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

Abstract

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

26 pages LaTeX, 3 figures, typos fixed

References in corpus (2)

• Effect of the Charm Quark Mass on the BFKL gamma^* gamma^* Total Cross Section at LEP
• The Photon Wave Function in Non-forward Diffractive Scattering with Non-vanishing Quark Masses

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