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Resummation of QCD corrections to the eta(c) decay rate
Bodwin, GT; Chen, YQ; Bodwin, GT , Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
2001
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号64期号:11页码:-
摘要We examine the ratio of the decay rate of the eta, into light hadrons to the decay rate into photons and find that most of the large next-to-leading-order (NLO) correction is associated with running of the strong coupling alpha We resum Such contributions by analyzing final-state chains of vacuum-polarization bubbles. We show that the nonperturbative parts of the bubble chains can be absorbed into a color-octet matrix element, once one has used contour deformations, of the phase-space integrals to cancel certain contributions. We argue that these contributions are incompatible with the uncertainty principle, We also argue that perturbation theory is reliable only if one carries out the phase-space integrations before the perturbation summation. Our results are in good agreement with experiment and differ considerably from those that one obtains by applying the scale-setting method of Brodsky. Lepage. and Mackenzie to the NLO result.
部门归属Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA; Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词Quantum Chromodynamics Quarkonium Annihilation Renormalons Ambiguities
学科领域Physics
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收录类别SCI
WOS记录号WOS:000172450600035
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被引频次:8[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/311006/13638
专题理论物理所1978-2010年知识产出
通讯作者Bodwin, GT , Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.
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Bodwin, GT,Chen, YQ,Bodwin, GT , Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA.. Resummation of QCD corrections to the eta(c) decay rate[J]. PHYSICAL REVIEW D,2001,64(11):-.
APA Bodwin, GT,Chen, YQ,&Bodwin, GT , Argonne Natl Lab, Div High Energy Phys, Argonne, IL 60439 USA..(2001).Resummation of QCD corrections to the eta(c) decay rate.PHYSICAL REVIEW D,64(11),-.
MLA Bodwin, GT,et al."Resummation of QCD corrections to the eta(c) decay rate".PHYSICAL REVIEW D 64.11(2001):-.
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