Holographic Open/Closed Exchange in Double Deeply Virtual Compton Scattering: Fixed-- Structural Matching to the -Basis Wilson Coefficients
This paper demonstrates that in the collinear regime, holographic double deeply virtual Compton scattering (DDVCS) amplitudes derived from Witten diagrams structurally match the -basis Wilson coefficients of perturbative QCD at a fixed scale, with the open and closed string channels corresponding to the and eigenchannels respectively, governed by a universal hypergeometric hard kernel and distinct branch-point structures.