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Abstract: A number of deeply virtual exclusive experiments will allow us to access theGeneralized Parton Distributions which are embedded in the complex amplitudesfor such processes. The extraction from experiment is particularly challengingboth because of the large number of kinematical variables and observables to bepinned down in each experimental analysis and because, at variance withinclusive experiments, the variables representing the quark momentum fractionappear integrated over in the physical amplitudes and cannot be accesseddirectly. We present a strategy for the extraction from experiment that makesuse of constraints from both elastic and inclusive scattering as well asinformation from lattice QCD results.



Author: Simonetta Liuti, Saeed Ahmad, Chuanzhe Lin, Huong T. Nguyen

Source: https://arxiv.org/



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