Baryon Spectroscopy and Operator Construction in Lattice QCD

Conference · Thu Jul 01 00:00:00 EDT 2004

OSTI ID:838677

Basak, S; Sato, I; Wallace, S; Edwards, R; Richards, D; Fiebig, R; Fleming, G; Heller, U; Morningstar, C

This talk describes progress at understanding the properties of the nucleon and its excitations from lattice QCD. I begin with a review of recent lattice results for the lowest-lying states of the excited baryon spectrum. The need to approach physical values of the light quark masses is emphasized, enabling the effects of the pion cloud to be revealed. I then outline the development of techniques that will enable the extraction of the masses of the higher resonances. I will describe how such calculations provide insight into the structure of the hadrons, and enable comparison both with experiment, and with QCD-inspired pictures of hadron structure, such as calculations in the limit of large N{sub c}.

• Research Organization: Thomas Jefferson National Accelerator Facility, Newport News, VA (US)
• Sponsoring Organization: US Department of Energy; USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC05-84ER40150
• OSTI ID: 838677
• Report Number(s): JLAB-THY-05-320; DOE/ER/40150-3265
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
BARYON SPECTROSCOPY
BARYONS
CLOUDS
CONSTRUCTION
HADRONS
NUCLEONS
PIONS
QUANTUM CHROMODYNAMICS
QUARKS