2007/02/28 by Yongseok Oh · 4 citations
Physics and Astronomy · #High-Energy Particle Collisions Research #Particle physics theoretical and experimental studies #Quantum Chromodynamics and Particle Interactions #hep-ex #hep-ph #nucl-th
paper · pdf · doi:10.1103/physrevd.75.074002
published as Phys.Rev.D75:074002,2007 · 17 pages, REVTeX, to be published in Phys. Rev. D
arxiv created 2007/03/13 · openalex publication_date 2007/04/05 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
The mass spectrum and magnetic moments of \ensuremathΞ and \ensuremathΩ baryon resonances are investigated in the bound-state approach of the Skyrme model. The empirical hyperon spectrum shows that several hyperon resonances share a pattern of (approximately) equal mass spacings between the states of same spin but of opposite parity. It is found that this pattern can be explained mostly by the energy difference between the P-wave and S-wave kaons bound to the soliton. Although one cannot exclude the possibility that these states can be described as pion-hyperon resonances, the present approach predicts that \ensuremathΞ(1620) and \ensuremathΞ(1690) have JP=(1)/(2)^\ensuremath-, while \ensuremathΞ(1950) has JP=(1)/(2)+. The differences with the quark model predictions for the \ensuremathΞ and \ensuremathΩ baryon spectrum are pointed out. Several relations for the masses and magnetic moments of those resonances are also obtained.