ITP OpenIR  > SCI期刊论文
Shen, Chao-Wei; Jing, Hao-Jie; Guo, Feng-Kun; Wu, Jia-Jun
Exploring Possible Triangle Singularities in the Xi(-)(b) -> K- J/psi Lambda Decay
Source PublicationSYMMETRY-BASEL
Language英语
KeywordRESONANCE
AbstractWe analyze possible singularities in the J/psi Lambda invariant mass distribution of the Xi(-)(b) -> K- J/psi Lambda process via triangle loop diagrams. Triangle singularities in the physical region are found in 18 different triangle loop diagrams. Among those with Xi*-charmonium-L intermediate states, the one from the chi(c1)Xi(2120)Lambda loop, which is located around 4628 MeV, is found the most likely to cause observable effects. One needs S- and P-waves in chi(c1)Lambda and J/psi Lambda systems, respectively, when the quantum numbers of these systems are 1/2(+) or 3/2(+). When the quantum numbers of the Xi(2120) are J(P) = 1/2(+), 1/2 or 3/2(+), the peak structure should be sharper than the other J(P) choices. This suggests that although the whole strength is unknown, we should pay attention to the contributions from the Xi*-charmonium-L triangle diagram if structures are observed in the J/psi Lambda invariant mass spectrum experimentally. In addition, a few triangle diagrams with the D*(s1) (2700) as one of the intermediate particles can also produce singularities in the J/psi Lambda distribution, but at higher energies above 4.9 GeV.
2020
Volume12Issue:10Pages:1611
Cooperation Status国内
Subject AreaScience & Technology - Other Topics
MOST Discipline CatalogueMultidisciplinary Sciences
DOI10.3390/sym12101611
Indexed BySCIE
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/27250
CollectionSCI期刊论文
Affiliation1.[Shen, Chao-Wei
2.Jing, Hao-Jie
3.Guo, Feng-Kun
4.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China
5.[Jing, Hao-Jie
6.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China
Recommended Citation
GB/T 7714
Shen, Chao-Wei,Jing, Hao-Jie,Guo, Feng-Kun,et al. Exploring Possible Triangle Singularities in the Xi(-)(b) -> K- J/psi Lambda Decay[J]. SYMMETRY-BASEL,2020,12(10):1611.
APA Shen, Chao-Wei,Jing, Hao-Jie,Guo, Feng-Kun,&Wu, Jia-Jun.(2020).Exploring Possible Triangle Singularities in the Xi(-)(b) -> K- J/psi Lambda Decay.SYMMETRY-BASEL,12(10),1611.
MLA Shen, Chao-Wei,et al."Exploring Possible Triangle Singularities in the Xi(-)(b) -> K- J/psi Lambda Decay".SYMMETRY-BASEL 12.10(2020):1611.
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