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Faddeev study of heavy-baryon spectroscopy

AutorGarcilazo, H.; Vijande, Javier ; Valcarce, A.
Palabras claveNucleon-nucleon interaction
Nonrelativistic quark models
Flip-flop model
Hyperfine interactions
Charmed baryons
Baryon spectra
Fecha de publicaciónmay-2007
EditorInstitute of Physics Publishing
CitaciónJournal of Physics G - Nuclear and Particle Physics 34(5): 961-976 (2007)
ResumenWe investigate the structure of heavy baryons containing a charm or a bottom quark. We employ a constituent quark model successful in the description of the baryon-baryon interaction which is consistent with the light-baryon spectra. We solve exactly the three-quark problem by means of the Faddeev method in momentum space. Heavy-baryon spectrum shows a manifest compromise between perturbative and nonperturbative contributions. The flavour dependence of the one-gluon exchange is analysed. We assign quantum numbers to some already observed resonances, and we predict the first radial and orbital excitations of all states with J = 1/2 or 3/2. We combine our results with heavy-quark symmetry and lowest order SU(3) symmetry breaking to predict the masses and quantum numbers of six still non-measured ground-state beauty baryons.
Descripción16 pages, 3 figures.-- PACS nrs.: 12.39.Jh, 12.39.Pn, 14.20.-c.-- ISI Article Identifier: 000246249100015.-- ArXiv pre-print available at: http://arxiv.org/abs/hep-ph/0703257
Versión del editorhttp://dx.doi.org/10.1088/0954-3899/34/5/014
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