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A simultaneous measurement of the QCD colour factors and the strong coupling

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A simultaneous measurement of the QCD colour factors and the strong coupling. / OPAL Collaboration.
In: European Physical Journal C: Particles and Fields, Vol. 20, No. 4, 05.2001, p. 601-615.

Research output: Contribution to Journal/MagazineJournal articlepeer-review

Harvard

OPAL Collaboration 2001, 'A simultaneous measurement of the QCD colour factors and the strong coupling', European Physical Journal C: Particles and Fields, vol. 20, no. 4, pp. 601-615. https://doi.org/10.1007/s100520100699

APA

OPAL Collaboration (2001). A simultaneous measurement of the QCD colour factors and the strong coupling. European Physical Journal C: Particles and Fields, 20(4), 601-615. https://doi.org/10.1007/s100520100699

Vancouver

OPAL Collaboration. A simultaneous measurement of the QCD colour factors and the strong coupling. European Physical Journal C: Particles and Fields. 2001 May;20(4):601-615. doi: 10.1007/s100520100699

Author

OPAL Collaboration. / A simultaneous measurement of the QCD colour factors and the strong coupling. In: European Physical Journal C: Particles and Fields. 2001 ; Vol. 20, No. 4. pp. 601-615.

Bibtex

@article{9d2520773f8040c3b64379ccef1c5314,
title = "A simultaneous measurement of the QCD colour factors and the strong coupling",
abstract = "Using data from e+e− annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results,CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.),αs(MZ )=0.120 ± 0.011(stat.) ± 0.020(syst.),provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(MZ).",
author = "Bailey, {Ian Richard} and Vakhtang Kartvelishvili and {OPAL Collaboration}",
year = "2001",
month = may,
doi = "10.1007/s100520100699",
language = "English",
volume = "20",
pages = "601--615",
journal = "European Physical Journal C: Particles and Fields",
issn = "1434-6044",
publisher = "SPRINGER",
number = "4",

}

RIS

TY - JOUR

T1 - A simultaneous measurement of the QCD colour factors and the strong coupling

AU - Bailey, Ian Richard

AU - Kartvelishvili, Vakhtang

AU - OPAL Collaboration

PY - 2001/5

Y1 - 2001/5

N2 - Using data from e+e− annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results,CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.),αs(MZ )=0.120 ± 0.011(stat.) ± 0.020(syst.),provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(MZ).

AB - Using data from e+e− annihilation into hadrons, taken with the OPAL detector at LEP at the Z pole between 1991 and 1995, we performed a simultaneous measurement of the colour factors of the underlying gauge group of the strong interaction, CF and CA, and the strong coupling, αs. The measurement was carried out by fitting next-to-leading order perturbative predictions to measured angular correlations of 4-jet events together with multi-jet related variables. Our results,CA = 3.02 ± 0.25(stat.) ± 0.49(syst.), CF = 1.34 ± 0.13(stat.) ± 0.22(syst.),αs(MZ )=0.120 ± 0.011(stat.) ± 0.020(syst.),provide a test of perturbative QCD in which the only assumptions are non-abelian gauge symmetry and standard hadronization models. The measurements are in agreement with SU(3) expectations for CF and CA and the world average of αs(MZ).

U2 - 10.1007/s100520100699

DO - 10.1007/s100520100699

M3 - Journal article

VL - 20

SP - 601

EP - 615

JO - European Physical Journal C: Particles and Fields

JF - European Physical Journal C: Particles and Fields

SN - 1434-6044

IS - 4

ER -