Two-loop amplitudes for e+ e- -> q qbar g: the nf-contribution

Abstract

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.

Comments: Latex, 5 pages, Presented at DIS2002, Cracow, 30 April - 4 May 2002