Near Threshold Structures and Hadronic Molecules

doi:10.1007/s00601-021-01649-6

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	Near Threshold Structures and Hadronic Molecules
	Dong, Xiang-Kun ; Guo, Feng-Kun ; Zou, Bing-Song
刊名	FEW-BODY SYSTEMS
	2021
卷号	62 期号:3 页码:61
ISSN号	0177-7963
DOI	10.1007/s00601-021-01649-6
英文摘要	Many candidates of the so-called exotic hadrons have been observed experimentally and most of them are located close to the threshold of a pair of hadrons. The general behavior of the near-threshold line shapes of invariant mass distributions is discussed. To be precise, the threshold cusp can show up as a peak only for channels with attractive interaction, and the width of the cusp is inversely proportional to the reduced mass relevant for the threshold. We argue that there should be (near-)threshold structures for any pair of heavy-quark and heavy-antiquark hadrons, which have attractive interaction at threshold, in the invariant mass distribution of a heavy quarkonium and light hadrons that couple to that open-flavor hadron pair. Predictions of the possible pairs that have near-threshold peaks are given for the ground state heavy hadrons based on the interaction saturated by vector mesons. We also give a survey of the possible hadronic molecules composed of a pair of charmed-anticharmed hadrons by solving the Bethe-Salpeter equation with constant interactions and the experimental candidates of hadronic molecules fit this spectrum well.
学科主题	Physics
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/27410]
专题	理论物理研究所_理论物理所1978-2010年知识产出
作者单位	1.[Dong, Xiang-Kun 2.Guo, Feng-Kun 3.Chinese Acad Sci, CAS Key Lab Theoret Phys, Inst Theoret Phys, Zhong Guan Cun East St 55, Beijing 100190, Peoples R China 4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China 5.Cent South Univ, Sch Phys, Changsha 410083, Peoples R China
推荐引用方式 GB/T 7714	Dong, Xiang-Kun,Guo, Feng-Kun,Zou, Bing-Song. Near Threshold Structures and Hadronic Molecules[J]. FEW-BODY SYSTEMS,2021,62(3):61.
APA	Dong, Xiang-Kun,Guo, Feng-Kun,&Zou, Bing-Song.(2021).Near Threshold Structures and Hadronic Molecules.FEW-BODY SYSTEMS,62(3),61.
MLA	Dong, Xiang-Kun,et al."Near Threshold Structures and Hadronic Molecules".FEW-BODY SYSTEMS 62.3(2021):61.