Consistent quark model with hyperfine interactions for the ground and low-lying excited baryon states

Journal Article · Fri Jan 01 00:00:00 EST 1982 · Phys. Rev. D; (United States)

DOI:https://doi.org/10.1103/PhysRevD.25.217· OSTI ID:5847769

Kalman, C S; Hall, R L

Isgur and Karl have recently analyzed the ground and low-lying excited baryon states; the negative-parity and positive-parity baryons are treated separately using different parameter sets. In this paper we show how the Hamiltonian introduced by Isgur and Karl to examine the positive-parity baryons can be modified to apply to the negative-parity baryons. In particular, the mass difference between ..lambda..5/2/sup -/ and ..sigma..5/2/sup -/ is restored to a value consistent with experiment.

• Research Organization: Elementary Particle, Physics Group, Concordia University, 1455 de Maisonneuve Boulevard West, Montreal, P. Q. H3Q 1M8, Canada
• OSTI ID: 5847769
• Journal Information: Phys. Rev. D; (United States), Vol. 25:1
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
ENERGY LEVELS
QUARK MODEL
HAMILTONIANS
HARMONIC OSCILLATOR MODELS
MASS DIFFERENCE
PARITY
QUANTUM CHROMODYNAMICS
SPIN
SU-3 GROUPS
ANGULAR MOMENTUM
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
LIE GROUPS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
QUANTUM OPERATORS
SU GROUPS
SYMMETRY GROUPS
645206* - High Energy Physics- Particle Interactions & Properties-Theoretical- Strong Interactions
Baryon No. = 1- (-1987)