https://doi.org/10.1140/epjc/s10052-017-5053-9
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
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Received:
13
March
2017
Accepted:
7
July
2017
Published online:
27
July
2017
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.
© The Author(s), 2017
