Note on the slope parameter of the baryonic Lambda(b) -> Lambda(c) Isgur-Wise function
文献类型:期刊论文
作者 | Huang, MQ; Jin, HY; Korner, JG; Liu, C![]() |
刊名 | PHYSICS LETTERS B
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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 |
ISSN号 | 0370-2693 |
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. |
学科主题 | Physics |
URL标识 | 查看原文 |
WOS记录号 | WOS:000232958000004 |
公开日期 | 2012-08-29 |
源URL | [http://ir.itp.ac.cn/handle/311006/13718] ![]() |
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, MQ , Natl Univ Def Technol, Dept Phys, Changsha 410073, Peoples R China. |
推荐引用方式 GB/T 7714 | 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. |
入库方式: OAI收割
来源:理论物理研究所
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