Sfb/cpp-03-29 Nll Qed Corrections to Deep Inelastic Scattering ∗

Deep inelastic scattering provides us with detailed information on the nucleon structure. In order to extract the parton distribution functions from DIS cross sections and to measure αs(M 2 Z) with high precision it is crucial to control the QED radiative corrections. The 1– and 2–loop leading–log QED corrections were derived in Ref. [1–3]. Complete 1-loop corrections for DIS were given in Refs. [4]. Furthermore the universal leading logarithmic corrections were derived to O((αL)) both for polarized and unpolarized processes in [5], where also the resummation of the O((α ln(z))k) for polarized scattering was given. In this paper, we summarize our recent results of NLO leptonic QED corrections in mixed variables [7].