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Radiative decay of Upsilon into a scalar glueball
He, XG; Jin, HY; Ma, JP; He, XG , Zhejiang Univ, Inst Modern Phys, Zhejiang, Peoples R China.
2002
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号66期号:7页码:-
摘要We study the radiative decay of Y into a scalar glueball Y-->gammaG(s) using QCD factorization. We find that for this process the nonperturbative effects can be factorized into a matrix element well defined in nonrelativistic QCD (NRQCD) and the gluon distribution amplitude. The same NRQCD matrix element appears also in the leptonic decay of Y and therefore can be determined from data. In the asymptotic limit the gluon distribution amplitude is known up to a normalization constant. Using a QCD sum-rule calculation for the normalization constant, we obtain Br(Y-->gammaG(s)) to be in the range (1-2)x10(-3). We also discuss some of the implications for Y-->gammaf(i) decays. Near future data from CLEO-III can provide crucial information about scalar glueball properties.
部门归属Zhejiang Univ, Inst Modern Phys, Zhejiang, Peoples R China; Natl Taiwan Univ, Dept Phys, Taipei, Taiwan; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Qcd Sum-rules Lattices Physics Mass
学科领域Physics
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收录类别SCI
WOS记录号WOS:000179068200027
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/13427
专题理论物理所1978-2010年知识产出
通讯作者He, XG , Zhejiang Univ, Inst Modern Phys, Zhejiang, Peoples R China.
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GB/T 7714
He, XG,Jin, HY,Ma, JP,et al. Radiative decay of Upsilon into a scalar glueball[J]. PHYSICAL REVIEW D,2002,66(7):-.
APA He, XG,Jin, HY,Ma, JP,&He, XG , Zhejiang Univ, Inst Modern Phys, Zhejiang, Peoples R China..(2002).Radiative decay of Upsilon into a scalar glueball.PHYSICAL REVIEW D,66(7),-.
MLA He, XG,et al."Radiative decay of Upsilon into a scalar glueball".PHYSICAL REVIEW D 66.7(2002):-.
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