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The (gamma^*-q\bar q)-Reggeon Vertex in Next-to-Leading Order QCD

J. Bartels·S. Gieseke·C. -F. Qiao
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Abstract

As a first step towards the computation of the NLO corrections to the photon impact factor in the $γ^*γ^* \to γ^* γ^*$ scattering process, we calculate the one loop corrections to the coupling of the reggeized gluon to the $γ^*\to q\bar{q}$ vertex. We list the results for the Feynman diagrams which contribute: all loop integrations are carried out, and the results are presented in the helicity basis of photon, quark, and antiquark.

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J. Bartels, S. Gieseke, C. -F. Qiao. 2001-12-23. The (gamma^*-q\bar q)-Reggeon Vertex in Next-to-Leading Order QCD. https://doi.org/10.1103/physrevd.63.056014%2010.1103%2Fphysrevd.65.079902

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