Fine structure of pentaquark multiplets in the dynamical diquark model

Fine structure of pentaquark multiplets in the dynamical diquark model
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DOI:
10.1103/physrevd.104.114028
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发表时间:
2021-10
期刊:
影响因子:
5
通讯作者:
Jesse F. Giron;R. Lebed
Jesse F. Giron;R. Lebed
中科院分区:
物理与天体物理2区
文献类型:
--
作者:
Jesse F. Giron;R. Lebed

文献摘要

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我们应用动力学双夸克模型预测了无味和开奇扇区中的隐魅五夸克态谱。仅使用在四夸克砂P波多重态中引入的哈密顿参数,该模型自然地产生由最近的LHCb结果支持的Pc结构的能级间距。此外,利用从隐魅开奇四夸克态(Zcs)数据得到的模型输入,我们预测了Pcs态的谱,包括最近观测到的Pcs(4459)。我们发现,迄今为止观察到的所有五夸克候选者都属于1P多重态,因此具有正宇称。
We apply the dynamical diquark model to predict the spectrum of hidden-charm pentaquark states in both unflavored and open-strange sectors. Using only Hamiltonian parameters introduced in the tetraquark Sand P -wave multiplets, the model naturally produces the level spacing supported by the most recent LHCb results for Pc structures. Furthermore, using model inputs obtained from data of hidden-charm, open-strange tetraquarks (Zcs), we predict the spectrum of Pcs states, including the recently observed Pcs(4459). We find all pentaquark candidates observed to date to belong to the 1P multiplet and hence have positive parity.