Hunting for the X-b via hidden bottomonium decays

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	Hunting for the X-b via hidden bottomonium decays
	Li, G; Zhou, Z
刊名	PHYSICAL REVIEW D
	2015
卷号	91 期号:3 页码:34020
通讯作者	Li, G (reprint author), Qufu Normal Univ, Dept Phys, Qufu 273165, Peoples R China.
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.
学科主题	Astronomy & Astrophysics ; Physics
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
语种	英语
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/21084]
专题	理论物理研究所_理论物理所1978-2010年知识产出
推荐引用方式 GB/T 7714	Li, G,Zhou, Z. Hunting for the X-b via hidden bottomonium decays[J]. PHYSICAL REVIEW D,2015,91(3):34020.
APA	Li, G,&Zhou, Z.(2015).Hunting for the X-b via hidden bottomonium decays.PHYSICAL REVIEW D,91(3),34020.
MLA	Li, G,et al."Hunting for the X-b via hidden bottomonium decays".PHYSICAL REVIEW D 91.3(2015):34020.