Description
In the high energy limit, the scattering amplitudes of non abelian gauge theory feature large logarithmic corrections to all the perturbative orders. The exchange of one reggeized gluon plays a crucial role to resum such logarithms. However, the amplitudes have a much richer structure. In particular, at the level of the next-to-next-to leading logarithms the amplitudes include the contributions of both the reggeized gluon and of a Regge cut. I will review an approach to disentangle the two different contributions, based on the rapidity evolution of Wilson line correlators. I will discuss the application of this method to three different scattering processes.