Matching of Resummed NLLA with Fixed NNLO for Event Shapes
T. Gehrmann, Gionata Luisoni, Hasko Stenzel · arXiv (Cornell University) · 2008
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.