Hunting for the heavy quark spin symmetry partner of Z(cs)

doi:10.1140/epjc/s10052-022-10055-z

	Hunting for the heavy quark spin symmetry partner of Z(cs)
	Cao, Xu 1,2; Yang, Zhi 3
刊名	EUROPEAN PHYSICAL JOURNAL C
	2022-02-01
卷号	82 期号:2 页码:7
ISSN号	1434-6044
DOI	10.1140/epjc/s10052-022-10055-z
通讯作者	Yang, Zhi(zhiyang@uestc.edu.cn)
英文摘要	The discovery of a charged strange hidden-charm state Z(cs)(3985) implies another higher Z(cs)* state coupling to D-s-D(0) + c.c under the heavy quark spin symmetry. In this paper we discuss a possible hunt for it with data taken at existing facilities. We point out a hint for Z(cs)* in the data of (B) over bar J/psi K-K+ at LHCb, though weak, in line with the production mechanism of pentaquark P-c. We also study the triangular singularity which would possibly enhance the production of Z(cs)* in electron-positron collision. Surprisingly, the production rate of Z(cs)* is expected to be maximum at the e(+)e(-) center of mass energy of 4.648 GeV, which is lower than 4.681 GeV for Z(cs) due to the inverted coupling hierarchy of D-s1(D) over bar *K and D-s2(D) over barK in the triangle diagrams. Their bottom analogue under heavy quark flavor symmetry is also discussed. Our theoretical analysis would confront with future experiment of LHCb, BESIII, and Bell II.
资助项目	National Natural Science Foundation of China[12075289] ; National Natural Science Foundation of China[11847301] ; National Natural Science Foundation of China[U2032109] ; Strategic Priority Research Program of Chinese Academy of Sciences[XDB34030301] ; Fundamental Research Funds for the Central Universities[2019CDJDWL0005]
WOS关键词	STRANGE HIDDEN-CHARM ; MASS-SPECTRUM ; TETRAQUARKS ; MOLECULE
WOS研究方向	Physics
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000758828300001
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/141957]
专题	中国科学院近代物理研究所
通讯作者	Yang, Zhi
作者单位	1.Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Univ Elect Sci & Technol China, Sch Phys, Chengdu 610054, Peoples R China
推荐引用方式 GB/T 7714	Cao, Xu,Yang, Zhi. Hunting for the heavy quark spin symmetry partner of Z(cs)[J]. EUROPEAN PHYSICAL JOURNAL C,2022,82(2):7.
APA	Cao, Xu,&Yang, Zhi.(2022).Hunting for the heavy quark spin symmetry partner of Z(cs).EUROPEAN PHYSICAL JOURNAL C,82(2),7.
MLA	Cao, Xu,et al."Hunting for the heavy quark spin symmetry partner of Z(cs)".EUROPEAN PHYSICAL JOURNAL C 82.2(2022):7.