Eur. Phys. J. C (2010) 65: 385-394
https://doi.org/10.1140/epjc/s10052-009-1184-y

Regular Article - Theoretical Physics

Production of two gluons in the Lipatov effective action formalism

Saint-Petersburg State University, 198504, S.Petersburg, Russia

^* e-mail: ovsky@mv8660.spb.edu
^** e-mail: ovsky@pobox.spbu.ru

Received: 18 June 2009
Revised: 12 September 2009
Published online: 24 November 2009

Abstract

The one-loop diffractive amplitude for emission of two real gluons with widely different rapidities is studied in the Lipatov effective action formalism. It is shown that after integration over longitudinal momenta in the loop the resulting expression coincides with the one obtained by the Lipatov–Bartels formalism in transversal space provided the same prescription is used to exclude divergent contributions as previously proposed for emission of a single real gluon.