The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay

doi:10.1140/epjc/s10052-016-4342-z

	The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay
	Xie, Ju-Jun 1,4; Geng, Li-Sheng 2,3,4
刊名	EUROPEAN PHYSICAL JOURNAL C
	2016-09-10
卷号	76 页码:7
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-016-4342-z
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.
资助项目	National Natural Science Foundation of China[11475227] ; National Natural Science Foundation of China[11375024] ; National Natural Science Foundation of China[11522539] ; National Natural Science Foundation of China[11505158] ; National Natural Science Foundation of China[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]
WOS关键词	CHIRAL DYNAMICS ; SCALAR MESONS ; F(0)(980) ; SYMMETRY ; J/PSI ; SIGMA
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000389594200001
资助机构	National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; Open Project Program of State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, China
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/43826]
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.Beihang Univ, Sch Phys & Nucl Energy Engn, Beijing 100191, Peoples R China 3.Beihang Univ, Int Res Ctr Nuclei & Particles Cosmos, Beijing 100191, Peoples R China 4.Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Xie, Ju-Jun,Geng, Li-Sheng. The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay[J]. EUROPEAN PHYSICAL JOURNAL C,2016,76:7.
APA	Xie, Ju-Jun,&Geng, Li-Sheng.(2016).The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay.EUROPEAN PHYSICAL JOURNAL C,76,7.
MLA	Xie, Ju-Jun,et al."The a(0)(980) and Lambda(1670) in the Lambda(+)(c) -> pi(+)eta Lambda decay".EUROPEAN PHYSICAL JOURNAL C 76(2016):7.