Resummation of QCD corrections to the eta(c) decay rate

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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.
刊名	PHYSICAL REVIEW D
	2001
卷号	64 期号:11 页码:-
关键词	Quantum Chromodynamics Quarkonium Annihilation Renormalons Ambiguities
ISSN号	0556-2821
英文摘要	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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000172450600035
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13638]
专题	理论物理研究所_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.
推荐引用方式 GB/T 7714	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):-.