Cascade Spectroscopy and Recent Xi* Photo-production Results from CLAS

Conference · Sun Aug 01 04:00:00 EDT 2010 · AIP Conf.Proc.

DOI:https://doi.org/10.1063/1.3483392· OSTI ID:990283

Goetz, John T

Doubly-strange baryon resonances provide new insights into baryon structure. The standard QCD Lagrangian implies that for every N* and Delta* resonance, there should be a corresponding Xi (cascade resonance). This is due to the flavor symmetry of the strong force. Therefore, one can investigate baryon structure by observing aspects of the doubly-strange baryons like regularities such as parity doublets. At energies above approximately 1.5 GeV, the light-quark baryon resonances are broad and overlap while the cascades in this range are narrow and therefore more readily observed. An overview of the world cascade spectrum and a comparison to the lighter baryon spectra will be presented. Recent results from an on-going analysis from the G12 (5.4 GeV) photo-production experiment using the CLAS detector at JLab will be highlighted.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 990283
• Report Number(s): JLAB-PHY-09-1111; DOE/OR/23177-1341
• Conference Information: Journal Name: AIP Conf.Proc. Journal Issue: 1 Journal Volume: 1257
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYONS
HADRONS
LAGRANGIAN FUNCTION
PARITY
QUANTUM CHROMODYNAMICS
RESONANCE
SPECTRA
SPECTROSCOPY
SYMMETRY