Nucleon Form Factors from Generalized Parton Distributions

Details Nucleon Form Factors from Generalized Parton Distributions Nucleon Form Factors from Generalized Parton Distributions

2004-10-18

arxiv.org/abs/hep-ph/0410251v2

Phys.Rev.D72:054013,2005

Physics

High Energy Physics

High Energy Physics - Phenomenology

18 pages, 5 figures, replaced with published version

Scientific paper

10.1103/PhysRevD.72.054013

We discuss the links between Generalized Parton Distributions (GPDs) and elastic nucleon form factors. These links, in the form of sum rules, represent powerful constraints on parametrizations of GPDs. A Regge parametrization for GPDs at small momentum transfer, is extended to the large momentum transfer region and it is found to describe the basic features of proton and neutron electromagnetic form factor data. This parametrization is used to estimate the quark contribution to the nucleon spin.

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