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Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state
Guo, FK; Shen, PN; Jiang, HQ; Ping, RG; Guo, FK , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
2005
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
ISSN0254-3052
卷号29期号:12页码:1121-1124
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.
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
关键词Excited Heavy Quarkonia Pi-pi-spectrum S-wave Hadronic Transitions Chiral-symmetry Gamma(3s)
学科领域Physics
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收录类别SCI
WOS记录号WOS:000233766000001
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13707
专题理论物理所SCI论文
通讯作者Guo, FK , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China.
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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.
APA Guo, FK,Shen, PN,Jiang, HQ,Ping, RG,&Guo, FK , Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China..(2005).Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state.HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION,29(12),1121-1124.
MLA Guo, FK,et al."Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state".HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION 29.12(2005):1121-1124.
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