K-FACTORIZATION AND SMALL-X ANOMALOUS DIMENSIONS

We investigate the consistency requirements of the next-to-leading BFK L equation with the renormalization group, with particular emphasis on running coupling effects and NL anomalous dimensions. We show that, d espite some model dependence of the bare hard pomeron, such consistenc y holds at leading twist level, provided the effective variable alpha( s)(t)log(1/x) is not too large. We give a unified view of resummation formulas for coefficient functions and anomalous dimensions in the eo scheme and we discuss in detail the new one for the <q(q)over bar> con tributions to the gluon channel. (C) 1997 Elsevier Science B.V.