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We provide a complete and consistent framework to include subasymptoticperturbative as well as mass corrections to the leading twist (tau=2)evaluation of charged and neutral current weak structure functions and theperturbative neutrino cross sections. We revisit previous calculations in amodern language and fill in the gaps that we find missing for a complete andready-to-use "NLO xi-scaling" formulary. In particular, as a new result weformulate the mixing of the partonic and hadronic structure function tensorbasis in the operator approach to deep inelastic scattering. As an underlyingframework we follow the operator product expansion a la Georgi & Politzer thatallows the inclusion of target mass corrections at arbitrary order in QCD andwe provide explicit analytical and numerical results at NLO. We compare thisapproach with a simpler collinear parton model approach to xi-scaling. Alongwith target mass corrections we include heavy quark mass effects as acalculable leading twist power suppressed correction. The complete correctionshave been implemented into a Monte Carlo integration program to evaluatestructure functions and/or integrated cross sections. As applications, wecompare the operator approach with the collinear approximation numerically andwe investigate the NLO and mass corrections to observables that are related tothe extraction of the weak mixing angle from a Paschos-Wolfenstein-likerelation in neutrino-iron scattering. We expect that the interpretation ofneutrino scattering events in terms of oscillation physics and electroweakprecision physics will benefit from our results.Comment: 26 pages, 5 figures, note added, to appear in PR

Target mass corrections to electroweak structure functions and perturbative neutrino cross sections