Masses and other parameters of the light hadrons

Journal Article · Wed Oct 01 04:00:00 EDT 1975 · Phys. Rev., D, v. 12, no. 7, pp. 2060-2076

DOI:https://doi.org/10.1103/PhysRevD.12.2060· OSTI ID:4089668

DeGrand, T; Jaffe, R L; Johnson, K; Kiskis, J

The masses and static parameters of the light hadrons (the pseudoscalar and vector meson nonets and the baryon octet and decuplet) are calculated using the bag model. The effects of quark kinetic energy, bag energy, strange-quark mass, colored-gluon exchange in lowest order, and energy associated with certain quantum fluctuations are included. These are parameterized by four constants which have fundamental significance and do not change from multiplet to multiplet. The fit to the spectrum is good. The ordering of all the states is given correctly. The intramultiplet splittings are very accurate for the baryon decuplet and reasonably good for the other multiplets. The isosinglet pseudoscalar mesons eta and eta' are treated separately in light of the special role that gluon intermediate states play in these states. Magnetic moments, weak decay constants, and charge radii are calculated. Where comparison with experiment is possible, we generally obtain improvement over the naive quark model. It is shown that exotic baryons do not exist as narrow resonances in this approximation to the bag theory. (AIP)

• Research Organization: Laboratory for Nuclear Science and Department of Physics, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
• Sponsoring Organization: USDOE
• NSA Number: NSA-33-015828
• OSTI ID: 4089668
• Journal Information: Phys. Rev., D, v. 12, no. 7, pp. 2060-2076, Journal Name: Phys. Rev., D, v. 12, no. 7, pp. 2060-2076; ISSN PRVDA
• Country of Publication: United States
• Language: English

Related Subjects

*BAG MODEL-- HADRONS
*BARYON DECUPLETS-- MASS SPECTRA
*BARYON OCTETS-- MASS SPECTRA
*HADRONS-- PARTICLE RADII
*MESON NONETS-- MASS SPECTRA
*QUARK MODEL-- HADRONS
641104*
COUPLING CONSTANTS
ETA MESONS
ETA-958 RESONANCES
EXOTIC RESONANCES
GLUON MODEL
N64240* --Physics (High Energy)--Particle Interactions & Properties (Theoretical)--Strong (General)
PSEUDOSCALAR MESONS
QUANTUM NUMBERS
VECTOR MESONS