Scalar meson exchange and the baryon spectra
Abstract
We explore the role of a scalar meson exchange interaction between quarks in a semirelativistic constituent quark model where the quarks are subject to a linear confinement. We search for a variational solution and show that the gap between the N=1 band and the ground state N=0 band increases with the strength of the scalar meson exchange interaction potential. This result has good implications on the description of the low-lying baryon resonances, especially on the Roper vs. negative parity resonances ordering.
- Publication:
-
arXiv e-prints
- Pub Date:
- September 1998
- DOI:
- 10.48550/arXiv.hep-ph/9809389
- arXiv:
- arXiv:hep-ph/9809389
- Bibcode:
- 1998hep.ph....9389S
- Keywords:
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- High Energy Physics - Phenomenology
- E-Print:
- 6 pages, RevTex, to appear in the Proceedings of the Third International Conference on "Quark Confinement and the Hadron Spectrum III, Jefferson Lab. (Newport News, USA), June 7-12, 1998, World Scientific (Singapore)