TY - JOUR AU - Llanes Estrada, Felipe José AU - Brodsky, Stanley J AU - Szczepaniak, Adam P PY - 2009 DO - 10.1103/PhysRevD.79.033012 SN - 1550-7998 UR - https://hdl.handle.net/20.500.14352/43970 T2 - Physical Review D AB - The local coupling of two photons to the fundamental quark currents of a hadron gives an energy-independent contribution to the Compton amplitude proportional to the charge squared of the struck quark, a contribution which has no analog in hadron... LA - eng PB - Americal Physical Society KW - Generalized Parton Distributions KW - Hard Exclusive Processes KW - Large-Momentum-Transfer KW - Form- Actors KW - Quantum Chromodynamics KW - Proton-Antiproton KW - Pair Production KW - Model KW - Qcd KW - Phenomenology TI - Local two-photon couplings and the J=0 fixed pole in real and virtual Compton scattering TY - journal article VL - 79 ER -