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.

Generalized parton distributions in a meson cloud model

PASQUINI, BARBARA;BOFFI, SIGFRIDO
2007-01-01

Abstract

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.
2007
Nuclear Physics A
The Physics category includes resources of a broad, general nature that contain materials from all areas of physics, The category also includes resources specifically concerned with the following physics sub-fields: mathematical physics, particle and nuclear physics, physics of fluids and plasmas, quantum physics, and theoretical physics.
Comitato scientifico
Inglese
su invito
5th International Conference on Perspectives in Hadron Physics, Particle–Nucleus and Nucleus–Nucleus Scattering at Relativistic Energies
22-26 Maggio 2006
ICTP, Trieste
Internazionale
STAMPA
782
86c
92c
7
Tematica Ex SIR: Fisica teorica dei nuclei e degli adroni (Classif. Ex SIR:Articoli su riviste ISI )
generalizaed parton distribution; light-cone wavefunctions; meson cloud model of the nucleon
http://www.springerlink.com/content/n51107715677hng0/
none
Pasquini, Barbara; Boffi, Sigfrido
273
info:eu-repo/semantics/conferenceObject
2
4 Contributo in Atti di Convegno (Proceeding)::4.1 Contributo in Atti di convegno
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11571/137427
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