Small-x resummation effects in electroweak processes Original Research Article

We investigate small-x resummation effects in QCD coefficient functions for Z0g and Wg fusion processes, and we compare them with the known ones of yg type. We find a strong process dependence that we argue to be due to the possible presence of collinear singularities for either small or large k of the exchanged gluon. For top quark production, we find that the gg → tt and Z0g → tt channels have larger resummation enhancements than the Wg → tb one.