Spin-dependent parton distributions in the nucleon

Conference · Fri Apr 01 00:00:00 EST 2005

OSTI ID:838561

Cloet, I C; Bentz, W; Thomas, A W

Spin-dependent quark light-cone momentum distributions are calculated for a nucleon in the nuclear medium. We utilize a modified NJL model where the nucleon is described as a composite quark-diquark state. Scalar and vector mean fields are incorporated in the nuclear medium and these fields couple to the confined quarks in the nucleon. The effect of these fields on the spin-dependent distributions and consequently the axial charges is investigated. Our results for the ''spin-dependent EMC effect'' are also discussed.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 838561
• Report Number(s): JLAB-THY-05-7; DOE/ER/40150-3262; TRN: US0501470
• Resource Relation: Conference: Workshop On QCD Down Under, Barossa Valley and Adelaide (AU), 03/10/2004--03/19/2004; Other Information: PBD: 1 Apr 2005
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
LIGHT CONE
NUCLEONS
PARTONS
QUANTUM CHROMODYNAMICS
QUARKS
SCALARS
VECTORS