Pion Cloud Contribution to Generalized Parton Distribution of the Nucleon

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概要

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• We study the t-dependence of the gluonic generalized parton distribution (GPD) of the nucleon based on a meson cloud picture, where t is the momentum transfer square to the nucleon. We calculate contributions from the virtual meson clouds to the gluon GPD using the standard meson-baryon Lagrangian with the Time Ordered Perturbation Theory. Resulting t-dependence becomes steeper as the total energy increases, because the pions play a relatively important role at smaller-x (larger energy) region. We find the obtained t-dependence is consistent with the analysis of the exclusive J/ψ photoproduction data.

• 2005-01-31

著者

• Suzuki Katsuhiko

  Division Of Liberal Arts Numazu College Of Technology

関連論文

• Spin-dependence of Diffractive Heavy Vector Meson Production
• Pion Cloud Contribution to Generalized Parton Distribution of the Nucleon

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