Effect of 1/Q2 and α/sub s/ corrections on tests of QCD

We discuss in detail the use of the structure function F3(x,Q2) of deep-inelastic neutrino scattering for testing quantum chromodynamics. QCD is entirely consistent with all data. However, we show that higher-twist (order 1/Q2) contributions, which are commonly neglected, can have a dramatic impact on interpretation of this result. At present the data are not accurate enough to determine the magnitudes of these 1/Q2 contributions within the context of QCD. Furthermore, the possible presence of higher-twist terms makes it impossible to unambiguously detect the logarithmic Q2 dependence and anomalous dimensions which distinguish QCD from hypothetical alternative theories. As a result, more precise data with higher Q2 are needed to provide definitive tests of QCD. The corrections of second-order in α/sub s/ introduce fewer complications for testing QCD, and provide a useful context for understanding critical ambiguities in the definitions of α/sub s/ and Λ