What did we learn about GPDs from hard exclusive electroproduction of mesons?

Details What did we learn about GPDs from hard exclusive electroproduction of mesons? What did we learn about GPDs from hard exclusive electroproduction of mesons?

2010-09-13

arxiv.org/abs/1009.2356v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

6 pages, 8 figures, using Latex, talk presented at 12th Intern. Conference on Meson-Nucleon Physics and the Structure of the N

Scientific paper

It is reported on an analysis of electroproduction of light mesons at small Bjorken-x within the handbag approach. The partonic subprocesses, meson electroproduction off quarks or gluons, are calculated within the modified perturbative approach in which quark transverse momenta are retained. The soft hadronic matrix elements, generalized parton distributions, are constructed by means of double distributions. The constraints from parton distributions and sum rules are taken into account. Various moments of these generalized parton distributions are compared to recent results from lattice gauge theories.

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