Off-shell gluon production in interaction of a projectile with 2 or 3 targets

Abstract

Within the effective QCD action for the Regge kinematics amplitudes for virtual gluon emission are studied in collision of a projectile with two and three targets. It is demonstrated that all un- 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.

13 pages, 6 figures; submitted to Eur.Phys.Jour.C

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