We discuss the calculation of the nf-contributions to the two-loop amplitude for e+ e- -> q qbar g. The calculation uses an efficient method based on nested sums. The result is presented in terms of multiple polylogarithms with simple arguments, which allow for analytic continuation in a straightforward manner.
@article{arxiv.hep-ph/0207167,
title = {Two-loop amplitudes for e+ e- -> q qbar g: the nf-contribution},
author = {S. Moch and P. Uwer and S. Weinzierl},
journal= {arXiv preprint arXiv:hep-ph/0207167},
year = {2007}
}
Comments
Latex, 5 pages, Presented at DIS2002, Cracow, 30 April - 4 May 2002