e^+ e^- -> 3 jets and event shapes at NNLO

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dc.creatorDissertori, G.
dc.creatorRidder, A. Gehrmann-De
dc.creatorGehrmann, T.
dc.creatorGlover, E. W. N.
dc.creatorHeinrich, G.
dc.creatorStenzel, H.
dc.date2008-06-27
dc.date.accessioned2026-07-07T11:52:06Z
dc.date.available2026-07-07T11:52:06Z
dc.descriptionWe report on the calculation of NNLO corrections to the 3-jet cross section and related event shape distributions in electron-positron annihilation. The corrections are sizable for all variables, however the magnitude of the corrections is substantially different for different observables. We observe that inclusion of the NNLO corrections yields a considerably better agreement between theory and experimental data both in shape and normalization of the event shape distributions in the region where the perturbative result is expected to hold. A new extraction of $α_{s}$ using the event shape variables up to NNLO yields a considerably better consistency between the observables indicating a stabilization of the perturbative corrections at this order.
dc.descriptionContribution to the Proceedings of the 9th DESY workshop on "Loops and Legs in Quantum Field Theory", Sondershausen, April 2008
dc.identifierhttps://arxiv.org/abs/0806.4601
dc.identifierhttp://arxiv.org/abs/0806.4601
dc.identifierNucl.Phys.Proc.Suppl.183:2-7,2008
dc.identifierdoi:10.1016/j.nuclphysbps.2008.09.072
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/204115
dc.subjectHigh Energy Physics - Phenomenology
dc.titlee^+ e^- -> 3 jets and event shapes at NNLO
dc.typetext

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