Studying the Sivers function by model calculations

Journal Article · Mon Mar 23 04:00:00 EDT 2009 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3122171· OSTI ID:21293434

Courtoy, A ^[1]; Scopetta, S ^[2]; Vento, V ^[3]

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1. Departament de Fisica Teorica, Universitat de Valencia and Institut de Fisica Corpuscular, Consejo Superior de Investigaciones Cientificas, 46100 Burjassot (Valencia) (Spain)
2. Dipartimento di Fisica, Universita degli Studi di Perugia, via A. Pascoli, 06100 Perugia (Italy)
3. Departament de Fisica Teorica, Universitat de Valencia and Institut de Fisica Corpuscular, Consejo Superior de Investigaciones Cientificas, 46100 Burjassot, Valencia (Spain)

A formalism is presented to evaluate the Sivers function in constituent quark models. A non-relativistic reduction of the scheme is performed and applied to the Isgur-Karl model. The sign for the u and d flavor contributions that we obtained turns out to be opposite. The Burkardt Sum Rule is fulfilled to a large extent. After the estimate of the QCD evolution of the results from the momentum scale of the model to the experimental one, a reasonable agreement with the available data is obtained.

• OSTI ID: 21293434
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1105; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ELECTROMAGNETIC RADIATION
FLAVOR MODEL
POLARIZATION
QUANTUM CHROMODYNAMICS
RELATIVISTIC RANGE
SCATTERING
SUM RULES