Large N[sub c], constituent quarks, and N, [Delta] charge radii

Miscellaneous · Wed Mar 01 00:00:00 EST 2000

OSTI ID:5793897

Buchmann, Alfons J; Lebed, Richard F

The authors show how one may define baryon constituent quarks in a rigorous manner, given physical assumptions that hold in the large-N[sub c] limit of QCD. This constituent picture gives rise to an operator expansion that has been used to study large-N[sub c] baryon observables; here they apply it to the case of charge radii of the N and [Delta] states. For example, one finds the relation r[sub p][sup 2] [minus] r[sub [Delta][sup +]][sup 2] = r[sub n][sup 2] [minus] r[sub [Delta][sup 0]][sup 2] to be broken only by three-body, O(1/N[sub c][sup 2]) effects for any N[sub c].

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (United States)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 5793897
• Report Number(s): DOE/ER/40150-1414; JLAB-THY-00-07; hep-ph/0003167
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
N BARYONS
DELTA BARYONS
PARTICLE RADII
QUANTUM CHROMODYNAMICS
QUARKS
THREE-BODY PROBLEM
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
FERMIONS
MANY-BODY PROBLEM
BARYONS
FIELD THEORIES
HADRONS
662410* - Properties of Baryons & Baryon Resonances- (1992-)