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A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations
ALEPH Collaboration
2000
发表期刊PHYSICS LETTERS B
卷号486期号:3-4页码:#REF!
通讯作者Barate, R (reprint author), CNRS, IN2P3, Phys Particules Lab, LAPP, F-74019 Annecy Le Vieux, France.
文章类型Article
摘要In a data sample of about four million hadronic Z decays recorded with the ALEPH detector from 1991 to 1995. the B-s(0) --> (Ds(*)+Ds()*()-) decay is observed, based on tagging the final state with two phi mesons in the same hemisphere. The D-s((*)+) D-s((*)-) final state is mostly CP even and corresponds to the short-lived B-s(0) mass eigenstate. The branching ratio of this decay is measured to be BR(B-s(0)(short) --> D-s((*)+) D-s((*)-)) = (23 +/- 10(-9)(+19))%. A measurement of the lifetime of the B-s(0)(short) gives 1.27 +/- 0.33 +/- 0.08 ps. The lifetime and branching ratio measurements provide two essentially independent methods of estimating the relative decay width difference Delta Gamma/Gamma in the B-s(0)-(B) over bar(s)(0) system, corresponding to an average value Delta Gamma/Gamma = (25+/-(21)(14))%. (C) 2000 Elsevier Science B.V. All rights reserved.
学科领域Physics
DOI10.1016/S0370-2693(00)00750-4
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:000088686800009
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被引频次:29[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/227420
专题实验物理中心
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ALEPH Collaboration. A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations[J]. PHYSICS LETTERS B,2000,486(3-4):#REF!.
APA ALEPH Collaboration.(2000).A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations.PHYSICS LETTERS B,486(3-4),#REF!.
MLA ALEPH Collaboration."A study of the decay width difference in the B-s(0)-(B)over-bar(s)(0) system using phi phi correlations".PHYSICS LETTERS B 486.3-4(2000):#REF!.
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