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

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

2008-07-15

arxiv.org/abs/0807.2355v3

Eur.Phys.J.A37:319-332,2008

Physics

High Energy Physics

High Energy Physics - Phenomenology

15 pages, 8 figures

Scientific paper

10.1140/epja/i2008-10630-6

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.

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