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Hidden charm pentaquark states in a diquark model
The European Physical Journal A ( IF 2.6 ) Pub Date : 2021-07-18 , DOI: 10.1140/epja/s10050-021-00542-4
Pan-Pan Shi 1, 2 , Fei Huang 1 , Wen-Ling Wang 3
Affiliation  

The mass spectrum of hidden charm pentaquark states composed of two diquarks and an antiquark are calculated by use of an effective Hamiltonian which includes explicitly the spin, color, and flavor dependent interactions. The results show that the \(P_c(4312)^+\) and \(P_c(4440)^+\) states could be explained as hidden charm pentaquark states with isospin and spin-parity \(IJ^P=1/2\left( 3/2^-\right) \), the \(P_c(4457)^+\) state could be explained as a hidden charm pentaquark state with \(IJ^P=1/2\left( 5/2^-\right) \), and the \(P_{cs}(4459)^+\) state could be explained as a hidden charm pentaquark state with \(IJ^P=0\left( 1/2^-\right) \) or \(0\left( 3/2^-\right) \). Predications for the masses of other possible pentaquark states are also given, and the possible decay channels of these hidden charm pentaquark states are discussed.



中文翻译:

Diquark 模型中隐藏的魅力五夸克态

由两个双夸克和一个反夸克组成的隐藏魅力五夸克态的质谱是通过使用有效的哈密顿量计算出来的,其中明确包括自旋、颜色和风味相关的相互作用。结果表明\(P_c(4312)^+\)\(P_c(4440)^+\)态可以解释为具有同位旋和自旋奇偶性\(IJ^P=1/2)的隐藏魅力五夸克态\left( 3/2^-\right) \)\(P_c(4457)^+\)状态可以解释为隐藏的魅力五夸克状态,其中\(IJ^P=1/2\left( 5/ 2^-\right) \),而\(P_{cs}(4459)^+\)状态可以解释为隐藏的魅力五夸克状态,其中\(IJ^P=0\left( 1/2^- \right) \)\(0\left( 3/2^-\right) \)。还给出了其他可能的五夸克态的质量的预测,并讨论了这些隐藏的魅力五夸克态的可能衰变通道。

更新日期:2021-07-19
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