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Generalized Parton Distributions for the Proton in Position Space : Non-Zero Skewness (1012.2627v1)
Published 13 Dec 2010 in hep-ph
Abstract: We investigate the generalized parton distributions (GPDs) for u and d quarks in a proton in transverse and longitudinal position space using a recent phenomenological parametrization. We take nonzero skewness \zeta and consider the region x> \zeta. Impact parameter space representation of the GPD E is found to depend sharply on the parameters used within the model, in particular in the low x region. In longitudinal position space a diffraction pattern is observed, as seen before in several other model