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Scalar meson exchange and the spectrum of baryons

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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http://hal.in2p3.fr/in2p3-00003869
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Submitted on : Wednesday, January 19, 2000 - 11:34:59 AM
Last modification on : Thursday, November 19, 2020 - 12:58:26 PM

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P. Stassart, F. Stancu, J.-M. Richard. Scalar meson exchange and the spectrum of baryons. International Conference on Quark Confinement and the Hadron Spectrum 3, Jun 1998, Newport News, United States. ⟨in2p3-00003869⟩

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