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题名: Hunting for the X-b via hidden bottomonium decays
作者: Li, G;  Zhou, Z
刊名: PHYSICAL REVIEW D
出版日期: 2015
卷号: 91, 期号:3, 页码:34020
学科分类: Astronomy & Astrophysics ;  Physics
DOI: http://dx.doi.org/10.1103/PhysRevD.91.034020
通讯作者: Li, G (reprint author), Qufu Normal Univ, Dept Phys, Qufu 273165, Peoples R China.
文章类型: Article
英文摘要: In this work, we study the isospin conserved hidden bottomonium decay of X-b -> Upsilon(1S)omega, where X-b is taken to be the counterpart of the famous X(3872) in the bottomonium sector as a candidate for the meson-meson molecule. Since it is likely that the X-b is below the B (B) over bar* threshold and the mass difference between the neutral and charged bottom meson is small compared to the binding energy of the X-b, the isospin violating decay mode Xb -> Upsilon(nS)pi(+)pi(-) would be greatly suppressed. We use the effective Lagrangian based on the heavy quark symmetry to explore the rescattering mechanism of X-b -> Upsilon(1S)omega and calculate the partial widths. Our results show that the partial width for the X-b -> Upsilon(1S)omega is about tens of keVs. Taking into account the fact that the total width of X-b may be smaller than a few MeV like X(3872), the calculated branching ratios may reach to orders of 10(-2). These hidden bottomonium decay modes are of great importance in the experimental search for the X-b particularly at the hadron collider. Also, the associated studies of hidden bottomonium decays X-b -> Upsilon(nS)gamma, Upsilon(nS)omega, and B (B) over bar gamma may help us investigate the structure of X-b deeply. The experimental observation of X-b will provide us with further insight into the spectroscopy of exotic states and is helpful to probe the structure of the states connected by the heavy quark symmetry.
类目[WOS]: Astronomy & Astrophysics ;  Physics, Particles & Fields
关键词[WOS]: CHARMONIUM ;  STATE ;  TRANSITIONS ;  QUARKONIA ;  DEUTERON ;  X(3872) ;  MESONS ;  RULE
收录类别: SCI
项目资助者: National Natural Science Foundation of China [11275113]
语种: 英语
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/21084
Appears in Collections:理论物理所2015年知识产出_期刊论文

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Recommended Citation:
Li, G,Zhou, Z. Hunting for the X-b via hidden bottomonium decays[J]. PHYSICAL REVIEW D,2015,91(3):34020.
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