Generalized Parton Distributions and Constituent Quark Models

Journal Article · Thu Feb 10 04:00:00 EST 2005 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.1871660· OSTI ID:20630617

Traini, M ^[1]; Pasquini, B; Boffi, S ^[2]

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1. Dipartimento di Fisica, Universita degli Studi di Trento, Povo, Trento (Italy)
2. Dipartimento di Fisica Nucleare e Teorica, Universita degli Studi di Pavia, Pavia (Italy)

Generalized parton distributions (GPDs) are studied at the hadronic (nonperturbative) scale within different assumptions based on a relativistic constituent quark model. In particular, by means of a meson-cloud model we investigate the role of nonperturbative antiquark degrees of freedom and the valence quark contribution. A QCD evolution of the obtained GPDs is used to add perturbative effects and to investigate the GPDs' sensitivity to the nonperturbative ingredients of the calculation at larger (experimental) scale.

• OSTI ID: 20630617
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 747; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
DEGREES OF FREEDOM
DISTRIBUTION
EVOLUTION
MESONS
PARTICLE KINEMATICS
PARTONS
QUANTUM CHROMODYNAMICS
QUARK MODEL
QUARKS
RELATIVISTIC RANGE
SENSITIVITY