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Strong decays of (D)over-bar* K* molecules and the newly observed X-0,(1) states

文献类型：期刊论文

作者Huang, Yin2; Lu, Jun-Xu3,7; Xie, Ju-Jun1,4,6; Geng, Li-Sheng3,4,5,7
刊名EUROPEAN PHYSICAL JOURNAL C
出版日期2020-10-21
卷号80期号:10页码:8
ISSN号1434-6044
DOI10.1140/epjc/s10052-020-08516-4
通讯作者Geng, Li-Sheng(lisheng.geng@buaa.edu.cn)
英文摘要Lately, the LHCb Collaboration reported the discovery of two new states in the B+ -> D+D-K+ decay, i.e., X-0(2866) and X-1(2904). In the present work, we study whether these states can be understood as (D) over bar* K* molecules from the perspective of their two-body strong decays into D-K+ via triangle diagrams and three-body decays into (D) over bar *K pi. The coupling of the two states to (D) over bar *K* are determined from theWeinberg compositeness condition, while the other relevant couplings arewell known. The obtained strong decay width for the X0(2866) state, in marginal agreement with the experimental value within the uncertainty of the model, hints at a large (D) over bar* K* component in itswave function. On the other hand, the strong decay width for the X-1(2904) state, much smaller than its experimental counterpart, effectively rules out its assignment as a (D) over bar* K* molecule.
资助项目National Natural Science Foundation of China (NSFC)[11975041] ; National Natural Science Foundation of China (NSFC)[11735003] ; National Natural Science Foundation of China (NSFC)[11961141004] ; National Natural Science Foundation of China (NSFC)[11961141012] ; Youth Innovation Promotion Association CAS[2016367] ; Fundamental Research Funds for the Central Universities[2682020CX70] ; Fundamental Research Funds for the Central Universities[11947404]
WOS研究方向Physics
语种英语
WOS记录号WOS:000585185200001
出版者SPRINGER
资助机构National Natural Science Foundation of China (NSFC) ; Youth Innovation Promotion Association CAS ; Fundamental Research Funds for the Central Universities
源URL[http://119.78.100.186/handle/113462/139412]  
专题中国科学院近代物理研究所
通讯作者Geng, Li-Sheng
作者单位1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China
2.Southwest Jiaotong Univ, Sch Phys Sci & Technol, Chengdu 610031, Peoples R China
3.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China
4.Zhengzhou Univ, Sch Phys & Microelect, Zhengzhou 450001, Henan, Peoples R China
5.Beihang Univ, Beijing Adv Innovat Ctr Big Data Based Precis Med, Beijing 100191, Peoples R China
6.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 101408, Peoples R China
7.Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing 100191, Peoples R China
推荐引用方式
GB/T 7714		 Huang, Yin,Lu, Jun-Xu,Xie, Ju-Jun,et al. Strong decays of (D)over-bar* K* molecules and the newly observed X-0,(1) states[J]. EUROPEAN PHYSICAL JOURNAL C,2020,80(10):8.
APA Huang, Yin,Lu, Jun-Xu,Xie, Ju-Jun,&Geng, Li-Sheng.(2020).Strong decays of (D)over-bar* K* molecules and the newly observed X-0,(1) states.EUROPEAN PHYSICAL JOURNAL C,80(10),8.
MLA Huang, Yin,et al."Strong decays of (D)over-bar* K* molecules and the newly observed X-0,(1) states".EUROPEAN PHYSICAL JOURNAL C 80.10(2020):8.

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