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题名: A more precise extraction of |V-cb| in HQEFT of QCD
作者: Wang, WY ;  Wu, YL ;  Yan, YA ;  Zhong, M ;  Zuo, YB
刊名: MODERN PHYSICS LETTERS A
出版日期: 2004
卷号: 19, 期号:18, 页码:1379-1390
关键词: EFFECTIVE-FIELD-THEORY ;  HEAVY-QUARK ;  FORM-FACTORS ;  INCLUSIVE DECAYS ;  B->C TRANSITIONS ;  SUM-RULES ;  HADRONS ;  MESONS
学科分类: Physics
通讯作者: Wang, WY , Acad Sinica, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Acad Sinica, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: The more precise extraction for the CKM matrix element \V-cb\ in the heavy quark effective field theory (HQEFT) of QCD is studied from both exclusive and inclusive semileptonic B decays. The values of relevant nonperturbative parameters up to order 1/m(Q)(2) are estimated consistently in HQEFT of QCD. Using the most recent experimental data for B decay rates, \V-cb\ is updated to be \V-cb\ = 0.0395 +/- 0.0011(expt +/-) 0.0019(theor) from B --> D*lv decay and \V-cb\ = 0.0434 +/- 0.0041(expt) +/- 0.0020(theor) from B --> Dlv decay as well as \V-cb\ = 0.0394 +/- 0.0010(expt) +/- 0.0014(theor) from inclusive B --> X(c)lv decay.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000222103500005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/14061
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Wang, WY,Wu, YL,Yan, YA,et al. A more precise extraction of |V-cb| in HQEFT of QCD[J]. MODERN PHYSICS LETTERS A,2004,19(18):1379-1390.
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