QCD Sum Rules and Compton Scattering

Details QCD Sum Rules and Compton Scattering QCD Sum Rules and Compton Scattering

1993-01-26

arxiv.org/abs/hep-ph/9301274v1

Nucl.Phys. B405 (1993) 481-506

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages in Latex, 6 figures not included, available upon request (send email to: claudio@max.physics.sunysb.edu), ITP-SB-92-7

Scientific paper

10.1016/0550-3213(93)90556-5

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.

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