Relativistic Quark-Model Results for Baryon Ground and Resonant States

Journal Article · Mon Oct 13 04:00:00 EDT 2008 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.3013036· OSTI ID:21251444

Plessas, W; Melde, T ^[1]

---

1. Theoretische Physik, Institut fuer Physik, Karl-Franzens-Universitaet Graz, Universitaetsplatz 5, A-8010 Graz (Austria)

Latest results from a study of baryon ground and resonant states within relativistic constituent quark models are reported. After recalling some typical spectral properties, the description of ground states, especially with regard to the nucleon and hyperon electromagnetic structures, is addressed. In the following, recent covariant predictions for pion, eta, and kaon partial decay widths of light and strange baryon resonances below 2 GeV are summarized. These results exhibit a characteristic pattern that is distinct from nonrelativistic or relativized decay studies performed so far. Together with a detailed analysis of the spin, flavor, and spatial structures of the wave functions, it supports a new and extended classification scheme of baryon ground and resonant states into SU(3) flavor multiplets.

• OSTI ID: 21251444
• Journal Information: AIP Conference Proceedings, Journal Name: AIP Conference Proceedings Journal Issue: 1 Vol. 1056; ISSN APCPCS; ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BAG MODEL
BETHE-SALPETER EQUATION
CLASSIFICATION
ELECTROMAGNETIC FORM FACTORS
ETA MESONS
FLAVOR MODEL
GROUND STATES
HYPERONS
KAONS
MULTIPLETS
NUCLEONS
PARTICLE DECAY
PIONS
QUANTUM CHROMODYNAMICS
RELATIVISTIC RANGE
RESONANCE PARTICLES
SPIN
SU-3 GROUPS
WAVE FUNCTIONS