Abstract
We present a new implementation of the NNLO QCD corrections to three-jet final states and related event-shape observables in electron–positron annihilation. Our implementation is based on the antenna subtraction method, and is performed in the NNLOjet framework. The calculation improves upon earlier results by taking into account the full kinematical information on the initial state momenta, thereby allowing the event orientation to be computed to NNLO accuracy. We find the event-orientation distributions at LEP and SLC to be very robust under higher order QCD corrections.
Highlights
We present a new implementation of the NNLO quantum chromodynamics (QCD) corrections to three-jet final states and related event-shape observables in electron–positron annihilation
We find that the event orientation distributions are extremely robust under QCD corrections
When aiming for per-mille level precision in QCD measurements at a future Z factory, these corrections will become of relevance, and it should be considered to concentrate on measurements and interpretation of fiducial cross sections instead of extrapolating to full acceptance
Summary
Citation for published item: Gehrmann, T. and Glover, E.W.N. and Huss, A. and Niehues, J. and Zhang, H. (2017) 'NNLO QCD corrections to event orientation in e+e- annihilation.', Physics letters B., 775 . pp. 185-189. Citation for published item: Gehrmann, T. and Glover, E.W.N. and Huss, A. and Niehues, J. and Zhang, H. The full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:. A full bibliographic reference is made to the original source a link is made to the metadata record in DRO the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders. Please consult the full DRO policy for further details. Durham University Library, Stockton Road, Durham DH1 3LY, United Kingdom Tel : +44 (0)191 334 3042 | Fax : +44 (0)191 334 2971 https://dro.dur.ac.uk
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