Large component QCD and theoretical framework of heavy quark effective field theory
文献类型：期刊论文
| 作者 | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Wu, Yue-Liang
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| 刊名 | INTERNATIONAL JOURNAL OF MODERN PHYSICS A
 |
| 出版日期 | 2006 |
| 卷号 | 21期号:28-29页码:5743-5792 |
| 关键词 | Cb-vertical-bar Bottom Hadron Decays V-ub Form-factors Matrix-elements Hqeft Mesons Renormalization Transitions Constants |
| ISSN号 | 0217-751X |
| 英文摘要 | Based on a large component QCD derived directly from full QCD by integrating over the small components of quark fields with vertical bar p vertical bar < E + m(Q), an alternative quantization procedure is adopted to establish a basic theoretical framework of heavy quark effective field theory (HQEFT) in the sense of effective quantum field theory. The procedure concerns quantum generators of Poincare group, Hilbert and Fock space, anticommutations and velocity superselection rule, propagator and Feynman rules, finite mass corrections, trivialization of gluon couplings and renormalization of Wilson loop. The Lorentz invariance and discrete symmetries in HQEFT are explicitly illustrated. Some new symmetries in the infinite mass limit are discussed. Weak transition matrix elements and masses of hadrons in HQEFT are well defined to display a manifest spin-flavor symmetry and 1/m(Q) corrections. A simple trace formulation approach is explicitly demonstrated by using LSZ reduction formula in HQEFT, and shown to be very useful for parametrizing the transition form factors via 1/m(Q) expansion. As the heavy quark and antiquark fields in HQEFT are treated on the same footing in a fully symmetric way, the quark-antiquark coupling terms naturally appear and play important roles for simplifying the structure of transition matrix elements, and for understanding the introduction of "dressed heavy quark"-hadron duality. In the case that the "longitudinal" and "transverse" residual momenta of heavy quark are at the same order of power counting, HQEFT provides a consistent approach for systematically analyzing heavy quark expansion in terms of 1/m(Q). Some interesting features in applications of HQEFT to heavy hadron systems are briefly outlined. |
| 学科主题 | Physics |
| URL标识 | 查看原文 |
| WOS记录号 | WOS:000243202400003 |
| 公开日期 | 2012-08-02 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/5854]  |
| 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 | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China,Wu, Yue-Liang. Large component QCD and theoretical framework of heavy quark effective field theory[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2006,21(28-29):5743-5792. |
| APA | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China,&Wu, Yue-Liang.(2006).Large component QCD and theoretical framework of heavy quark effective field theory.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,21(28-29),5743-5792. |
| MLA | Wu, YL , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China,et al."Large component QCD and theoretical framework of heavy quark effective field theory".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 21.28-29(2006):5743-5792. |
入库方式： OAI收割
来源：理论物理研究所
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