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Decay Upsilon(3S) -> Upsilon(1S)pi(+)pi(-) and a possible b(b)over-barq(q)over-bar state
Guo FK(郭奉坤); Shen PN(沈彭年); Jiang HQ(姜焕清); Ping RG(平荣刚); Guo, FK; Shen, PN; Jiang, HQ; Ping, RG
2005
发表期刊HIGH ENERGY PHYSICS AND NUCLEAR PHYSICS-CHINESE EDITION
卷号29期号:12页码:1121-1124
通讯作者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
文章类型Article
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.
关键词chiral unitary theory Upsilon decay pi pi S wave final state interaction tetraquark state
学科领域Physics
研究领域[WOS]Physics ; Physics
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语种英语
研究领域[WOS]Physics ; Physics
WOS类目Physics, Nuclear ; Physics, Particles & Fields
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.ihep.ac.cn/handle/311005/239083
专题理论物理室
实验物理中心
作者单位中国科学院高能物理研究所
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GB/T 7714
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 郭奉坤.,沈彭年.,姜焕清.,平荣刚.,Guo, FK.,...&Ping, RG.(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 郭奉坤,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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