The light baryon spectrum and the exchange of pseudoscalar and vector mesons among constituent quarks

Details The light baryon spectrum and the exchange of pseudoscalar and vector mesons among constituent quarks The light baryon spectrum and the exchange of pseudoscalar and vector mesons among constituent quarks

1998-09-04

arxiv.org/abs/hep-ph/9809258v1

Physics

High Energy Physics

High Energy Physics - Phenomenology

to appear in the Proc. of the 3rd Int. Conf. on Quark Confinement and the Hadron Spectrum (CONFIII), JLab (Newport News, USA),

Scientific paper

The effects of the exchanges of both pseudoscalar and vector mesons among constituent quarks on the mass spectra of light baryons are investigated, paying particular attention to the contribution of tensor and spin-orbit terms. It is shown that the latter ones heavily affect the calculated spectra at variance with the empirical observation of the weakness of the baryon spin-orbit splittings. The relativistic suppression of the strength of the interaction among light quarks is argued to be a possible way to reproduce the light-baryon mass spectra.

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