Event shapes in $e^+e^-$ annhilation at NNLO
High Energy Physics - Phenomenology
2008-12-30 v1
Abstract
We report first results on the calculation of NNLO corrections to event shape distributions in electron-positron annhilation. The corrections are sizeable for all variables, however their magnitude 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 normalisation of the event shape distributions.
Cite
@article{arxiv.0801.2680,
title = {Event shapes in $e^+e^-$ annhilation at NNLO},
author = {A. Gehrmann-De Ridder and T. Gehrmann and E. W. N. Glover and G. Heinrich},
journal= {arXiv preprint arXiv:0801.2680},
year = {2008}
}
Comments
6 pages, contribution to the Proceedings of RADCOR07, Florence