Strategies to Extract Generalized Parton Distributions from Data

Details Strategies to Extract Generalized Parton Distributions from Data Strategies to Extract Generalized Parton Distributions from Data

2009-08-15

arxiv.org/abs/0908.2199v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

5 pages, 1 figure, to appear in proceedings od DIS 2009, 26-30 April 2009, Madrid

Scientific paper

A number of deeply virtual exclusive experiments will allow us to access the Generalized Parton Distributions which are embedded in the complex amplitudes for such processes. The extraction from experiment is particularly challenging both because of the large number of kinematical variables and observables to be pinned down in each experimental analysis and because, at variance with inclusive experiments, the variables representing the quark momentum fraction appear integrated over in the physical amplitudes and cannot be accessed directly. We present a strategy for the extraction from experiment that makes use of constraints from both elastic and inclusive scattering as well as information from lattice QCD results.

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