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

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

2000-09-08

arxiv.org/abs/hep-ph/0009102v3

Phys.Rev. D63 (2001) 056014; Erratum-ibid. D65 (2002) 079902

Physics

High Energy Physics

High Energy Physics - Phenomenology

26 pages LaTeX, 3 figures, typos fixed

Scientific paper

10.1103/PhysRevD.63.056014

As a first step towards the computation of the NLO corrections to the photon impact factor in the $\gamma^*\gamma^* \to \gamma^* \gamma^*$ scattering process, we calculate the one loop corrections to the coupling of the reggeized gluon to the $\gamma^*\to q\bar{q}$ 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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