$Λ$和$Σ$激发与夸克模型
$Λ$ and $Σ$ Excitations and the Quark Model
摘要：
$Λ$和$Σ$激发的频谱进行审查考虑到（几乎）所有的超子共振，看到在早期的分析或在最近的分波分析之一。并与Isgur-Karl模型和Bonn模型进行了比较。这些模型使我们能够讨论所观察到的共振的SU（3）结构。比较了不同衰变模之间的SU（3）分解和SU（6）关系。七个$Λ$态被认为是SU（3）单重态。并将超子谱与$N$和$Δ$共振谱进行了比较。
英文摘要：
The spectrum of $Λ$ and $Σ$ excitations is reviewed taking into account (nearly) all hyperon resonances which were seen in early analyses or in one of the recent partial-wave analyses. The spectrum is compared with the old Isgur-Karl model and the Bonn model. These models allows us to discuss the SU(3) structure of the observed resonances. The SU(3) decomposition is compared with SU(6) relations between the different decay modes. Seven $Λ$ states are proposed to be classified as SU(3) singlet states. The hyperon spectrum is compared with the spectrum of $N$ and $Δ$ resonances.
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