Cloudy bag model of the nucleon

Journal Article · Wed Jul 01 00:00:00 EDT 1981 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.24.216· OSTI ID:6440535

Thomas, A W; Theberge, S; Miller, G A

A previously derived model in which a baryon is treated as a three-quark bag that is surrounded by a cloud of pions is used to compute the static properties of the nucleon. The only free parameter of the model is the bag radius which is fixed by a fit to pion-nucleon scattering in the (3,3)-resonance region to be about 0.8 fm. With the model so determined the computed values of the root-mean-square radii and magnetic moments of the neutron and proton, and g/sub A/, are all in very good agreement with the experimental values. In addition, about one-third of the ..delta..-nucleon mass splitting is found to come from pionic effects, so that our extracted value of ..cap alpha../sub s/ is smaller than that of the MIT bag model.

• Research Organization: TRIUMF, University of British Columbia, Vancouver, British Columbia, Canada V6T2A3
• OSTI ID: 6440535
• Journal Information: Phys. Rev. D; (United States), Journal Name: Phys. Rev. D; (United States) Vol. 24:1; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

645206* -- High Energy Physics-- Particle Interactions & Properties-Theoretical-- Strong Interactions
Baryon No. = 1-- (-1987)
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
AMPLITUDES
BAG MODEL
BARYONS
COMPOSITE MODELS
COUPLING CONSTANTS
CROSS SECTIONS
ELEMENTARY PARTICLES
EXTENDED PARTICLE MODEL
FERMIONS
FIELD THEORIES
HADRON-HADRON INTERACTIONS
HADRONS
INTERACTIONS
MAGNETIC MOMENTS
MASS
MATHEMATICAL MODELS
MESON-BARYON INTERACTIONS
MESON-NUCLEON INTERACTIONS
NUCLEONS
PARTICLE INTERACTIONS
PARTICLE MODELS
PARTICLE PROPERTIES
PARTICLE RADII
PION-NUCLEON INTERACTIONS
QUANTUM CHROMODYNAMICS
QUANTUM FIELD THEORY
QUARK MODEL
RENORMALIZATION
SCATTERING AMPLITUDES