Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay

doi:10.1103/PhysRevD.93.094001

	Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay
	Wang, En 1; Chen, Hua-Xing 2,3; Geng, Li-Sheng 2,3,4; Li, De-Min 1; Oset, Eulogio 5,6,7
刊名	PHYSICAL REVIEW D
	2016-05-03
卷号	93 页码:10
ISSN号	2470-0010
DOI	10.1103/PhysRevD.93.094001
英文摘要	We study here the A(b)(0) -> J/psi p pi(-) reaction in analogy to the A(b)(0) -> J/psi pK(-) one, and we note that in both decays there is a sharp structure (dip or peak) in the J/psi p mass distribution around 4450 MeV, which is associated in the A(b)(0) -> J/psi pK(-) experiment to an exotic pentaquark baryonic state, although in J/psi p pi(-) it shows up with relatively low statistics. We analyze the A(b)(0) -> J/psi p pi(-) interaction along the same lines as the A(b)(0) -> J/psi pK(-) one, with the main difference stemming from the reduced Cabibbo strength in the former and the consideration of the pi(-)p final state interaction instead of the K(-)p one. We find that with a minimal input, introducing the pi(-)p and J/psi p interaction in S-wave with realistic interactions, and the empirical P-wave and D-wave contributions, one can accomplish a qualitative description of the pi(-)p and J/psi p mass distributions. More importantly, the peak structure followed by a dip of the experimental J/psi p mass distribution is reproduced with the same input as used to describe the data of A(b)(0) -> J/psi pK(-) reaction. The repercussion for the triangular singularity mechanism, invoked in some works to explain the pentaquark peak, is discussed.
资助项目	Chinese Academy of Science (CAS)[2013T2J] ; 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] ; Spanish Ministerio de Economia y Competitividad ; European FEDER funds[FIS2011-28853-C02-01] ; European FEDER funds[FIS2011-28853-C02-02] ; Generalitat Valenciana[Prometeo II-2014/068] ; China Postdoctoral Science Foundation[2015M582197] ; Postdoctoral Research Sponsorship in Henan Province[2015023] ; European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (acronym HadronPhysics3) under the Seventh Framework Programme of EU[283286]
WOS关键词	BARYON RESONANCES ; DIQUARK MODEL ; MESON ; P-C(4450)
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	AMER PHYSICAL SOC
WOS记录号	WOS:000375655000003
资助机构	Chinese Academy of Science (CAS) ; National Natural Science Foundation of China ; Spanish Ministerio de Economia y Competitividad ; European FEDER funds ; Generalitat Valenciana ; China Postdoctoral Science Foundation ; Postdoctoral Research Sponsorship in Henan Province ; European Community-Research Infrastructure Integrating Activity Study of Strongly Interacting Matter (acronym HadronPhysics3) under the Seventh Framework Programme of EU
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/42557]
专题	中国科学院近代物理研究所
通讯作者	Chen, Hua-Xing; Geng, Li-Sheng; Li, De-Min; Oset, Eulogio
作者单位	1.Zhengzhou Univ, Dept Phys, Zhengzhou 450001, Henan, 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, Inst Theoret Phys, State Key Lab Theoret Phys, Beijing 100190, Peoples R China 5.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 6.Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,Dept Fis Teor, Apartado 22085, Valencia 46071, Spain 7.Univ Valencia, Ctr Mixto, CSIC, Inst Invest Paterna,IFIC, Apartado 22085, Valencia 46071, Spain
推荐引用方式 GB/T 7714	Wang, En,Chen, Hua-Xing,Geng, Li-Sheng,et al. Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay[J]. PHYSICAL REVIEW D,2016,93:10.
APA	Wang, En,Chen, Hua-Xing,Geng, Li-Sheng,Li, De-Min,&Oset, Eulogio.(2016).Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay.PHYSICAL REVIEW D,93,10.
MLA	Wang, En,et al."Hidden-charm pentaquark state in Lambda(0)(b) -> J/psi p pi(-) decay".PHYSICAL REVIEW D 93(2016):10.