The Use of Dispersion Relations in Hard Exclusive Processes and the Partonic Interpretation of Deeply Virtual Compton Scattering

Abstract

Recently dispersion relations have been applied to hard exclusive processes such as deeply virtual Compton scattering, and a holographic principle was proposed that maps out the generalized parton distributions entering the soft matrix elements for the processes from their values on a given kinematical ridge. We examine possible pitfalls associated with the implicit, direct identification in this approach of the physical hadronic states with colored partons, and suggest an improved treatment of this assumption.

4 pages, 3 figures

References in corpus (4)

• Fully Unintegrated Parton Correlation Functions and Factorization in Lowest Order Hard Scattering
• Dispersion representations for hard exclusive processes
• Dispersion relations and subtractions in hard exclusive processes
• Duality between different mechanisms of QCD factorization in γ^*γcollisions

Cited by in corpus (5)

• Dispersive evaluation of the D-term form factor in deeply virtual Compton scattering
• Precision Studies of QCD in the Low Energy Domain of the EIC
• DVCS and the skewness effect at small x
• Strategies to Extract Generalized Parton Distributions from Data
• Investigating Partons' Transverse Spin with Deep Inelastic Exclusive Experiments