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QCD Sum Rules and Compton Scattering
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abstract
We extend QCD sum rule analysis to moderate energy fixed angle Compton scattering. In this kinematic region there is a strong similarity to the sum rule treatment of electromagnetic form factors, although the four-point amplitude requires a modification of the Borel transform. To illustrate our method, we derive the sum rules for helicity amplitudes in pion Compton scattering and estimate their large-$t$ behavior in the local duality approximation.
Forward citations
Cited by 2 Pith papers
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The Gravitational Form Factor of the Pion in Perturbative QCD with a Dilaton Interaction
Anomaly-induced dilaton-like corrections in the hard kernel significantly modify pion GFFs at large Q^{2} within a factorization approach using Sudakov resummation and a Gaussian TMD wave function.
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Gravitational Form Factors and the QCD Dilaton at Large Momentum Transfer
A proceedings that identifies a one-loop conformal anomaly pole, interpreted as a dilaton, in the non-Abelian TJJ vertex and sketches its insertion into gravitational form factor factorization at large momentum transfer.
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