单底重子系统中重子-重子相互作用的系统研究
Systematic study of baryon-baryon interactions in singly bottomed systems
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中文总结 AI 辅助
本研究在手征夸克模型中系统探究单底重子系统的重子-重子相互作用,发现低同位旋道等特性对束缚态形成的影响,得到多个束缚态候选体,其结果有待实验验证。
中文摘要 AI 辅助
本工作在手征夸克模型框架内系统研究了单底双重子系统中的重子-重子相互作用,并搜寻可能的束缚态。通过探究重子-重子相互作用,我们发现低同位旋道倾向于产生更强的吸引相互作用,更易形成束缚态;十重态-十重态系统往往表现出更强的吸引力,支持更多的束缚态,而八重态-八重态系统通常吸引力较弱,束缚态解更少;八重态-十重态系统的束缚行为一般介于上述两种情况之间。我们得到了多个束缚态,包括ΔΣ_b^*(同位旋I、自旋J分别为1/2 0、1/2 1、1/2 2、1/2 3、3/2 3)、ΔΣ_b(I、J为1/2 1、1/2 2、3/2 1、3/2 2)、NΣ_b^*(I、J为1/2 2)、ΣΣ_b(I、J为0 0、0 1、1 1)、ΣΣ_b^*(I、J为0 1、0 2)、Σ^*Σ_b(I、J为0 1、0 2)、Σ^*Σ_b^*(I、J为0 0、0 1、0 2、0 3、1 3)。仍需对相应散射过程开展进一步研究,以确定这些束缚态候选体是否可被识别,这些态值得后续实验探究。
英文摘要
In this work, we systematically investigate the baryon-baryon interactions in singly bottomed dibaryon systems within the chiral quark model and search for possible bound states. By exploring the baryon-baryon interaction, we find that low-isospin channels tend to generate deeper attractive interactions and are prone to form bound states. We also find that decuplet-decuplet systems tend to show stronger attraction and support a larger number of bound states, whereas octet-octet systems generally exhibit weaker attraction and fewer bound solutions. The binding behavior of octet-decuplet systems generall lies between these two cases. Several bound states are obtained, which are $ΔΣ_b^*$ with $IJ=\frac{1}{2}0$, $\frac{1}{2}1$, $\frac{1}{2}2$, $\frac{1}{2}3$, and $\frac{3}{2}3$, the $ΔΣ_b$ with $IJ=\frac{1}{2}1$, $\frac{1}{2}2$, $\frac{3}{2}1$, and $\frac{3}{2}2$, the $NΣ_b^*$ with $IJ=\frac{1}{2}2$, the $ΣΣ_b$ with $IJ=00$, $01$, and $11$, the $ΣΣ_b^*$ with $IJ=01$ and $02$, the $Σ^*Σ_b$ with $IJ=01$ and $02$, and the $Σ^*Σ_b^*$ with $IJ=00$, $01$, $02$, $03$, and $13$. Further investigations of the corresponding scattering processes are still required to determine whether these bound-state candidates can be identified. These states deserve further experimental investigation.
发表机构
- Nanjing Normal University(南京师范大学)
- Yangzhou University(扬州大学)
- Zunyi Normal College(遵义师范学院)
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