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Inclusive decays of bottom hadrons in new formulation of heavy quark effective field theory
Yan, YA; Wu, YL; Wang, WY; Yan, YA , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
2000
发表期刊INTERNATIONAL JOURNAL OF MODERN PHYSICS A
ISSN0217-751X
卷号15期号:17页码:2735-2770
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.
部门归属Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China
关键词b Meson Lifetimes Radiative-corrections Semileptonic Decays Qcd Corrections Flavor Decays Charm B->c(c)Over-bar-s Distributions Operators Expansion
学科领域Physics
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收录类别SCI
WOS记录号WOS:000088667900005
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被引频次:17[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/311006/12940
专题理论物理所SCI论文
通讯作者Yan, YA , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China.
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Yan, YA,Wu, YL,Wang, WY,et al. 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.
APA Yan, YA,Wu, YL,Wang, WY,&Yan, YA , Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China..(2000).Inclusive decays of bottom hadrons in new formulation of heavy quark effective field theory.INTERNATIONAL JOURNAL OF MODERN PHYSICS A,15(17),2735-2770.
MLA Yan, YA,et al."Inclusive decays of bottom hadrons in new formulation of heavy quark effective field theory".INTERNATIONAL JOURNAL OF MODERN PHYSICS A 15.17(2000):2735-2770.
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