Paper
Two-Loop Soft Corrections and Resummation of the Thrust Distribution in the Dijet Region
Authors
Pier Francesco Monni, Thomas Gehrmann, Gionata Luisoni
Abstract
The thrust distribution in electron-positron annihilation is a classical precision QCD observable. Using renormalization group (RG) evolution in Laplace space, we perform the resummation of logarithmically enhanced corrections in the dijet limit, to next-to-next-to-leading logarithmic (NNLL) accuracy. We independently derive the two-loop soft function for the thrust distribution and extract an analytical expression for the NNLL resummation coefficient . To combine the resummed expressions with the fixed-order results, we derive the -matching and -matching of the NNLL approximation to the fixed-order NNLO distribution.