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Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function
Huang, MQ; Jin, HY; Korner, JG; Liu, C; Huang, MQ , Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China.
2005
发表期刊PHYSICS LETTERS B
ISSN0370-2693
卷号629期号:1页码:27-32
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.
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
关键词Quark Effective Theory Qcd Sum-rules Weak Form-factors Heavy-quark Semileptonic Decay Resonance Physics Transitions Currents Limit
学科领域Physics
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收录类别SCI
WOS记录号WOS:000232958000004
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被引频次:18[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/311006/13718
专题理论物理所1978-2010年知识产出
通讯作者Huang, MQ , Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China.
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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.
APA Huang, MQ,Jin, HY,Korner, JG,Liu, C,&Huang, MQ , Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China..(2005).Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function.PHYSICS LETTERS B,629(1),27-32.
MLA Huang, MQ,et al."Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function".PHYSICS LETTERS B 629.1(2005):27-32.
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