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题名: Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state
作者: Guo, FK ;  Shen, PN ;  Jiang, HQ ;  Ping, RG
刊名: HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
出版日期: 2005
卷号: 29, 期号:12, 页码:1121-1124
关键词: EXCITED HEAVY QUARKONIA ;  PI-PI-SPECTRUM ;  S-WAVE ;  HADRONIC TRANSITIONS ;  CHIRAL-SYMMETRY ;  GAMMA(3S)
学科分类: Physics
通讯作者: Guo, FK , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
部门归属: Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China; CCAST, World Lab, Beijing 100080, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Natl Lab Heavy Ion Accelerator, Ctr Theoret Nucl Phys, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China; SW China Normal Univ, Chongqing 400715, Peoples R China
英文摘要: The decay process Y(3S) -> Y(1S)pi(+)pi(-) are re-visited using a Chiral Unitary Theory (ChUT) to include the important pi pi S wave final state interaction (FSI). It is found that when an additional intermediate state with J(P) = 1(+) and I = 1 is introduced, the pi pi invariant mass spectrum and the cos theta(pi)* distribution in the Y(3S) -> Y(1S)pi(+)pi(-) process can simultaneously be well-explained, and a good description for other bottomonium pi(+)pi(-) transitions can be obtained consistently. As a result, the mass and the width of the intermediate state are predicted to be M-X = 10.08GeV and T-X = 0.655GeV, respectively. From the quark content analysis, this state should be a b (b) over barq (q) over bar state.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000233766000001
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13707
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Guo, FK,Shen, PN,Jiang, HQ,et al. Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state[J]. HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,2005,29(12):1121-1124.
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