NON-ABELIAN Q(Q)OVER-BAR CONTRIBUTIONS TO SMALL-X ANOMALOUS DIMENSIONS

By using k-factorization, we derive resummation formulas for the non-a belian <q(q)over bar> contributions to both heavy flavour production b y gluon fusion, and to the next-to-leading BFKL kernel. By combining t his result with previous ones by Fadin et al. on the virtual terms, we also compute in closed form the complete <q(q)over bar> contribution to the gluon anomalous dimension in the Q(0)-scheme. We find that <q(q )over bar> resummation effects are important for heavy flavour product ion, but are instead small in the anomalous dimension eigenvalues, bec ause of a cancellation between abelian and non-abelian contributions.