Tests of Power Corrections to Event Shape Distributions from e+e- Annihilation

Simple item page
dc.creatorFernández, P. A. Movilla
dc.creatorBiebel, O.
dc.creatorBethke, S.
dc.date1999-06-23
dc.date.accessioned2026-07-07T03:37:57Z
dc.date.available2026-07-07T03:37:57Z
dc.descriptionA study of differential event shape distributions using e+e- data at centre-of-mass energies of 35 to 183 GeV is presented. We investigated non-perturbative power corrections for the thrust, C-parameter, total and wide jet broadening observables. We observe a good description of the distributions by the combined resummed QCD calculations plus power corrections from the dispersive approach. The single non-perturbative parameter α_0 is measured to be α_0 (2 GeV) = 0.502 +- 0.013 (stat.) ^{+0.046)_{-0.032} (exp. syst.) ^{+0.074}_{-0.053} (theo. syst.) and is found to be universal for the observables studied within the given systematic uncertainties. Using revised calculations of the power corrections for the jet broadening variables, improved consistency of the individual fit results is obtained. Agreement is also found with results extracted from the mean values of event shape distributions.
dc.description19 pages, LaTeX2e, 8 .eps-files included, paper contributed to the EPS-HEP99 conference in Tampere, Finland
dc.identifierhttps://arxiv.org/abs/hep-ex/9906033
dc.identifierhttp://arxiv.org/abs/hep-ex/9906033
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/38328
dc.subjectHigh Energy Physics - Experiment
dc.titleTests of Power Corrections to Event Shape Distributions from e+e- Annihilation
dc.typetext

Files

Collections

arXiv