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题名: Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function
作者: Huang, MQ ;  Jin, HY ;  Korner, JG ;  Liu, C
刊名: PHYSICS LETTERS B
出版日期: 2005
卷号: 629, 期号:1, 页码:27-32
关键词: QUARK EFFECTIVE THEORY ;  QCD SUM-RULES ;  WEAK FORM-FACTORS ;  HEAVY-QUARK ;  SEMILEPTONIC DECAY ;  RESONANCE PHYSICS ;  TRANSITIONS ;  CURRENTS ;  LIMIT
学科分类: Physics
通讯作者: Huang, MQ , Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China.
部门归属: Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China; Zhejiang Univ, Inst Modern Phys, Hangzhou 310027, Peoples R China; Univ Mainz, Inst Phys, D-55099 Mainz, Germany; Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: Using the framework of the Heavy Quark Effective Theory we have re-analyzed the Isgur-Wise function describing semi-leptonic Lambda(b) -> Lambda(c) decays in the QCD sum rule approach. The slope parameter of the Isgur-Wise function is found to be rho(2) = 1.35 +/- 0.13, which is consistent with an experimental measurement and a lattice calculation. To O(1/m(b,) 1/m(c)) of the heavy quark expansion the integrated Ab decay width is used to extract the CKM matrix element V-cb for which we obtain a value of /V-cb/ = 0.041 +/- 0.004 +/- 0.001 in excellent agreement with the value of /V-cb/ determined from semileptonic B -> D* decays. (c) 2005 Elsevier B.V. All rights reserved.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000232958000004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/13718
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:
Huang, MQ,Jin, HY,Korner, JG,et al. Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function[J]. PHYSICS LETTERS B,2005,629(1):27-32.
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