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Baryon Resonance Spectra in a Relativistic Potential of Independent Quarks
並列摘要
The mass spectra for some of the baryon resonances of the particle data group with three-and four-star status are calculated, and a unified description of the ground states and excitation spectra of baryons are provided in the framework of a relativistic potential model of independent quarks, taking into account perturbatively the correction due to the one-gluon-exchange interaction along with that due to the Goldstone boson exchange interaction between the constituent quarks and that due to center-of-mass motion. The baryons are assumed here as an assembly of independent quarks confined in a first approximation by an effective square-root potential, which presumably represents the non-perturbative multigluon interactions including gluon self-couplings. The calculated masses of the three-and four-star baryon resonances are found to be in good agreement with the tabulations of the Particle Data Group. The results obtained for the ground states and excitation spectra of the baryons are in reasonable agreement with experiment, and the model explains the correct level ordering of the positive- and negative-parity excitations in the N, Δ, and Λ spectra.
並列關鍵字
無資料延伸閱讀
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