论文标题
夸克模型中多重危险的baryon共鸣的强烈衰减
Strong decays of multi-strangeness baryon resonances in the quark model
论文作者
论文摘要
多危险$ξ$和$ω$ baryon共振的衰减属性通过包括相对论校正来研究组成夸克模型。计算并测试了内部夸克配置的各种$ξ$和$ω$共振的强衰减宽度，以固定其旋转式（$ j^p $）量子数和内部结构。我们发现，多链扇区中的类似roper的共鸣具有较大的衰减宽度，在轻巧和重型的巴里昂领域与兄弟姐妹相似。此外，我们获得了$ω（2012）$的衰减比为$γ{（（ω\ to 2 \ bar {k}π）} /γ{（ω\ toξ\ bar {k}} = 4.5 \％$，与$ j^p = 3 /2^ - $ nes n y nes n y nes nes nes nes n y yes n y yes n yes n y yes n Y YES $ j^p = 3 /2^ - $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ $ nes nes nes nes是一致的。该观察结果认为，$ω（2012）$自然可以将其解释为夸克模型中的三夸克状态。系统地分析了其他低洼$ξ$和$ω$共振的衰减，这对于在未来的实验中揭示这些共振的结构非常有用。
Decay properties of multi-strangeness $Ξ$ and $Ω$ baryon resonances are investigated within the constituent quark model by including relativistic corrections. The strong decay widths of various $Ξ$ and $Ω$ resonances are computed and tested for internal quark configurations to pin down their spin-parity ($J^P$) quantum numbers and internal structures. We found that the Roper-like resonances in the multi-strangeness sector have large decay widths bearing resemblances to their siblings in light and heavy baryon sectors. In addition, we obtained the decay ratio for the $Ω(2012)$ as $Γ{(Ω\to Ξ\bar{K} π)} / Γ{(Ω\to Ξ\bar{K})}=4.5\%$, which is consistent with the experimental data when $J^P=3/2^-$ is assigned. This observation holds the possibility that the $Ω(2012)$ could naturally be explained as a three-quark state in the quark model. The decays of other low-lying $Ξ$ and $Ω$ resonances are systematically analyzed, which would be useful to unveil the structure of these resonances in future experiments.
