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Heavy quarkonium pi(+)pi(-) transitions and a possible b(b)over-barq(q)over-bar state
Guo, FK; Shen, PN; Chiang, HC; Ping, RG; Guo, FK , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.
2005
发表期刊NUCLEAR PHYSICS A
ISSN0375-9474
卷号761期号:40972页码:269-282
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.
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
关键词Pi-pi-spectrum Hadronic Transitions Chiral Dynamics Scalar Mesons S-wave Decay Gamma(3s) Symmetry
学科领域Physics
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收录类别SCI
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13720
专题理论物理所SCI论文
通讯作者Guo, FK , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China.
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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.
APA Guo, FK,Shen, PN,Chiang, HC,Ping, RG,&Guo, FK , Chinese Acad Sci, Inst High Energy Phys, POB 918 4, Beijing 100049, Peoples R China..(2005).Heavy quarkonium pi(+)pi(-) transitions and a possible b(b)over-barq(q)over-bar state.NUCLEAR PHYSICS A,761(40972),269-282.
MLA Guo, FK,et al."Heavy quarkonium pi(+)pi(-) transitions and a possible b(b)over-barq(q)over-bar state".NUCLEAR PHYSICS A 761.40972(2005):269-282.
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