Constituent quark model study of light- and strange-baryon spectra

Journal Article · Mon Aug 01 04:00:00 EDT 2005 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PhysRevC.72.025206· OSTI ID:20698930

Valcarce, A; Vijande, J ^[1]; Garcilazo, H ^[2]

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1. Grupo de Fisica Nuclear, and IUFFyM, Universidad de Salamanca, E-37008 Salamanca (Spain)
2. Escuela Superior de Fisica y Matematicas, Instituto Politecnico Nacional, Edificio 9, 07738 Mexico D.F. (Mexico)

We investigate the structure of the SU(3) octet and decuplet baryons employing a constituent quark model designed for the study of the baryon-baryon interaction and successfully applied to the meson spectra. The model considers through the interacting potential perturbative, one-gluon exchange, and nonperturbative, boson exchanges and confinement, aspects of the underlying theory, quantum chromodynamics (QCD). We solve the three-quark problem by means of the Faddeev method in momentum space. We analyze the effect of the different terms in the interaction and make contact with the use of relativistic kinematics. We find an explanation to the strong contribution of the pseudoscalar forces in the semirelativistic approach for the octet baryons. A phenomenological recipe for the regularization parameter of the one-gluon exchange is found.

• OSTI ID: 20698930
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 72; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BARYON-BARYON INTERACTIONS
BOSON-EXCHANGE MODELS
GLUONS
HYPERONS
MESON SPECTROSCOPY
PERTURBATION THEORY
POTENTIALS
QUANTUM CHROMODYNAMICS
QUARKS
RELATIVISTIC RANGE
SU-3 GROUPS