AI 中文总结
本研究通过QCD光锥求和规则计算$B\Sigma_b$等三种构型双重底分子五夸克的磁偶极矩，发现其对内部自旋结构和夸克组成敏感，为实验探测这类五夸克提供了可检验的预测。
AI 中文摘要
我们研究自旋宇称为$J^P=\tfrac{1}{2}^-$和$\tfrac{3}{2}^-$的双重底五夸克态的磁偶极矩，这些态被解释为$B\Sigma_b$、$B\Sigma_b^{*}$和$B^{*}\Sigma_b$构型中的强子分子。分析在QCD光锥求和规则框架内进行，采用光子分布振幅。结果表明，磁偶极矩对这些态的内部自旋结构和夸克组成具有强敏感性：$B\Sigma_b$构型中轻夸克部分贡献占主导，$B\Sigma_b^{*}$的磁矩主要由重底夸克决定，$B^{*}\Sigma_b$分子态的轻、重夸克部分均有建设性贡献，使磁偶极矩显著增强。这些发现表明，磁偶极矩是分子型双重底五夸克内部结构的灵敏探针，并为未来实验研究提供可检验的预测。
英文摘要
We investigate the magnetic dipole moments of doubly-bottom pentaquark states with spin-parities $J^P=\tfrac{1}{2}^-$ and $\tfrac{3}{2}^-$, interpreted as hadronic molecules in the $BΣ_b$, $BΣ_b^{*}$, and $B^{*}Σ_b$ configurations. The analysis is performed within the framework of QCD light-cone sum rules employing photon distribution amplitudes. Our results demonstrate a strong sensitivity of the magnetic dipole moments to the internal spin structure and quark composition of the states. In particular, the light-quark sector provides the dominant contribution in the $BΣ_b$ configuration, while the magnetic moment of $BΣ_b^{*}$ is largely governed by the heavy bottom quark. For the $B^{*}Σ_b$ molecular state, both light and heavy sectors contribute constructively, leading to a significantly enhanced magnetic dipole moment. These findings indicate that magnetic dipole moments constitute a sensitive probe of the internal structure of molecular-type doubly-bottom pentaquarks and provide testable predictions for future experimental studies.
Comments39 pages, 3 Tables, 2 figures. To be published in Chinese Physics C
Journal refChin.Phys.C 50 (2026) 11, 113107
