Scalar meson exchange and the baryon spectra

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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.
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)

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High Energy Physics - Phenomenology

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http://salesiana.dossiersoluciones.com/handle/123456789/48269

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/hep-ph/9809389
 http://arxiv.org/abs/hep-ph/9809389

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arXiv