BFKL predictions at small x from kT and collinear-factorization viewpoints

Hard scattering processes involving hadrons at small x are described by a kt-factorization formula driven by a BFKL gluon. We explore the equivalence of this description to a collinear-factorization approach in which the anomalous dimensions γgg and γqgαs are expressed as power series in αs log(1x), or to be precise αsω where ω is the moment index. In particular we confront the collinear-factorization expansion with that extracted from the BFKL approach with running coupling included.