QCD corrections to e+e− → μ−νμ u d at LEP2 and the next linear collider: CC10 at O(αs)

QCD one-loop corrections to the semileptonic process e+e− → μ−νμ u d are computed. We compare the exact calculation with a “naive” approach to strong radiative corrections which has been widely used in the literature and discuss the phenomenological relevance of QCD contributions for LEP2 and NLC physics.