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Visible narrow cusp structure in Lambda(+)(c)-> pK(-)pi(+) enhanced by triangle singularity

文献类型：期刊论文

作者Liu, Xiao-Hai1,2; Li, Gang3,5,6; Xie, Ju-Jun4,7,8; Zhao, Qiang5,6,7,9
刊名PHYSICAL REVIEW D
出版日期2019-09-06
卷号100期号:5页码:6
ISSN号2470-0010
DOI10.1103/PhysRevD.100.054006
通讯作者Liu, Xiao-Hai(xiaohai.liu@tju.edu.cn)
英文摘要A resonance-like structure as narrow as 10 MeV is observed in the K- p invariant mass distributions in Lambda(+)(c)-> pK(-)pi(+) at Belie. Based on the large data sample of about 1.5 million events and the small bin width of just 1 MeV for the K- p invariant mass spectrum, the narrow peak is found precisely lying at the Lambda eta threshold. While lacking evidence for a quark model state with such a narrow width at this mass region, we find that this narrow structure can be naturally identified as a threshold cusp but enhanced by the nearby triangle singularity via the Lambda-a(0)(980)+ or eta-Sigma(1660)(+) rescatterings.
WOS关键词CHIRAL DYNAMICS ; STATE ; DECAY ; SIGMA ; LAMBDA(+)(C) ; SEARCH
资助项目National Natural Science Foundation of China (NSFC)[11975165] ; National Natural Science Foundation of China (NSFC)[11425525] ; National Natural Science Foundation of China (NSFC)[11521505] ; National Natural Science Foundation of China (NSFC)[11675091] ; National Natural Science Foundation of China (NSFC)[11735003] ; National Natural Science Foundation of China (NSFC)[11835015] ; National Natural Science Foundation of China (NSFC)[11475227] ; Deutsche Forschungsgemeinschaft (DFG) ; NSFC[11621131001] ; DFG[TRR110] ; National Key Basic Research Program of China[2015CB856700] ; Youth Innovation Promotion Association CAS[2016367]
WOS研究方向Astronomy & Astrophysics ; Physics
语种英语
WOS记录号WOS:000485196600003
出版者AMER PHYSICAL SOC
资助机构National Natural Science Foundation of China (NSFC) ; Deutsche Forschungsgemeinschaft (DFG) ; NSFC ; DFG ; National Key Basic Research Program of China ; Youth Innovation Promotion Association CAS
源URL[http://119.78.100.186/handle/113462/132694]  
专题中国科学院近代物理研究所
通讯作者Liu, Xiao-Hai
作者单位1.Tianjin Univ, Ctr Joint Quantum Studies, Sch Sci, Tianjin 300350, Peoples R China
2.Tianjin Univ, Dept Phys, Sch Sci, Tianjin 300350, Peoples R China
3.Qufu Normal Univ, Sch Phys & Engn, Jining 273165, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Gansu, Peoples R China
5.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
6.Chinese Acad Sci, Theoret Phys Ctr Sci Facil, Beijing 100049, Peoples R China
7.Univ Chinese Acad Sci, Sch Nucl Sci & Technol, Beijing 100049, Peoples R China
8.Zhengzhou Univ, Sch Phys & Engn, Zhengzhou 450001, Henan, Peoples R China
9.Hunan Normal Univ, SICQEA, Changsha 410081, Hunan, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Xiao-Hai,Li, Gang,Xie, Ju-Jun,et al. Visible narrow cusp structure in Lambda(+)(c)-> pK(-)pi(+) enhanced by triangle singularity[J]. PHYSICAL REVIEW D,2019,100(5):6.
APA Liu, Xiao-Hai,Li, Gang,Xie, Ju-Jun,&Zhao, Qiang.(2019).Visible narrow cusp structure in Lambda(+)(c)-> pK(-)pi(+) enhanced by triangle singularity.PHYSICAL REVIEW D,100(5),6.
MLA Liu, Xiao-Hai,et al."Visible narrow cusp structure in Lambda(+)(c)-> pK(-)pi(+) enhanced by triangle singularity".PHYSICAL REVIEW D 100.5(2019):6.

入库方式： OAI收割

来源：近代物理研究所

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