Matching of Resummed NLLA with Fixed NNLO for Event Shapes

Authors :: Gehrmann, T.
Luisoni, G.
Stenzel, H.
Publication Year :: 2008
Abstract: We report work on the matching of the next-to-leading logarithmic approximation (NLLA) onto the fixed next-to-next-to-leading order (NNLO) calculation for event shape variables in electron-positron annihilation. The correction of the combined NLLA+NNLO computation in the three-jet region, relevant for precision phenomenology, is small compared with pure NNLO or NLLA+NLO.<br />Comment: Proceedings of a parallel talk at ICHEP08, Philadelphia, USA, July 2008. 4 pages, LaTeX