%0 Journal Article
%T Third-order QCD corrections to the charged-current structure function F_3
%A Moch
%A S.
%A Vermaseren
%A J.
%A Vogt
%A A.
%J High Energy Physics - Phenomenology
%D 2008
%I 
%R 10.1016/j.nuclphysb.2009.01.001
%X We compute the coefficient function for the charge-averaged W^(+/-)-exchange structure function F_3 in deep-inelastic scattering (DIS) to the third order in massless perturbative QCD. Our new three-loop contribution to this quantity forms, at not too small values of the Bjorken variable x, the dominant part of the next-to-next-to-next-to-leading order corrections. It thus facilitates improved determinations of the strong coupling alpha_s and of 1/Q^2 power corrections from scaling violations measured in neutrino-nucleon DIS. The expansion of F_3 in powers of alpha_s is stable at all values of x relevant to measurements at high scales Q^2. At small x the third-order coefficient function is dominated by diagrams with the colour structure d_abc d^abc not present at lower orders. At large x the coefficient function for F_3 is identical to that of F_1 up to terms vanishing for x to 1.
%U http://arxiv.org/abs/0812.4168