In this paper, we design the Ξb(6227) as the pentaquark molecular states with quantum numbers $J^{P}=\frac {1}{2}^{\pm }$ to study its inner structure. We employ the QCD sum rule approach to calculate the masses and pole residues of pentaquark molecular states by taking the vacuum condensates up to dimension 13 in the operator product expansion. In comparison with the experiment data, it is found that our calculation results support assigning the Ξb(6227) to be the pentaquark molecular state with quantum number $J^{P}=\frac {1}{2}^{-}$ .

中文翻译：

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Ξb(6227) 作为 $\frac {1}{2}^{\pm }$ 五夸克分子态的 QCD 求和规则分析

在本文中，我们将Ξb(6227) 设计为具有量子数$J^{P}=\frac {1}{2}^{\pm }$ 的五夸克分子态来研究其内部结构。我们采用 QCD 和规则方法，通过在算子乘积展开中采用高达 13 维的真空凝聚来计算五夸克分子态的质量和极点残差。与实验数据对比发现，我们的计算结果支持将Ξb(6227)指定为量子数为$J^{P}=\frac{1}{2}^{-}$的五夸克分子态.