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NRQCD factorization for twist-2 light-cone wave-functions of charmonia
Ma, J. P.; Si, Z. G.; Si, ZG , Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China
2007
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号647期号:41035页码:419-426
摘要We show that the twist-2 light-cone wave-functions of eta(c) and J/psi can be factorized with nonrelativistic QCD (NRQCD) at the one-loop level, where the nonperturbative effects are represented by NRQCD matrix elements. In quarkonium at rest the c- or (c) over bar -quark moves with a small velocity v. The factorization is achieved by expanding the small velocity v. To the leading order of v, the twist-2 light-cone wave-functions of eta(c) and J/psi can be factorized as the product of a perturbative function and an NRQCD matrix element. The perturbative function is calculated at the one-loop level and is free from any soft divergences. Our results can be used for exclusive productions of quarkonia, which are studied in an experiment with two B-factories. (c) 2007 Elsevier B.V. All rights reserved.
部门归属Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Heavy Quarkonium Distribution Amplitudes Gluon Fragmentation Exclusive Processes Quantum Chromodynamics Asymptotic-behavior Vector-mesons Qcd Distributions
学科领域Physics
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收录类别SCI
WOS记录号WOS:000246332800018
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被引频次:33[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/311006/5751
专题理论物理所1978-2010年知识产出
通讯作者Si, ZG , Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China
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Ma, J. P.,Si, Z. G.,Si, ZG , Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China. NRQCD factorization for twist-2 light-cone wave-functions of charmonia[J]. PHYSICS LETTERS B,2007,647(41035):419-426.
APA Ma, J. P.,Si, Z. G.,&Si, ZG , Shandong Univ, Dept Phys, Jinan 250100, Shandong, Peoples R China.(2007).NRQCD factorization for twist-2 light-cone wave-functions of charmonia.PHYSICS LETTERS B,647(41035),419-426.
MLA Ma, J. P.,et al."NRQCD factorization for twist-2 light-cone wave-functions of charmonia".PHYSICS LETTERS B 647.41035(2007):419-426.
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