NNLO QCD corrections to event shape variables in electron positron annihilation
arXiv:0709.4221 · doi:10.1088/1742-6596/110/2/022014
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.
Contributed to 2007 Europhysics Conference on High Energy Physics, Manchester, England 19-25 July 2007