Reanalysis of the four-quark operators relevant to the Lambda(b) lifetime from the QCD sum rule
文献类型：期刊论文
| 作者 | Huang, CS ; Liu, C; Zhu, SL; Huang, CS , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
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| 刊名 | PHYSICAL REVIEW D
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| 出版日期 | 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 |
| 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):-. |
入库方式： OAI收割
来源：理论物理研究所
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