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Scalar meson exchange and the baryon spectra

P. Stassart·Fl. Stancu·J. -M. Richard
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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.

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P. Stassart, Fl. Stancu, J. -M. Richard. 1998-09-15. Scalar meson exchange and the baryon spectra. https://arxiv.org/abs/hep-ph/9809389

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