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Coulomb gauge model for hidden charm tetraquarks
Xie W(谢伟); Xie, W; 王平(理);Mo, LQ; Wang, P; Cotanch, SR
2013
发表期刊PHYSICS LETTERS B
卷号725期号:1-3页码:148-152
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.
关键词Exotic mesons Hidden charm Tetraquarks QCD Coulomb gauge Effective Hamiltonian
学科领域Physics
DOI10.1016/j.physletb.2013.07.003
收录类别SCI
WOS记录号WOS:000322606800019
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被引频次:6[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/223874
专题理论物理室
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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.
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