Hunting for exotic doubly hidden-charm/bottom tetraquark states

doi:10.1016/j.physletb.2017.08.034

	Hunting for exotic doubly hidden-charm/bottom tetraquark states
	Chen, Wei 1; Chen, Hua-Xing 2,3; Liu, Xiang 4,5,6; Steele, T. G.1; Zhu, Shi-Lin 7,8,9,10
刊名	PHYSICS LETTERS B
	2017-10-10
卷号	773 页码:247-251
关键词	Tetraquark states QCD sum rules Moment method
ISSN号	0370-2693
DOI	10.1016/j.physletb.2017.08.034
英文摘要	We develop a moment QCD sum rule method augmented by fundamental inequalities to study the existence of exotic doubly hidden-charm/bottom tetraquark states made of four heavy quarks. Using the compact diquark-antidiquark configuration, we calculate the mass spectra of these tetraquark states. There are 18 hidden-charm cc (c) over bar(c) over bar ctetraquark currents with J(PC) = 0(++), 0(-+), 0(--), 1(++), 1(+-), 1(-+), 1(--), and 2(++). We use them to perform QCD sum rule analyses, and the obtained masses are all higher than the spontaneous dissociation thresholds of two charmonium mesons, which are thus their dominant decay modes. The masses of the corresponding hidden-bottom bb (b) over bar(b) over bar tetraquarks are all below or very close to the thresholds of the (sic)(1S)(sic)(1S) and eta(b)(1S)eta(b)(1S), except one current of J(PC) = 0(++). Hence, we suggest to search for the doubly hidden-charm states in the J/psi J/psi and eta(c)(1S)eta(c)(1S) channels. (C) 2017 The Authors. Published by Elsevier B.V.
资助项目	Ministry of Education of China (SRFDP)[20120211110002]
WOS关键词	QCD SUM-RULES ; RESONANCE PHYSICS ; GLUON CONDENSATE ; QUARK MASS ; SYSTEMS ; CHARMONIUM ; POSITRONIUM ; ALPHA(S)
WOS研究方向	Astronomy & Astrophysics ; Physics
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000413294200038
内容类型	期刊论文
源URL	[http://119.78.100.186/handle/113462/56796]
专题	中国科学院近代物理研究所
通讯作者	Chen, Hua-Xing
作者单位	1.Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada 2.Beihang Univ, Sch Phys, Beijing 100191, Peoples R China 3.Beihang Univ, Beijing Key Lab Adv Nucl Mat & Phys, Beijing 100191, Peoples R China 4.Lanzhou Univ, Sch Phys Sci & Technol, Lanzhou 730000, Gansu, Peoples R China 5.Lanzhou Univ, Res Ctr Hadron & CSR Phys, Lanzhou 730000, Gansu, Peoples R China 6.Inst Modern Phys CAS, Lanzhou 730000, Gansu, Peoples R China 7.Peking Univ, Sch Phys, Beijing 100871, Peoples R China 8.Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China 9.Collaborat Innovat Ctr Quantum Matter, Beijing 100871, Peoples R China 10.Peking Univ, Ctr High Energy Phys, Beijing 100871, Peoples R China
推荐引用方式 GB/T 7714	Chen, Wei,Chen, Hua-Xing,Liu, Xiang,et al. Hunting for exotic doubly hidden-charm/bottom tetraquark states[J]. PHYSICS LETTERS B,2017,773:247-251.
APA	Chen, Wei,Chen, Hua-Xing,Liu, Xiang,Steele, T. G.,&Zhu, Shi-Lin.(2017).Hunting for exotic doubly hidden-charm/bottom tetraquark states.PHYSICS LETTERS B,773,247-251.
MLA	Chen, Wei,et al."Hunting for exotic doubly hidden-charm/bottom tetraquark states".PHYSICS LETTERS B 773(2017):247-251.