Regular Article - Theoretical Physics
Off-shell gluon production in interaction of a projectile with 2 or 3 targets
Department of High Energy physics, Saint-Petersburg State University, 198504, Saint Petersburg, Russia
Accepted: 7 July 2017
Published online: 27 July 2017
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.
© The Author(s), 2017