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A measurement of the QCD colour factor ratiosC A /C F andT F /C F from angular correlations in four-jet events

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Zeitschrift für Physik C Particles and Fields

Abstract

From 1 105 045 hadronic Z0 decays observed with the OPAL detector at the LEP e+e collider, 21 732 four-jet events are selected. A simultaneous fit of three selected angular variables from these events by the second order QCD matrix element calculation yieldsC A /C F =2.11±0.16(stat.)±0.28(syst.)T F /C F =0.40±0.11(stat.)±0.14(syst.) for the ratios of colour factors, in agreement with SU(3) expectations ofC A /C F =9/4 andT F /C F =3/8.

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OPAL Collaboration., Akers, R., Alexander, G. et al. A measurement of the QCD colour factor ratiosC A /C F andT F /C F from angular correlations in four-jet events. Z. Phys. C - Particles and Fields 65, 367–377 (1995). https://doi.org/10.1007/BF01556127

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  • DOI: https://doi.org/10.1007/BF01556127

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