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e+e−→3 jets and event shapes at NNLO


Dissertori, G; Gehrmann-De Ridder, A; Gehrmann, T; Glover, E W N; Heinrich, G; Stenzel, H (2008). e+e−→3 jets and event shapes at NNLO. Nuclear Physics B - Proceedings Supplements, 183:2-7.

Abstract

We 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 αs 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.

Abstract

We 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 αs 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.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Physics Institute
Dewey Decimal Classification:530 Physics
Language:English
Date:October 2008
Deposited On:06 Mar 2009 11:13
Last Modified:21 Nov 2017 14:04
Publisher:Elsevier
ISSN:0920-5632
Publisher DOI:https://doi.org/10.1016/j.nuclphysbps.2008.09.072
Related URLs:http://arxiv.org/abs/0806.4601

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