Coulomb gauge model for hidden charm tetraquarks

	Coulomb gauge model for hidden charm tetraquarks
	Xie W(谢伟); Xie, W; 王平(理);Mo, LQ; Wang, P; Cotanch, SR
刊名	PHYSICS LETTERS B
	2013
卷号	725 期号:1-3 页码:148-152
关键词	Exotic mesons Hidden charm Tetraquarks QCD Coulomb gauge Effective Hamiltonian
英文摘要	The spectrum of tetraquark states with hidden charm is studied within an effective Coulomb gauge Hamiltonian approach. Of the four independent color schemes, two are investigated, the (q (c) over bar)(1) (c (q) over bar)(1) singlet-singlet (molecule) and the (qc)(3)((q) over bar(c) over bar)(3) triplet-triplet (diquark), for selected J(PC) states using a variational method. The predicted masses of triplet-triplet tetraquarks are roughly a GeV heavier than the singlet-singlet states. There is also an interesting flavor dependence with (q (q) over bar)(1) (c (c) over bar (1)) states about half a GeV lighter than (q ((q) over bar)(1). The lightest 1(++) and 1(--) predictions are in agreement with the observed X(3872) and Y(4008) masses suggesting they are molecules with omega J/psi and eta h(c), rather than D(D) over bar and DD, type structure, respectively. Similarly, the lightest isovector 1(++) molecule, having a rho J /psi flavor composition, has mass near the recently observed charged Z(c) (3900) value. These flavor configurations are consistent with observed X, Y and Z(c) decays to pi pi J/psi. Crown Copyright (C) 2013 Published by Elsevier B.V. All rights reserved.
学科主题	Physics
收录类别	SCI
WOS记录号	WOS:000322606800019
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/223874]
专题	高能物理研究所_理论物理室
推荐引用方式 GB/T 7714	Xie W,Xie, W,Wang P,et al. Coulomb gauge model for hidden charm tetraquarks[J]. PHYSICS LETTERS B,2013,725(1-3):148-152.
APA	谢伟,Xie, W,王平,Wang, P,&Cotanch, SR.(2013).Coulomb gauge model for hidden charm tetraquarks.PHYSICS LETTERS B,725(1-3),148-152.
MLA	谢伟,et al."Coulomb gauge model for hidden charm tetraquarks".PHYSICS LETTERS B 725.1-3(2013):148-152.