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题名: Decay widths of the spin-2 partners of the X(3872)
作者: Albaladejo, M;  Guo, FK;  Hidalgo-Duque, C;  Nieves, J;  Valderrama, MP
刊名: EUROPEAN PHYSICAL JOURNAL C
出版日期: 2015
卷号: 75, 期号:11, 页码:547
学科分类: Physics
DOI: http://dx.doi.org/10.1140/epjc/s10052-015-3753-6
通讯作者: Albaladejo, M (reprint author), Univ Valencia, Inst Invest Paterna, Ctr Mixto CSIC, Inst Fis Corpuscular IFIC, Aptd 22085, Valencia 46071, Spain.
文章类型: Article
英文摘要: We consider the X(3872) resonance as a J(PC) = 1(++) D (D) over bar* hadronic molecule. According to heavy quark spin symmetry, there will exist a partner with quantum numbers 2(++), X-2, which would be a D*(D) over bar* loosely bound state. The X-2 is expected to decay dominantly into D (D) over bar, D (D) over bar* and (D) over barD* in d-wave. In this work, we calculate the decay widths of the X-2 resonance into the above channels, as well as those of its bottom partner, X-b2, the mass of which comes from assuming heavy flavor symmetry for the contact terms. We find partial widths of the X-2 and X-b2 of the order of a few MeV. Finally, we also study the radiative X-2 -> D (D) over bar*gamma. and X-b2 -> (B) over bar B*gamma decays. These decay modes are more sensitive to the long-distance structure of the resonances and to the D (D) over bar* or B (B) over bar* final state interaction.
类目[WOS]: Physics, Particles & Fields
关键词[WOS]: QCD SUM-RULES ;  HEAVY-QUARK ;  MOLECULES ;  STATES ;  CHARMONIUM ;  LATTICE ;  MODEL
收录类别: SCI
项目资助者: JAE-CSIC Program ;  Spanish Government through the Ministerio de Economia y Competitividad [27-13-463B-731] ;  DFG ;  NSFC (NSFC) [11261130311] ;  NSFC [11165005] ;  Spanish Ministerio de Economia y Competitividad ;  European FEDER funds [FIS2011-28853-C02-02] ;  Spanish Consolider-Ingenio Programme CPAN [CSD2007-00042] ;  Generalitat Valenciana [PROMETEOII/2014/0068] ;  EU [283286]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/20785
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Albaladejo, M,Guo, FK,Hidalgo-Duque, C,et al. Decay widths of the spin-2 partners of the X(3872)[J]. EUROPEAN PHYSICAL JOURNAL C,2015,75(11):547.
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