A fitter code for Deep Virtual Compton Scattering and Generalized Parton Distributions

Abstract

We have developped a fitting code based on the leading-twist handbag Deep Virtual Compton Scattering (DVCS) amplitude in order to extract the Generalized Parton Distributions (GPD) information from DVCS observables in the valence region. In a first stage, with simulations and pseudo-data, we show that the full GPD information can be recovered from experimental data if enough observables are measured. If only part of these observables are measured, valuable information can still be extracted, certain observables being particularly sensitive to certain GPDs. In a second stage, we make a practical application of this code to the recent DVCS Jefferson Lab Hall A data from which we can extract numerical constraints for the two $H$ GPD Compton Form Factors.

15 pages, 8 figures

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Cited by in corpus (39)

• Generalized Parton Distributions in the valence region from Deeply Virtual Compton Scattering
• GPD phenomenology and DVCS fitting - Entering the high-precision era
• Deeply virtual Compton scattering at small x_B and the access to the GPD H
• Final Analysis of Proton Form Factor Ratio Data at ${\mathbf{Q}}^2=4.0$, 4.8 and 5.6 GeV${}^2$
• Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions
• NLO corrections to timelike, spacelike and double deeply virtual Compton scattering
• On timelike and spacelike deeply virtual Compton scattering at next to leading order
• Single and double spin asymmetries for deeply virtual Compton scattering measured with CLAS and a longitudinally polarized proton target
• Exclusive ${\rho }^0$ electroproduction on the proton at CLAS
• Description and interpretation of DVCS measurements
• From Bethe-Salpeter Wave Functions to Generalised Parton Distributions
• Neural network generated parametrizations of deeply virtual Compton form factors
• Generalized Parton Distributions from Deep Virtual Compton Scattering at CLAS
• Separation of contributions from deeply virtual Compton scattering and its interference with the Bethe--Heitler process in measurements on a hydrogen target
• Generalized Parton Distributions from Deeply Virtual Compton Scattering at HERMES
• Test of two new parameterizations of the Generalized Parton Distribution $H$
• Constraints on the $\tilde{H}$ Generalized Parton Distribution from Deep Virtual Compton Scattering Measured at HERMES
• Deeply Virtual Compton Scattering at a Proposed High-Luminosity Electron-Ion Collider
• Generalized Parton Distributions: visions, basics, and realities
• Tomographic image of the proton
• HERMES impact for the access of Compton form factors
• Extraction of the Compton Form Factor H from DVCS measurements at Jefferson Lab
• Dual parametrization of GPDs versus the double distribution Ansatz
• Analysis of Deeply Virtual Compton Scattering Data at Jefferson Lab and Proton Tomography
• An introductory lecture on Generalised Parton Distributions
• Exclusive neutrino-production of a charmed meson
• Resumming soft and collinear contributions in deeply virtual Compton scattering
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• On Extraction of Twist-Two Compton Form Factors from DVCS Observables Through Harmonic Analysis
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• Generalized Parton Distributions and Deeply Virtual Compton Scattering
• Deeply Virtual Exclusive Processes and Generalized Parton Distributions
• Deeply virtual Compton scattering on the neutron with positron beam
• Parametrizing Compton form factors with neural networks
• On Deeply Virtual Compton Scattering at next-to-leading order
• Unified and optimal frame choice for generalized parton distributions
• Measuring the skewness dependency of Generalized Parton Distributions
• New framework for extracting GPDs from exclusive photon electroproduction