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One-loop Reggeon-Reggeon-gluon vertex at arbitrary space-time dimension

V. S. Fadin·R. Fiore·A. Papa
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Abstract

In order to check the compatibility of the gluon Reggeization in QCD with the $s$-channel unitarity, the one-loop correction to the Reggeon-Reggeon-gluon vertex must be known at arbitrary space-time dimension $D$. We obtain this correction from the gluon production amplitude in the multi-Regge kinematics and present an explicit expression for it in terms of a few integrals over the transverse momenta of virtual particles. The one-gluon contribution to the non-forward BFKL kernel at arbitrary $D$ is also obtained.

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V. S. Fadin, R. Fiore, A. Papa. 2000-08-01. One-loop Reggeon-Reggeon-gluon vertex at arbitrary space-time dimension. https://doi.org/10.1103/physrevd.63.034001

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