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New narrow LHCb pentaquarks as lowest antiquark-diquark-diquark systems
The European Physical Journal A ( IF 2.7 ) Pub Date : 2020-05-19 , DOI: 10.1140/epja/s10050-020-00151-7
A. N. Semenova , V. V. Anisovich , A. V. Sarantsev

The antiquark-diquark-diquark model describes pentaquark states both in terms of quarks and hadrons. We discuss pentaquark states with hidden charm \(P(\bar{c} cuud)\) discovered in the \(J/\varPsi p\) spectrum by the LHCb collaboration. We consider three pentaquark states as members of the lowest (S-wave) multiplet and discuss the mass splitting scheme. The latest LHCb data for pentaquarks with hidden charm provide an opportunity to make an assumption about the diquark content of the pentaquark states. We give a classification for the LHCb pentaquarks and define recombination channels for these states.

中文翻译:

新的窄LHCb五夸克作为最低的反夸克-双夸克-双夸克系统

反夸克-双夸克-双夸克模型以夸克和强子的形式描述了五夸克的状态。我们讨论由LHCb合作在\(J / \ varPsi p \)谱中发现的具有隐藏的魅力\(P(\ bar {c} cuud)\)的五夸克状态。我们将五个夸克状态视为最低(S波)多重峰的成员,并讨论了质量分裂方案。具有隐藏的魅力的五方夸克的最新LHCb数据提供了一个机会来假设五方夸克州的双夸克含量。我们给出了LHCb五夸克的分类,并定义了这些状态的重组通道。
更新日期:2020-05-19
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