论文标题
$λ$和$σ$激发和夸克模型
$Λ$ and $Σ$ Excitations and the Quark Model
论文作者
论文摘要
考虑（几乎）在早期分析中或最近的部分波分析中看到的所有超子共振，对$λ$和$σ$激发的光谱进行了审查。将频谱与旧的ISGUR-KARL模型和波恩模型进行了比较。这些模型使我们能够讨论观察到的共振的SU（3）结构。将SU（3）分解与SU（6）不同衰减模式之间的关系进行了比较。建议将七个$λ$状态归类为SU（3）单元状态。将超子频谱与$ n $和$δ$共振的光谱进行比较。
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.
