2006/01/31 by B. Pasquini, S. Boffi
Physics and Astronomy · #Cloud computing #Computer science #Hadron #High-Energy Particle Collisions Research #Meson #Nuclear physics #Nucleon #Operating system #Particle physics #Particle physics theoretical and experimental studies #Parton #Physics #Quantum Chromodynamics and Particle Interactions #hep-ph
paper · pdf · doi:10.1103/physrevd.73.094001
published as Phys.Rev.D73:094001,2006 · 37 pages, 9 figures, minor corrections, and figure 3 replaced; version to appear in Phys. Rev. D
arxiv created 2006/03/15 · openalex publication_date 2006/05/01 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We present the general formalism required to derive generalized parton distributions within a convolution model where the bare nucleon is dressed by its virtual meson cloud. In the one-meson approximation the Fock states of the physical nucleon are expanded in a series involving a bare nucleon and two-particle, meson-baryon, states. The baryon is assumed here to be either a nucleon or a \ensuremathΔ described within the constituent-quark model in terms of three-valence quarks; correspondingly, the meson, assumed to be a pion, is described as a quark-antiquark pair. Explicit expressions for the unpolarized generalized parton distributions are obtained and evaluated in different kinematics.