Event shapes in e⁺e^- annhilation at NNLO

2008/01/17 by A. Gehrmann-De Ridder, T. Gehrmann, E. W. N. Glover +1 · 1 citation
Physics and Astronomy · #hep-ph

paper · pdf

published as PoS RADCOR2007:048,2007 · 6 pages, contribution to the Proceedings of RADCOR07, Florence

arxiv created 2008/01/17 · arxiv updated 2009/12/01

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.

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