SU(6) [70,1{sup -}] baryon multiplet in the 1/N{sub c} expansion

Journal Article · Tue Mar 01 04:00:00 EST 2011 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.83.056007· OSTI ID:21537465

Matagne, N; Stancu, Fl ^[1]

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1. University of Mons, Service de Physique Nucleaire et Subnucleaire, Place du Parc 20, B-7000 Mons (Belgium)

The masses of excited states of mixed orbital symmetry of nonstrange and strange baryons belonging to the lowest [70,1{sup -}] multiplet are calculated in the 1/N{sub c} expansion to order 1/N{sub c} with a new method which allows one to considerably reduce the number of linearly independent operators entering the mass formula. This study represents an extension to SU(6) of our work on nonstrange baryons, the framework of which was SU(4). The conclusion regarding the role of the flavor operator, neglected in previous SU(6) studies, is reinforced. Namely, both the flavor and spin operators contribute dominantly to the flavor-spin breaking.

• OSTI ID: 21537465
• Journal Information: Physical Review. D, Particles Fields, Journal Name: Physical Review. D, Particles Fields Journal Issue: 5 Vol. 83; ISSN PRVDAQ; ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
ANGULAR MOMENTUM
BARYONS
COMPOSITE MODELS
ELEMENTARY PARTICLES
ENERGY LEVELS
EXCITED STATES
EXPANSION
FERMIONS
FLAVOR MODEL
HADRONS
HYPERONS
LIE GROUPS
MASS
MASS FORMULAE
MATHEMATICAL MODELS
MULTIPLETS
PARTICLE MODELS
PARTICLE PROPERTIES
QUARK MODEL
SPIN
STRANGE PARTICLES
SU GROUPS
SU-6 GROUPS
SYMMETRY
SYMMETRY GROUPS