Generalized parton distributions from nucleon form factors

Details Generalized parton distributions from nucleon form factors Generalized parton distributions from nucleon form factors

2005-12-19

arxiv.org/abs/hep-ph/0512229v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

11 pages, 10 figures, talk presented at the XI workshop on High Energy Spin Physics (SPIN2005), JINR Dubna, September 2005

Scientific paper

Results from a recent analysis of the zero-skewness generalized parton distributions (GPDs) for valence quarks are reviewed. The analysis bases on a physically motivated parameterization of the GPDs with a few free parameters adjusted to the nucleon form factor data. The Fourier transforms of the GPDs representing quark densities in the impact parameter plane, as well as moments of the GPDs are also discussed. The 1/x moments in particular form the soft physics input to Compton scattering off protons within the handbag approach. The Compton cross section evaluated from this information is found to be in good agreement with experiment.

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