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We present the properties of the C-parameter as an event-shape variable. We calculate the coupling constants in the perturbative and also in the non-perturbative parts of the QCD theory, using the dispersive as well as the shape function models. By fitting the corresponding theoretical predictions to our data, we find α s ( M Z 0 ) $\alpha _{\mathrm {s}} (M_{Z^{0}})$ = 0...
The average of the moments for event shapes in e + e− →hadrons within the context of next-to-leading order (NLO) perturbative QCD prediction in dispersive model is studied. Moments used in this article are , , and . We extract αs, the coupling constant in perturbative theory and α0...
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