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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.
2000
发表期刊PHYSICAL REVIEW D
ISSN0556-2821
卷号61期号:5页码:-
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.
部门归属Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China; Korea Inst Adv Study, Seoul 130012, South Korea
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
学科领域Physics
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收录类别SCI
WOS记录号WOS:000085685600018
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被引频次:7[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/311006/13011
专题理论物理所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.
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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):-.
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