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题名: The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay
作者: Xie, JJ ;  Geng, LS
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2016
卷号: 76, 期号:9, 页码:496
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-016-4342-z
通讯作者: Geng, LS (reprint author), Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China. ;  Geng, LS (reprint author), Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China. ;  Geng, LS (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
文章类型: Article
英文摘要: We propose to study the a(0)(980) and the Lambda(1670) resonances in the Lambda(+)(c) -> pi(+)eta Lambda decay via the final-state interactions of the pi(+)eta and eta Lambda pairs. The weak interaction part proceeds through the c quark decay process: c(ud) -> (s + u + (d) over bar)(ud), while the hadronization part takes place in two mechanisms, differing in how the quarks from the weak decay combines into pi(+)eta Lambda with a q (q) over bar with the quantum numbers of the vacuum. Because the final pi(+)eta and eta Lambda states are in pure isospin I = 1 and I = 0 combinations, the Lambda(+)(c) -> pi(+)eta Lambda decay can be an ideal process to study the a(0)(980) and Lambda(1670) resonances. Describing the final-state interaction in the chiral unitary approach, we find that the pi(+)eta and invariant mass distributions, up to an arbitrary normalization, show clear cusp and peak structures, which can be associated with the a(0)(980) and Lambda(1670) resonances, respectively. The proposed mechanism can provide valuable information on the nature of these resonances and can in principle be tested by facilities such as BEPCII.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: CHIRAL DYNAMICS ;  SCALAR MESONS ;  F(0)(980) ;  SYMMETRY ;  J/PSI ;  SIGMA
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11475227, 11375024, 11522539, 11505158, 11475015] ;  Youth Innovation Promotion Association CAS [2016367] ;  Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China [Y5KF151CJ1]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21533
Appears in Collections:理论物理所2016年知识产出_期刊论文

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Xie, JJ,Geng, LS. The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76(9):496.
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