Probing Quark Distribution Amplitudes Through Generalized Parton Distributions at Large Momentum Transfer

Abstract

In the large momentum transfer limit, generalized parton distributions can be calculated through a QCD factorization theorem which involves perturbatively-calculable hard kernels and light-cone parton distribution amplitudes of hadrons. We illustrate this through the $H_q(x,\xi ,t)$ distribution for the pion and proton, presenting the hard kernels at leading order. As a result, experimental data on the generalized parton distributions in this regime can be used to determine the functional form of the parton distribution amplitudes which has thus far been quite challenging to obtain. Our result can also be used as a constraint in phenomenological GPD parametrizations.

7 pages, 4 figures; new references and figure added, errors corrected

References in corpus (5)

• Viewing the Proton Through "Color"-Filters
• Perturbative QCD Analysis of the Nucleon's Pauli Form Factor F_2(Q^2)
• Double deeply virtual Compton scattering off the nucleon
• Next-to-next-to-leading order prediction for the photon-to-pion transition form factor
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• Gluon Gravitational Form Factors at Large Momentum Transfer
• Perturbative Calculations of Gravitational Form Factors at Large Momentum Transfer
• Near Threshold Heavy Quarkonium Photoproduction at Large Momentum Transfer
• Deeply virtual Compton scattering on a virtual pion target
• Towards a Pion Generalized Parton Distribution Model from Dyson-Schwinger Equations
• TMD Relations: Insights from a Light-Front Quark-Diquark Model
• Two-Photon Effects in Lepton-AntiLepton Pair Photoproduction from a Nucleon Target using Real Photons
• Constraining axion-gluon coupling in monohadron processes
• Pion GPDs: A path toward phenomenology