Scheme-invariant NNLO evolution for unpolarized DIS structure functions

Abstract

We discuss the combination of NNLO standard QCD evolution and scheme-invariant analysis for unpolarized DIS structure functions data as a method to reduce the theoretical errors on the determination of ${\alpha }_s(M_Z^2)$ to $\sim 1$% in order to match the accuracy forseen for experimental errors from future high statistics measurements.

Comments: 6 pages, 1 LaTeX file, 2 eps figures, 1 style file. Contribution to the proceedings of the "11th International QCD Conference: QCD04", Montpellier, France, 5-10 July 2004