Testing for three-body quark forces in L = 1 excited baryons

Journal Article · Fri Nov 12 00:00:00 EST 2010 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3523161· OSTI ID:21506746

Pirjol, Dan ^[1]; Schat, Carlos ^[2]

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1. National Institute for Physics and Nuclear Engineering, Department of Particle Physics, 077125 Bucharest (Romania)
2. Department of Physics and Astronomy, Ohio University, Athens, Ohio 45701 (United States) and Departamento de Fisica, FCEyN, Universidad de Buenos Aires, Ciudad Universitaria, Pab.1, (1428) Buenos Aires (Argentina)

We discuss the matching of the quark model to the effective mass operator of the 1/N{sub c} expansion using the permutation group S{sub N}. As an illustration of the general procedure we perform the matching of the Isgur-Karl model for the spectrum of the negative parity L = 1 excited baryons. Assuming the most general two-body quark Hamiltonian, we derive two correlations among the masses and mixing angles of these states which should hold in any quark model. These correlations constrain the mixing angles and can be used to test for the presence of three-body quark forces.

• OSTI ID: 21506746
• Journal Information: AIP Conference Proceedings, Vol. 1296, Issue 1; Conference: 11. hadron physics international workshop, Maresias, Sao Paulo (Brazil), 21-26 Mar 2010; Other Information: DOI: 10.1063/1.3523161; (c) 2010 American Institute of Physics; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
CORRELATIONS
EFFECTIVE MASS
EXPANSION
HAMILTONIANS
HARMONIC OSCILLATORS
PARITY
QUANTUM CHROMODYNAMICS
QUARK MODEL
QUARKS
SIMULATION
SPECTRA
THREE-BODY PROBLEM
TWO-BODY PROBLEM
WEINBERG ANGLE
COMPOSITE MODELS
ELEMENTARY PARTICLES
FERMIONS
FIELD THEORIES
HADRONS
MANY-BODY PROBLEM
MASS
MATHEMATICAL MODELS
MATHEMATICAL OPERATORS
PARTICLE MODELS
PARTICLE PROPERTIES
QUANTUM FIELD THEORY
QUANTUM OPERATORS