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arxiv: hep-ph/0607213 · v1 · submitted 2006-07-19 · ✦ hep-ph

Generalized parton distributions in a meson cloud model

classification ✦ hep-ph
keywords nucleondistributionsgeneralizedpartonclouddifferentmodelapproximation
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We present a model calculation of the generalized parton distributions where the nucleon is described by a quark core surrounded by a mesonic cloud. In the one-meson approximation, we expand the Fock state of the physical nucleon in a series involving a bare nucleon and two-particle, meson-baryon, states. We discuss the role of the different Fock-state components of the nucleon by deriving a convolution formalism for the unpolarized generalized parton distributions, and showing predictions at different kinematics.

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