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Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium
Zhang, AL; Steele, TG; Steele, TG , Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada.
2003
发表期刊NUCLEAR PHYSICS A
ISSN0375-9474
卷号728期号:40910页码:165-181
摘要Instanton effects and three-loop perturbative contributions are incorporated into QCD sum-rule analyses of pseudoscalar (J(PC) = 0(-+)) gluonium. Gaussian sum-rules are shown to be superior to Laplace sum-rules in optimized predictions for pseudoscalar gluonium states in the presence of instanton contributions. The Gaussian sum-rule analysis yields a pseudoscalar mass of (2.65 +/- 0.33) GeV and width bounded by Gamma < 530 MeV. The Laplace sum-rules provide corroborating evidence in support of the approximate to 2.7 GeV mass scale. (C) 2003 Elsevier B.V. All rights reserved.
部门归属Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Operator-product Expansion Heavy-quark Expansion Scalar Glueball Quantum Chromodynamics Hadronic Structure Resonance Physics Local Duality Bag Model Mass Mesons
学科领域Physics
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收录类别SCI
WOS记录号WOS:000186209700010
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文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14168
专题理论物理所1978-2010年知识产出
通讯作者Steele, TG , Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada.
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Zhang, AL,Steele, TG,Steele, TG , Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada.. Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium[J]. NUCLEAR PHYSICS A,2003,728(40910):165-181.
APA Zhang, AL,Steele, TG,&Steele, TG , Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada..(2003).Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium.NUCLEAR PHYSICS A,728(40910),165-181.
MLA Zhang, AL,et al."Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium".NUCLEAR PHYSICS A 728.40910(2003):165-181.
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