Generalized Parton Distributions and Color Transparency

Details Generalized Parton Distributions and Color Transparency Generalized Parton Distributions and Color Transparency

2004-05-03

arxiv.org/abs/hep-ph/0405014v2

Phys.Rev. D70 (2004) 074019

Physics

High Energy Physics

High Energy Physics - Phenomenology

30 pages, 13 figures

Scientific paper

10.1103/PhysRevD.70.074019

We study the structure of generalized parton distributions in impact parameter space with the aim of determining the size and role of small transverse separations components in the quarks wave function. We analyze the relation between transverse momentum components and transverse separations. Wave functions with large transverse momentum components can simultaneously reproduce the behavior of the Dirac form factor at large momentum transfer, and of the deep inelastic structure functions at Bjorken x -> 1. The presence of large momentum components does not ensure, however, the dominance of small transverse distances at large x. We suggest that experiments measuring the attenuation of hadrons in the nuclear medium, or the onset of color transparency, can provide an alternative source of information on generalized parton distributions, by mapping out the behavior of the transverse components of the wave function.

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