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A QCD-analysis for radiative decays of Epsilon into f(2)(1270)
Ma, JP; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2001
发表期刊NUCLEAR PHYSICS B
ISSN0550-3213
卷号605期号:40911页码:625-643
摘要We perform a QCD analysis for the radiative decay of a heavy S-3(1) quarkonium into the tensor meson f(2)(1270). We make an attempt to separate the nonperturbative effect related to the quarkonium and that related to the tensor meson. the former is represented by NRQCD matrix elements, while the later is parameterized by distribution amplitudes of gluons in the tensor meson at twist-2 level and at twist-3 level. We find that at twist-2 level the helicity. of the tensor meson can be 0 and 2 and the amplitude with lambda = 2 is suppressed. At twist-3 level the tensor meson can have lambda = 1. A comparison with experiment is made, an agreement of our results with experiment can be found. We also briefly discuss the radiative decay into eta and obtain a prediction for Y --> gamma + eta. (C) 2001 Elsevier Science B.V. All rights reserved.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Factorization Mesons
学科领域Physics
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收录类别SCI
WOS记录号WOS:000170100600025
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被引频次:20[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/311006/12709
专题理论物理所1978-2010年知识产出
通讯作者Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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Ma, JP,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. A QCD-analysis for radiative decays of Epsilon into f(2)(1270)[J]. NUCLEAR PHYSICS B,2001,605(40911):625-643.
APA Ma, JP,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2001).A QCD-analysis for radiative decays of Epsilon into f(2)(1270).NUCLEAR PHYSICS B,605(40911),625-643.
MLA Ma, JP,et al."A QCD-analysis for radiative decays of Epsilon into f(2)(1270)".NUCLEAR PHYSICS B 605.40911(2001):625-643.
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