Leptonic O(α2L) radiative corrections to deep-inelastic ep scattering in mixed variables

The leptonic QED radiative corrections are calculated in the next-to-leading log approximation O[α2ln(Q2/me2)] for unpolarized deeply inelastic ep scattering e±p→e±X in the case of mixed variables. The corrections are determined using mass factorization in the OMS-scheme for the double-differential scattering cross sections. We consider the corrections for momentum transfers to the nucleon Q2h⩾Q02.