2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/185268We compute the O(1/N_f) correction to the predominantly gluonic flavour singlet twist-2 anomalous dimension used in polarized deep inelastic scattering. It is consistent with known two loop perturbation theory and we determine the three loop contribution at O(1/N_f). The treatment of the epsilon-tensor in the large N_f d-dimensional critical point formalism is also discussed.8 Latex pages, 1 postscript figureHigh Energy Physics - Phenomenologytext