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Remarks on the Baryon Mass Spectrum

1966; American Institute of Physics; Volume: 151; Issue: 4 Linguagem: Inglês

10.1103/physrev.151.1253

1536-6065

Imre Gyuk, S. F. Tuan,

High-Energy Particle Collisions Research

We review, modify slightly, and generalize earlier attempts to classify negative-parity baryon states in the intermediate energy range 1 to 2.2 BeV. The mass spectrum is analyzed in terms of (i) the basic ${70}^{\ensuremath{-}}$ and ${20}^{\ensuremath{-}}$ multiplets of $\mathrm{SU}(6)$ and (ii) the 70 ($L=1$) of $\mathrm{SU}(6)\ifmmode\times\else\texttimes\fi{}O(3)$. Connection between these possibilities and a fundamental structure composed of quarks and pseudoquarks for case (i) and quarks with `orbital' excitation $L=1$ for case (ii), underlying these mass regularities, are briefly discussed.