On the Resummation of $α\ln^2 x$ Terms for Non-Singlet Structure Functions in QED and QCD

Abstract

The resummation of $O(α^{l+1} \ln^{2l} x)$ terms in the evolution kernels of non--singlet combinations of structure functions is investigated for both QED abd QCD. Numerical results are presented for unpolarized and polarized structure functions.

11 pages Latex, inclding two eps-figures, all compressed by uufiles, Invited talk at the Cracow Epiphany Conference on Proton Structure, 5--6 January 1996, Krak'ow, Poland, presented by J. Blümlein; to appear in Acta Physica Polonica