Analysis of the pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
Analysis of the pentaquark states in the diquark-diquark-antiquark model with QCD sum rules
复制标题
用QCD和规则分析双夸克-双夸克-反夸克模型中的五夸克态
DOI：
10.1140/epjc/s10052-016-3983-2
复制
发表时间：
2016
影响因子：
4.4
通讯作者：
Wang Zhi-Gang
中科院分区：
文献类型：
--
作者：
Wang Zhi-Gang
本文构造了轴矢量-重夸克-重夸克-反夸克型和轴矢量-重夸克-标量-重夸克-反夸克型插补电流，计算了10维以下的真空凝聚在算子积展开中的贡献，并用QCD求和规则系统地研究了隐粲五夸克态的质量和极余。在计算中，我们使用公式来确定QCD谱密度的能量尺度。我们考虑了轻夸克的破缺效应，得到了具有奇异性的隐粲五夸克态的质量，可以在以后的实验数据中面对。
In this article, we construct both the axialvector-diquark–axialvector-diquark–antiquark type and the axialvector-diquark–scalar-diquark–antiquark type interpolating currents, then calculate the contributions of the vacuum condensates up to dimension 10 in the operator product expansion, and we study the masses and pole residues of thehidden-charm pentaquark states with the QCD sum rules in a systematic way. In calculations, we use the formulato determine the energy scales of the QCD spectral densities. We take into account thebreaking effects of the light quarks, and we obtain the masses of the hidden-charm pentaquark states with the strangeness, which can be confronted with the experimental data in the future.