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arxiv: hep-ph/0310048 · v1 · submitted 2003-10-03 · ✦ hep-ph

Impact-Parameter Dependence of the Diagonal GPD of the Pion from Chiral Quark Models

classification ✦ hep-ph
keywords modelquarkagreeschiraldiagonaldistributionimpact-parametermodels
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We analyze the impact-parameter dependent diagonal non-singlet generalized parton distribution of the pion in two distinct chiral quark models: the Spectral Quark Model and the Nambu-Jona-Lasinio model. Leading-order perturbative QCD evolution from the low quark-model scale to higher scales is carried out with the help of the inverse Mellin transform. The model agrees very reasonably with the recent results from transverse-lattice calculations, while the forward parton distribution agrees with the experimental data.

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