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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)
Source PublicationNUCLEAR PHYSICS B
KeywordFactorization Mesons
AbstractWe 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.
2001
ISSN0550-3213
Volume605Issue:40911Pages:625-643
Subject AreaPhysics
Indexed BySCI
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Document Type期刊论文
Identifierhttp://ir.itp.ac.cn/handle/311006/12709
Collection理论物理所科研产出_SCI论文
Corresponding AuthorMa, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
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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