Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule

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	Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule
	Huang, CS; Liu, C; Zhu, SL; Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
刊名	PHYSICAL REVIEW D
	2000
卷号	61 期号:5 页码:-
关键词	Heavy Flavor Decays B-meson Lifetimes To-leading Order Semileptonic Decay 4-quark Operators Gluon Condensate Form-factors Weak Decays Alpha(s) Beauty
ISSN号	0556-2821
英文摘要	The Lambda(b) matrix element of the four-quark operator relevant to its lifetime is reanalyzed by the QCD sum rule method. The new ingredients introduced are that (1) more vacuum condensates are considered, (2) a different quark-hadron duality is adopted, and (3) the possible deviation from the vacuum saturation assumption for the four quark condensates is considered. With kappa(1) = 4 the related hadronic parameter r is calculated to be (3.6 +/- 0.9), and the lifetime ratio tau(Lambda(b))/tau(B-0) = (0.83 +/- 0.04), which is consistent with experimental data.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000085685600018
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/13011]
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	Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Huang, CS,Liu, C,Zhu, SL,et al. Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule[J]. PHYSICAL REVIEW D,2000,61(5):-.
APA	Huang, CS,Liu, C,Zhu, SL,&Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2000).Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule.PHYSICAL REVIEW D,61(5),-.
MLA	Huang, CS,et al."Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule".PHYSICAL REVIEW D 61.5(2000):-.