NLO conformal symmetry in the Regge limit of QCD Original Research Article

Abstract We show that a scale-invariant approximation to the next-to-leading-order BFKL kernel, constructed via transverse momentum diagrams, has a simple conformally invariant representation in impact parameter space, i.e. K∼(p1,p2,p1′,p2′)=g4N2In4|p1−p1′‖p2−p2′||p1−p1′‖p2−p2′| That a conformally invariant representation exists is shown first by relating the kernel directly to That a conformally invariant representation exists is shown first by relating the kernel directly to Feynman diagrams contributing to two-photon diffractive dissociation.