Role of the orbit-orbit component of the Fermi-Breit interaction in a quark-model description of the baryon spectra

1989 ◽  
Vol 62 (25) ◽  
pp. 2913-2916 ◽  
Author(s):  
S. K. Sharma ◽  
W. H. Blask ◽  
B. C. Metsch ◽  
M. G. Huber
2019 ◽  
Vol 99 (4) ◽  
Author(s):  
R. Bruschini ◽  
P. González

2018 ◽  
Vol 27 (12) ◽  
pp. 1840003
Author(s):  
J. D. Vergados ◽  
D. Strottman

We discus the role of Quantum Chromodynamics (QCD) in low energy phenomena involving the color-spin symmetry of the quark model. We then combine it with orbital and isospin symmetry to obtain wave functions with the proper permutation symmetry, focusing on multi-quark systems.


2005 ◽  
Vol 20 (08n09) ◽  
pp. 1785-1790 ◽  
Author(s):  
D. O. RISKA

The chiral quark model posits that pions couple to the axial current of constituent quarks. This chiral pion coupling governs the pion decays of baryon resonances and also implies pion and multipion interactions between the quarks. The qualitative features of this model for the description of pionic decay widths and baryon spectra are outlined. When the covariant quark model wave function for the nucleon is chosen so as to describe the empirical nucleon form factors the pion decay widths of the positive parity resonances are underpredicted. This indicates the presence of significant multiquark components in these resonances.


2011 ◽  
Vol 02 ◽  
pp. 178-182 ◽  
Author(s):  
P. GONZÁLEZ

We show that the charmonium spectrum may be reproduced to a good precision by means of a semirelativistic quark model approach based on a universal static potential effectively incorporating effects from sea quark-antiquark pairs. Detailed predictions for upcoming data are derived.


2017 ◽  
Vol 134 ◽  
pp. 02005 ◽  
Author(s):  
Bernard Ch. Metsch ◽  
Herbert-R. Petry

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