多强子分子态：现状与展望 | Science Bulletin

文章

20

22

速递

Multi-hadron molecules: status and prospect

Tian-Wei Wu, Ya-Wen Pan, Ming-Zhu Liu, Li-Sheng Geng

Science Bulletin, 2022, 67(17): 1735–1738

10.1016/j.scib.2022.08.007

简介

2003年以来，高能物理实验发现的大量所谓的奇特强子态，例如五夸克态、四夸克态、XYZ粒子等，引起了理论和实验物理学家们的广泛关注。这些奇特强子态中的相当一部分可以解释为两个色单态强子基于剩余强相互作用束缚形成的强子分子态。这表明特定强子之间存在很强的吸引相互作用，因而很有可能形成类似于原子核、超核的多强子集团。本文重点介绍了近期在多强子分子态方面的工作并对未来的研究进行展望。

Fig. 1  Multi-hadron states built upon the molecular picture where is a bound state of DK; X(3872) a bound state of ,  a bound state of , and  a bound state of . From inside to outside, the innermost circle encompasses the six quarks, the next circle encompasses the  and  baryons, the following circle encompasses the two–hadron molecules while the outermost circle encompasses the three-hadron molecules.

Fig. 2  Strong decays of the DDK bound state R(4140) to  and 

via triangle diagrams.

通讯作者

耿立升 北京航空航天大学物理科学与核能工程学院教授。研究方向：粒子物理与原子核物理、深度学习在医学物理、粒子物理及核物理中的应用。 

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栏目介绍

展望 Perspectives

介绍当前迅速发展的某个研究领域的突出进展, 归纳总结该领域近期取得的最新成果, 评价其创新性和科学意义(一般不超过3个印刷面, 可包含1-2个图表, 参考文献一般不超过15条)。