Mass formula for strange baryons in large N{sub c} QCD versus quark model

Journal Article · Sat Dec 01 00:00:00 EST 2007 · Physical Review. D, Particles Fields

DOI:https://doi.org/10.1103/PHYSREVD.76.116005· OSTI ID:21023969

Semay, Claude; Buisseret, Fabien ^[1]; Stancu, Florica ^[2]

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1. Groupe de Physique Nucleaire Theorique, Universite de Mons-Hainaut, Academie Universitaire Wallonie-Bruxelles, Place du Parc 20, B-7000 Mons (Belgium)
2. University of Liege, Institute of Physics B5, Sart Tilman, B-4000 Liege 1 (Belgium)

A previous work establishing a connection between a quark model, with relativistic kinematics and a Y-confinement plus one gluon exchange, and the 1/N{sub c} expansion mass formula is extended to strange baryons. Both methods predict values for the SU(3)-breaking mass terms which are in good agreement with each other. Strange and nonstrange baryons are shown to exhibit Regge trajectories with an equal slope, but with an intercept depending on the strangeness. Both approaches agree on the value of the slope and of the intercept, and on the existence of a single good quantum number labeling the baryons within a given Regge trajectory.

• OSTI ID: 21023969
• Journal Information: Physical Review. D, Particles Fields, Vol. 76, Issue 11; Other Information: DOI: 10.1103/PhysRevD.76.116005; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
GLUONS
HYPERONS
MASS FORMULAE
QUANTUM CHROMODYNAMICS
REGGE TRAJECTORIES
RELATIVISTIC RANGE
REST MASS
STRANGENESS
SU-3 GROUPS
SYMMETRY BREAKING