in an inclusive sample from the anticorrelation between charges of opposite hemispheres and agrees with predictions of hadronisation models with a precision of 2%. It is shown that differences between light quark charge separations and the measured average can be determined using hadronisation models, with systematic uncertainties constrained by measurements of inclusive production of kaons, protons andΛ{\textquoteright}s. The separations are used to measure the electroweak mixing angle precisely as sin2ϑweff=0.2322±0.0008(exp.stat.) ±0.0007(exp.syst.)±0.0008(sep.). The first two errors are due to purely experimental sources whereas the third stems from uncertainties in the quark charge separations.",
author = "D. Buskulic and Alexander Finch",
year = "1996",
doi = "10.1007/s002880050183",
language = "English",
volume = "71",
pages = "357--378",
journal = "Zeitschrift f{\"u}r Physik C Particles and Fields",
issn = "0170-9739",
publisher = "Springer Verlag",
number = "3",

}

RIS

TY - JOUR

T1 - Determination of sin**2 theta(w)(eff) using jet charge measurements in hadronic Z decays

AU - Buskulic, D.

AU - Finch, Alexander

PY - 1996

Y1 - 1996

N2 - The electroweak mixing angle is determined with high precision from measurements of the mean difference between forward and backward hemisphere charges in hadronic decays of the Z. A data sample of 2.5 million hadronic Z decays recorded over the period 1990 to 1994 in the ALEPH detector at LEP is used. The mean charge separation between event hemispheres containing the original quark and antiquark is measured forbb ¯ andcc ¯ events in subsamples selected by their long lifetimes or using fastD*’s. The corresponding average charge separation for light quarks is measured in an inclusive sample from the anticorrelation between charges of opposite hemispheres and agrees with predictions of hadronisation models with a precision of 2%. It is shown that differences between light quark charge separations and the measured average can be determined using hadronisation models, with systematic uncertainties constrained by measurements of inclusive production of kaons, protons andΛ’s. The separations are used to measure the electroweak mixing angle precisely as sin2ϑweff=0.2322±0.0008(exp.stat.) ±0.0007(exp.syst.)±0.0008(sep.). The first two errors are due to purely experimental sources whereas the third stems from uncertainties in the quark charge separations.

AB - The electroweak mixing angle is determined with high precision from measurements of the mean difference between forward and backward hemisphere charges in hadronic decays of the Z. A data sample of 2.5 million hadronic Z decays recorded over the period 1990 to 1994 in the ALEPH detector at LEP is used. The mean charge separation between event hemispheres containing the original quark and antiquark is measured forbb ¯ andcc ¯ events in subsamples selected by their long lifetimes or using fastD*’s. The corresponding average charge separation for light quarks is measured in an inclusive sample from the anticorrelation between charges of opposite hemispheres and agrees with predictions of hadronisation models with a precision of 2%. It is shown that differences between light quark charge separations and the measured average can be determined using hadronisation models, with systematic uncertainties constrained by measurements of inclusive production of kaons, protons andΛ’s. The separations are used to measure the electroweak mixing angle precisely as sin2ϑweff=0.2322±0.0008(exp.stat.) ±0.0007(exp.syst.)±0.0008(sep.). The first two errors are due to purely experimental sources whereas the third stems from uncertainties in the quark charge separations.

U2 - 10.1007/s002880050183

DO - 10.1007/s002880050183

M3 - Journal article

VL - 71

SP - 357

EP - 378

JO - Zeitschrift für Physik C Particles and Fields

JF - Zeitschrift für Physik C Particles and Fields

SN - 0170-9739

IS - 3

ER -