Generalized Parton Distributions and the Spin Structure of the Nucleon

Details Generalized Parton Distributions and the Spin Structure of the Nucleon Generalized Parton Distributions and the Spin Structure of the Nucleon

2002-11-09

arxiv.org/abs/hep-lat/0211016v1

Physics

High Energy Physics

High Energy Physics - Lattice

9 pages, plenary talk given at Lattice 2002, Cambridge, MA, USA

Scientific paper

10.1016/S0920-5632(03)01491-9

Generalized parton distributions are a new type of hadronic observables which has recently stimulated great interest among theorists and experimentalists alike. Introduced to delineate the spin structure of the nucleon, the orbital angular momentum of quarks in particular, the new distributions contain vast information about the internal structure of the nucleon, with the usual electromagnetic form factors and Feynman parton distributions as their special limits. While new perturbative QCD processes, such as deeply virtual Compton scattering and exclusive meson production, have been found to measure the distributions directly in experiments, lattice QCD offers a great promise to provide the first-principle calculations of these interesting observables.

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