Analysis of the excited Ωc states as the 1/2± pentaquark states with QCD sum rules

• 作者: Hui-Juan Wang Zun-Yan Di Zhi-Gang Wang
• 来源期刊: 理论物理通讯（英文版）
• 年，卷（期）: 2021,（3）
• 所属期刊栏目: PARTICLE PHYSICS AND QUANTUM FIELD THEORY
• 页码范围: 78-93
• 页数: 16页
• 语种: 英文

摘要

We construct both the scalar-diquark-scalar-diquark-antiquark type and axialvector-diquark-axialvector-diquark-antiquark type interpolating currents to study the charmed pentaquark states suscū with JP=1/2±.We employ the QCD sum rules to investigate the masses and pole residues of the charmed pentaquark states by taking into account the vacuum condensates up to dimension 13 in the operator product expansion.Our calculation results indicate that the scalar-diquark-scalar-diquark-antiquark type and axialvector-diquark-axialvector-diquark-antiquark type charmed pentaquark states suscū with JP=1/2-can be possible candidates of the excited Ωc states observed in the LHCb collaboration.