Physics – High Energy Physics – High Energy Physics - Experiment
Scientific paper
2001-01-25
Eur.Phys.J.C20:601-615,2001
Physics
High Energy Physics
High Energy Physics - Experiment
29 pages, 4 figures, Submitted to Eur. Phys. J. C
Scientific paper
10.1007/s100520100699
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, alpha(s). 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.), alpha(s)(M_Z) = 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 alpha(s)(M_Z).
Abbiendi Giovanni
collaboration The OPAL
No associations
LandOfFree
A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Simultaneous Measurement of the QCD Colour Factors and the Strong Coupling will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-64654