Hadronic molecules composed of a doubly charmed tetraquark state and a charmed meson

Hadronic molecules composed of a doubly charmed tetraquark state and a charmed meson
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由双粲四夸克态和粲介子组成的强子分子

DOI:
10.1140/epjc/s10052-022-10881-1
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发表时间:
2022-08
期刊:
The European Physical Journal C
影响因子:
--
通讯作者:
Li-Sheng Geng
Li-Sheng Geng
中科院分区:
其他
文献类型:
--
作者:
Ya-Wen Pan;Tian-Wei Wu;Ming-Zhu Liu;Li-Sheng Geng

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LHCb 合作组织于 2019 年发现的三种五夸克态 和 可以排列成强子分子的完整重夸克自旋对称多重态。在重夸克质量极限下,重子可以通过重反夸克双夸克对称性与同位旋 1 的双粲四夸克态(即(,,))相关联,这表明相互作用与重反夸克双夸克对称破缺之前的相互作用相同。在这项工作中,我们利用接触范围有效场理论对系统进行了系统的研究,证明了由双粲四夸克态和粲介子组成的强子分子的完整重夸克自旋对称多重态的存在。这些是一种新型强子分子,如果被发现,可以更好地理解迄今为止发现的许多奇异强子。此外,我们还总结了强子不同组合形成的三粲六夸克态。特别是,我们证明该系统可以通过库仑力结合,类似于氢原子。
The three pentaquark states,,and, discovered by the LHCb Collaboration in 2019, can be arranged into a complete heavy quark spin symmetry multiplet of hadronic molecules of. In the heavy quark mass limit, thebaryons can be related to the doubly charmed tetraquark states of isospin 1, i.e.,(,,), via heavy antiquark diquark symmetry, which dictates that theinteractions are the same as theinteractions up to heavy antiquark diquark symmetry breakings. In this work, we employ the contact-range effective field theory to systematically study thesystems, and we show the existence of a complete heavy quark spin symmetry multiplet of hadronic molecules composed of a doubly charmed tetraquark state and a charmed meson. These are a new kind of hadronic molecules and, if discovered, can lead to a better understanding of the many exotic hadrons discovered so far. In addition, we summarise the triply charmed hexaquark states formed by different combinations of hadrons. In particular, we show thatsystem can bind by the Coulomb force, which is analogous to a hydrogenlike atom.
X(7200) 是 X(3872) 的重反夸克双夸克对称伙伴吗?
DOI: 10.1140/epjc/s10052-021-08980-6
发表时间: 2020-12
影响因子: 4.4
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