Chromodynamic corrections to neutrino production of heavy quarks

The O(α_s) perturbative quantum-chromodynamic corrections to weak, charged-current production of heavy quarks are evaluated. For perturbative subtractions and parton densities defined via the electroproduction structure function F^γ*₂, the residual corrections to νN flavor-production structure functions are shown to be modest except for x'-->1 or Q²<<M². We investigate sensitivity of the results to different perturbative subtraction prescriptions. Specializing to charm production, we further find that, for E_ν>30 GeV, color-radiative corrections modify estimated production cross sections by no more than 10%. The results for charm are shown to be generally insensitive to factorization of G-->cc¯ splitting "singularities" into evolution of an intrinsic charm-sea component of the nucleon. The longitudinal structure function due to charm production is computed and found to be substantial.