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题名: Remarks on the P-c structures and triangle singularities
作者: Guo, FK ;  Meissner, UG ;  Nieves, J ;  Yang, Z
刊名: EUROPEAN PHYSICAL JOURNAL A
出版日期: 2016
卷号: 52, 期号:10, 页码:318
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epja/i2016-16318-4
通讯作者: Guo, FK (reprint author), Chinese Acad Sci, Inst Theoret Phys, Key Lab Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: It was proposed that the narrow P-c(4450) structure observed by the LHCb Collaboration in the reaction Lambda(b) -> J/psi pK might be due to a triangle singularity around the chi(c1)-proton threshold at 4.45 GeV. We discuss the occurrence of a similar triangle singularity in the J/psi p invariant mass distribution for the decay Lambda(b) -> J/psi p pi, which could explain the bump around 4.45 GeV in the data. More precise measurements of this process would provide valuable information towards an understanding of the P-c structures.
类目[WOS]: Physics, Nuclear ;  Physics, Particles & Fields
关键词[WOS]: PENTAQUARK CANDIDATES ;  DIQUARK MODEL ;  STATES ;  RESONANCES ;  BARYONS
收录类别: SCI
项目资助者: DFG ;  NSFC [11621131001] ;  Thousand Talents Plan for Young Professionals ;  Chinese Academy of Sciences (CAS) [QYZDB-SSW-SYS013] ;  CAS President's International Fellowship Initiative (PIFI) [2015VMA076] ;  Spanish Ministerio de Economia y Competitividad ;  European FEDER funds [FIS2014-51948-C2-1-P, FIS2014-57026-REDT, SEV-2014-0398] ;  Generalitat Valenciana [PROME-TEOII/2014/0068]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21502
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Recommended Citation:
Guo, FK,Meissner, UG,Nieves, J,et al. Remarks on the P-c structures and triangle singularities[J]. EUROPEAN PHYSICAL JOURNAL A,2016,52(10):318.
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