Formation and decay of negative-parity baryon resonances in a brokenU 6,6 model

1970 ◽  
Vol 67 (2) ◽  
pp. 153-216 ◽  
Author(s):  
J. Abramsky ◽  
R. C. King
Keyword(s):  
Negative Parity ◽  
Baryon Resonances

Non-Strange Baryon Resonances in the Isgur-Karl Model Including the N=3 Oscillator Shell

1994 ◽  
Vol 49 (7-8) ◽  
pp. 733-745
Author(s):  
Stefan Querbach ◽  
Martin Kretzschmar
Keyword(s):  
Constituent Quark Model ◽  
Negative Parity ◽  
Shift Analysis ◽  
Resonance Energies ◽  
Model Predictions ◽  
Excited Baryon ◽  
Oscillator Shell ◽  
Pion Nucleon ◽  
Configuration Mixing ◽  
Baryon Resonances

Abstract The nonrelativistic constituent quark model for excited baryon states in the version proposed by Isgur and Karl is extended toward higher energies by including all states containing up to three oscillator excitation quanta. At high energies baryon resonances with spins up to 9/2 become accessible. At all energies and in particular for lower spins strong configuration mixing is obtained. Model predictions are compared to the empirical resonance energies derived in the Karlsruhe-Helsinki pion nucleon phase shift analysis. A search is made for parameter sets that apply simultaneously to the positive parity and the negative parity states. Numerical results are presented and discussed in relation to experimental data and to other theoretical works.

scholarly journals χ-SU(3) BETHE SALPETER MODEL: EXTENSION TO SU(6) AND SU(8) SPIN-FLAVOR SYMMETRIES

2008 ◽  
Vol 23 (27n30) ◽  
pp. 2297-2300
Author(s):  
J. NIEVES ◽  
C. GARCÍA-RECIO ◽  
L. L. SALCEDO ◽  
V. MAGAS ◽  
A. RAMOS ◽  
...  
Keyword(s):  
Degrees Of Freedom ◽  
Negative Parity ◽  
S Wave ◽  
Charmed Baryons ◽  
Flavor Symmetries ◽  
Heavy Quark Symmetry ◽  
Model Extension ◽  
Shell Approximation ◽  
Baryon Resonances ◽  
D Wave

Consistent SU(6) and SU(8) spin-flavor extensions of the SU(3) flavor Weinberg-Tomozawa (WT) meson-baryon chiral Lagrangian are constructed, which incorporate vector meson degrees of freedom. In the charmless sector, the on-shell approximation to the Bethe-Salpeter (BS) approach successfully reproduces previous SU(3) WT results for the lowest-lying s–wave negative parity baryon resonances. It also provides some information on the dynamics of heavier ones and of the lightest d-wave negative parity resonances, as e.g. the Λ(1520). For charmed baryons the scheme is consistent with heavy quark symmetry, and our preliminary results in the strangeness-less charm C = +1 sector describe the main features of the three-star JP = 1/2− Λc(2595) and JP = 3/2− Λc(2625) resonances. We also find a second broad JP = 1/2− state close to the Λc(2595).

Baryon Resonances in Nuclei

1972 ◽  
Vol 33 (C5) ◽  
pp. C5-171-C5-182 ◽  
Author(s):  
Michael Danos
Keyword(s):  
Baryon Resonances

scholarly journals Complete Spectroscopy of negative parity states in208Pb with Ex< 6.3 MeV

2014 ◽  
Vol 66 ◽  
pp. 02049 ◽  
Author(s):  
A. Heusler ◽  
T. Faestermann ◽  
R. Hertenberger ◽  
H.-F. Wirth ◽  
P. von Brentano
Keyword(s):  
Negative Parity
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