Interference effect as resonance killer of newly observed charmoniumlike states Y (4320) and Y (4390)

doi:10.1140/epjc/s10052-018-5635-1

	Interference effect as resonance killer of newly observed charmoniumlike states Y (4320) and Y (4390)
	Chen, Dian-Yong 1; Liu, Xiang 2,3; Matsuki, Takayuki 4,5
刊名	EUROPEAN PHYSICAL JOURNAL C
	2018-02-17
卷号	78 期号:2 页码:136
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-018-5635-1
英文摘要	In this letter, we decode the newly observed char-moniumlike states, Y (4320) and Y (4390), by introducing interference effect between psi (4160) and psi (4415), which plays a role of resonance killer for Y (4320) and Y (4390). It means that two newly reported charmoniumlike states are not genuine resonances, according to which we can naturally explain why two well-established charmonia psi (4160) and psi (4415) are missing in the cross sections of e(+) e(-) -> pi(+)pi(-) J/psi and pi(+)pi(-) h(c) simultaneously. To well describe the detailed data of these cross sections around root s = 4.2 GeV, our study further illustrates that a charmoniumlike structure Y (4220) must be introduced. As a charmonium, Y (4220) should dominantly decay into its open-charm channel e(+) e(-) -> D-0 pi D+*(-), which provides an extra support to psi (4S) assignment to Y (4220). In fact, this interference effect introduced to explain Y (4320) and Y (4390) gives a typical example of non-resonant explanations to the observed XYZ states, which should be paid more attention especially before identifying the observed XYZ states as genuine resonances.
资助项目	National Natural Science Foundation of China[11222547] ; National Natural Science Foundation of China[11175073] ; National Natural Science Foundation of China[11775050] ; National Natural Science Foundation of China[11375240] ; Ministry of Education of China (the Fundamental Research Funds for the Central Universities) ; National Program for Top-notch Young Professionals
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000425395200003
资助机构	National Natural Science Foundation of China ; Ministry of Education of China (the Fundamental Research Funds for the Central Universities) ; National Program for Top-notch Young Professionals
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/47311]
专题	中国科学院近代物理研究所
通讯作者	Chen, Dian-Yong
作者单位	1.Southeast Univ, Sch Phys, Nanjing 210094, Jiangsu, Peoples R China 2.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 3.Lanzhou Univ, Inst Modern Phys CAS, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Gansu, Peoples R China 4.Tokyo Kasei Univ, Itabashi Ku, 1-18-1 Kaga, Tokyo 1738602, Japan 5.RIKEN, Theoret Res Div, Nishina Ctr, Wako, Saitama 3510198, Japan
推荐引用方式 GB/T 7714	Chen, Dian-Yong,Liu, Xiang,Matsuki, Takayuki. Interference effect as resonance killer of newly observed charmoniumlike states Y (4320) and Y (4390)[J]. EUROPEAN PHYSICAL JOURNAL C,2018,78(2):136.
APA	Chen, Dian-Yong,Liu, Xiang,&Matsuki, Takayuki.(2018).Interference effect as resonance killer of newly observed charmoniumlike states Y (4320) and Y (4390).EUROPEAN PHYSICAL JOURNAL C,78(2),136.
MLA	Chen, Dian-Yong,et al."Interference effect as resonance killer of newly observed charmoniumlike states Y (4320) and Y (4390)".EUROPEAN PHYSICAL JOURNAL C 78.2(2018):136.