Virtual meson cloud of the nucleon and generalized parton distributions

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dc.creatorPasquini, B.
dc.creatorBoffi, S.
dc.date2006-01-20
dc.date2006-03-15
dc.date.accessioned2026-07-07T10:44:39Z
dc.date.available2026-07-07T10:44:39Z
dc.descriptionWe 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 $Δ$ 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.
dc.description37 pages, 9 figures, minor corrections, and figure 3 replaced; version to appear in Phys. Rev. D
dc.identifierhttps://arxiv.org/abs/hep-ph/0601177
dc.identifierhttp://arxiv.org/abs/hep-ph/0601177
dc.identifierPhys.Rev.D73:094001,2006
dc.identifierdoi:10.1103/PhysRevD.73.094001
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/182672
dc.subjectHigh Energy Physics - Phenomenology
dc.titleVirtual meson cloud of the nucleon and generalized parton distributions
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