One-loop corrections to multiscale effective vertices in the EFT for Multi-Regge processes in QCD

Abstract

The computation of one-loop corrections to the ${\gamma }^{\star }{Q}_{+}q$ and $g{R}_{+}g$ effective vertices in the framework of gauge-invariant effective theory for Multi-Regge processes in QCD is reviewed. Due to consistent implementation of the "tilted Wilson line" regularization for rapidity divergences, the gauge-invariance has been preserved at all stages of calculation independently on the rapidity regulator and cancellation of the power-like dependence on the regularization variable is traced. Only single-logarithmic rapidity divergence is left in the final result.

Comments: Talk at DIS-2019, misprint in Eq. (3.4) corrected