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题名: Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium
作者: Zhang, AL ;  Steele, TG
刊名: NUCLEAR PHYSICS A
出版日期: 2003
卷号: 728, 期号:40910, 页码:165-181
关键词: OPERATOR-PRODUCT EXPANSION ;  HEAVY-QUARK EXPANSION ;  SCALAR GLUEBALL ;  QUANTUM CHROMODYNAMICS ;  HADRONIC STRUCTURE ;  RESONANCE PHYSICS ;  LOCAL DUALITY ;  BAG MODEL ;  MASS ;  MESONS
学科分类: Physics
通讯作者: Steele, TG , Univ Saskatchewan, Dept Phys & Engn Phys, Saskatoon, SK S7N 5E2, Canada.
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
英文摘要: 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.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000186209700010
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内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14168
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:
Zhang, AL,Steele, TG. Instanton and higher-loop perturbative contributions to the QCD sum-rule analysis of pseudoscalar gluonium[J]. NUCLEAR PHYSICS A,2003,728(40910):165-181.
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