European Physical Journal C: Particles and Fields (Jul 2017)
Off-shell gluon production in interaction of a projectile with 2 or 3 targets
Abstract
Abstract Within the effective QCD action for the Regge kinematics, the amplitudes for virtual gluon emission are studied in collision of a projectile with two and three targets. It is demonstrated that all non-Feynman singularities cancel between induced vertices and rescattering contributions. Formulas simplify considerably in a special gauge, which is a straightforward generalization of the light-cone gauge for emission of real gluons.