Nucleon quark distributions in a covariant quark-diquark model

Journal Article · Fri Apr 01 00:00:00 EST 2005

OSTI ID:839009

Cloet, Ian; Bentz, W; Thomas, Anthony

Spin-dependent and spin-independent quark light-cone momentum distributions and structure functions are calculated for the nucleon. We utilize a modified Nambu-Jona-Lasinio model in which confinement is simulated by eliminating unphysical thresholds for nucleon decay into quarks. The nucleon bound state is obtained by solving the Faddeev equation in the quark-diquark approximation, where both scalar and axial-vector diquarks channels are included. We find excellent agreement between our model results and empirical data.

• 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: 839009
• Report Number(s): JLAB-THY-05-322; DOE/ER/40150-3283; TRN: US0501583
• Resource Relation: Other Information: No journal information given for this preprint; PBD: 1 Apr 2005
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BOUND STATE
CONFINEMENT
DECAY
FADDEEV EQUATIONS
LIGHT CONE
NUCLEONS
QUARKS
SCALARS
STRUCTURE FUNCTIONS