arXiv:0709.4221·v1·High Energy Physics — Phenomenology
NNLO QCD corrections to event shape variables in electron positron annihilation
A. Gehrmann-De Ridder (Zurich, ETH)🇨🇭 · T. Gehrmann (Zurich U.)🇨🇭 · E.W.N. Glover (Durham U., IPPP)🇬🇧 · G. Heinrich (Edinburgh U.)🇬🇧
Abstract
Precision studies of QCD at electron-positron colliders are based on measurements of event shapes and jet rates. To match the high experimental accuracy, theoretical predictions to next-to-next-to-leading order (NNLO) in QCD are needed for a reliable interpretation of the data. We report the first calculation of NNLO corrections O(alpha_s^3) to three-jet production and related event shapes, and discuss their phenomenological impact.
Comments: Contributed to 2007 Europhysics Conference on High Energy Physics, Manchester, England 19-25 July 2007