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题名: Inclusive decays of bottom hadrons in new formulation of heavy quark effective field theory
作者: Yan, YA ;  Wu, YL ;  Wang, WY
刊名: INTERNATIONAL JOURNAL OF MODERN PHYSICS A
出版日期: 2000
卷号: 15, 期号:17, 页码:2735-2770
关键词: B MESON LIFETIMES ;  RADIATIVE-CORRECTIONS ;  SEMILEPTONIC DECAYS ;  QCD CORRECTIONS ;  FLAVOR DECAYS ;  CHARM ;  B->C(C)OVER-BAR-S ;  DISTRIBUTIONS ;  OPERATORS ;  EXPANSION
学科分类: Physics
通讯作者: Yan, YA , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
英文摘要: We apply the new formulation of heavy quark effective field theory (HQEFT) to the inclusive decays of bottom hadrons. The long-term ambiguity of using heavy quark mass or heavy hadron mass for inclusive decays is clarified within the framework of the new formulation of HQEFT. The 1/m(b) order corrections are absent and contributions from 1/m(b)(2) terms are calculated in detail. This enables us to reliably extract the important CKM matrix element \V-cb\ from the inclusive semileptonic decay rates. The resulting lifetime ratios tau(B-s(0))/tau(B-0) and tau(Lambda(b))/tau(B-0) are found to well agree with the experimental data. We also calculate in detail the inclusive semileptonic branching ratios and the ratios of the tau and beta decay rates as well as the charm countings in the B-0, B-s(0) and Lambda(b) systems. For B-0 decays, all the observables are found to be consistent with the experimental data. More precise data for the B-0 decays and further experimental measurements for the B-s(0) and Lambda(b) systems will be very useful for testing the framework of new formulation of HQEFT at the level of higher order collections.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000088667900005
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12940
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:
Yan, YA,Wu, YL,Wang, WY. Inclusive decays of bottom hadrons in new formulation of heavy quark effective field theory[J]. INTERNATIONAL JOURNAL OF MODERN PHYSICS A,2000,15(17):2735-2770.
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