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题名: Heavy quarkonium pi(+)pi(-) transitions and a possible b(b)over-barq(q)over-bar state
作者: Guo, FK ;  Shen, PN ;  Chiang, HC ;  Ping, RG
刊名: NUCLEAR PHYSICS A
出版日期: 2005
卷号: 761, 期号:40972, 页码:269-282
关键词: PI-PI-SPECTRUM ;  HADRONIC TRANSITIONS ;  CHIRAL DYNAMICS ;  SCALAR MESONS ;  S-WAVE ;  DECAY ;  GAMMA(3S) ;  SYMMETRY
学科分类: Physics
通讯作者: Guo, FK , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, 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; South West Normal Univ, Chongqing 400715, Peoples R China; Chinese Acad Sci, Inst Theoret Phys, Beijing 100864, Peoples R China; Ctr Theoret Nucl Phys, Natl Lab Heavy Ion Accelerator, Lanzhou 730000, Peoples R China; Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
英文摘要: pi(+)pi(-) transitions of heavy quarkonia, especially the Y(3S) -> Y(1S) pi(+)pi(-) decay process, are revisited. In the framework of the Chiral Unitary Theory (ChUT), the S wave pi pi final state interaction (FSI) is included. It is found that when an additional intermediate state with J(P) = 1(+) and I = 1 is introduced, not only 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, but also a consistent description for other bottomonia pi(+)pi(-) transitions can be obtained. As a consequence, the mass and the width of the intermediate state are predicted. From the quark content analysis, this state should be a bbqq state. (c) 2005 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13720
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,Chiang, HC,et al. Heavy quarkonium pi(+)pi(-) transitions and a possible b(b)over-barq(q)over-bar state[J]. NUCLEAR PHYSICS A,2005,761(40972):269-282.
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