Tomography for amplitudes of hard exclusive processes

Abstract

We discuss which part of information about hadron structure encoded in the Generalized Parton Distributions (GPDs) [part of total GPD image] can be restored from the known amplitude of a hard exclusive process. The physics content of this partial image is analyzed. Among other things, we show that this partial image contains direct information about how the target hadron responses to the (string) quark-antiquark operator of {\it arbitrary} spin J. Explicit equations relating physics content of the partial image of GPDs directly to the data are derived. Also some new results concerning the dual parametrization of GPDs are presented.

13 pages, no figures, misprints are corrected

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• Towards a fitting procedure for deeply virtual Compton scattering at next-to-leading order and beyond
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• Forces inside the nucleon on the light front from 3D Breit frame force distributions: Abel tomography case
• Generalized Parton Distributions and Their Singularities
• Local Two-Photon Couplings and the J=0 Fixed Pole in Real and Virtual Compton Scattering
• An experimental program with high duty-cycle polarized and unpolarized positron beams at Jefferson Lab
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• Some numerical studies of the evolution of generalized parton distributions
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• On the mistake in the implementation of the minimal model of the dual parameterization and resulting inability to describe the high-energy DVCS data
• Beam charge asymmetries for deeply virtual Compton scattering off the proton
• Mechanical structure of a spin-1 particle
• Modeling Nucleon Generalized Parton Distributions
• Dual parameterization and Abel transform tomography for twist-3 DVCS
• Transverse charge distributions of the nucleon and their Abel images
• Electromagnetic multipole structure of a spin-one particle: Abel tomography case
• Diphoton Generalized Distribution Amplitudes
• Accessing GPDs from experiment --- potential of a high-luminosity EIC ---
• The dual parametrization for gluon GPDs
• Large-N Summation of Chiral Logs for Generalized Parton Distributions
• Educing GPDs from amplitudes of hard exclusive processes
• Medium modification of the nucleon mechanical properties: Abel tomography case
• Sum Rules for Nucleon GPDs and Border Function Formulation
• Systematic description of hadron's response to non-local QCD probes: Froissart-Gribov projections in analysis of deeply virtual Compton scattering
• Dispersion relations and QCD factorization in hard reactions
• Energy-momentum tensor of the nucleon on the light front: Abel tomography case
• Skewness Dependence of GPD / DVCS, Conformal OPE and AdS/CFT Correspondence II: a holographic model of GPD
• Some news about generalised parton distributions