Virtual Next-to-Leading Corrections to the Lipatov Vertex

Abstract

We compute the virtual next-to-leading corrections to the Lipatov vertex in the helicity-amplitude formalism. These agree with previous results by Fadin and collaborators, in the conventional dimensional-regularization scheme. We discuss the choice of reggeization scale in order to minimize its impact on the next-to-leading-logarithmic corrections to the BFKL equation.

Latex, 20 pages, no figures; One minor typo fixed. References added. To be published in Phys. Rev. D

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• The Quark-Antiquark Contribution to the Fully Exclusive BFKL Evolution at NLL Accuracy
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• One-loop impact factor for the emission of two gluons
• The two-loop Higgs impact factor
• Scattering Amplitudes in High Energy QCD
• A tale of two Regge limits
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• Discontinuites of BFKL amplitudes and the BDS ansatz
• One-loop central-emission vertex for two gluons in $\mathcal{N}=4$ super Yang-Mills theory