Deep-inelastic structure functions at two loops

We present the analytic calculation of the Merlin moments of the structure functions F-2, F-3 and F-L in perturbative QCD up to second-order corrections and in reading twist approximation. We calculate the two-loop contributions to the anomalous dimensions of the singlet and non-singlet operator matrix elements and the two-loop coefficient functions of F-2, F-3 and F-L. We perform the inverse Mellin transformation analytically and find our results in agreement with earlier calculations in the literature by Zijlstra and van Neerven. (C) 2000 Elsevier Science B.V. All rights reserved.