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Predictions for e(+)e(-) -> J/psi eta(c) with light-cone wave functions
Ma, JP; Si, ZG; Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
2004
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号70期号:7页码:-
摘要Predictions for e(+)e(-)-->J/psieta(c) from previous studies are made by taking charmonia as a nonrelativistic bound state and by using nonrelativistic QCD (NRQCD) approach. The predicted cross section is smaller by an order of magnitude than the experimentally observed cross section. We study the process by taking charm quark as a light quark and use light-cone wave functions to parameterize nonperturbative effects related to charmonia. The total cross section of e(+)e(-)-->J/psieta(c) can be predicted, if these wave functions are known. Motivated by studies of light-cone wave functions of light hadrons, we make a reasonable assumption of the forms of light-cone wave functions. With these light-cone wave functions we can obtain the cross section which is closer to the experimentally observed than that from the NRQCD approach. We also discuss in detail the difference between two approaches.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Shandong Univ, Dept Phys, Jinan 250100, Peoples R China
关键词Twist Distribution Amplitudes Exclusive Processes Quantum Chromodynamics Vector-mesons Asymptotic-behavior Qcd Factorization Form-factors B-meson Annihilation Decays
学科领域Physics
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收录类别SCI
WOS记录号WOS:000224799600032
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被引频次:67[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/311006/13994
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,Si, ZG,Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.. Predictions for e(+)e(-) -> J/psi eta(c) with light-cone wave functions[J]. PHYSICAL REVIEW D,2004,70(7):-.
APA Ma, JP,Si, ZG,&Ma, JP , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2004).Predictions for e(+)e(-) -> J/psi eta(c) with light-cone wave functions.PHYSICAL REVIEW D,70(7),-.
MLA Ma, JP,et al."Predictions for e(+)e(-) -> J/psi eta(c) with light-cone wave functions".PHYSICAL REVIEW D 70.7(2004):-.
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