Scaling Violations and Perturbative Quantum Chromodynamics

We try to understand the meaning of the recent data on scaling violations of the moments of the structure function F3 measured in ν and ν deep inelastic scattering, and their relevance as a test of QCD. We do this by reducing to the minimum the theoretical machinery and prejudices and stressing the perturbative nature of the problem. We are led to a definition of the perturbation coupling constant σS(Q = 2.5 GeV) = 0.61 ± 0.06, in termas of which the corrective terms for all quantities computed so far turn out to be relatively small.