MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS
ALEPH Collaboration
刊名PHYSICS LETTERS B
1995
卷号361期号:1-4页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(95)01173-N
通讯作者BUSKULIC, D (reprint author), INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, PHYS PARTICULES LAB, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
英文摘要The lifetime of the B-s(0) meson is measured in approximately 3 million hadronic Z decays accumulated using the ALEPH detector at LEP from 1991 to 1994. Seven different D-s(-) decay modes were reconstructed and combined with an opposite sign lepton as evidence of semileptonic B-s(0) decays. Two hundred and eight D(s)(-)l(+) candidates satisfy selection criteria designed to ensure precise proper time reconstruction and yield a measured B-s(0) lifetime of tau(B-s(0)) = 1.59(-0.15)(+0.17) (stat) +/-0.03 (syst) ps. Using a larger, less constrained sample of events, the product branching ratio is measured to be Br((b) over bar --> B-s(0)) . Br(B-s(0) --> D(s)(-)l(+)nu X) = 0.82 +/- 0.09 (stat)(-0.14)(+0.13) (syst) %.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1995TD13600033
引用统计
被引频次:27[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/311005/227022
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ALEPH Collaboration. MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS[J]. PHYSICS LETTERS B,1995,361(1-4):#REF!.
APA ALEPH Collaboration.(1995).MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS.PHYSICS LETTERS B,361(1-4),#REF!.
MLA ALEPH Collaboration."MEASUREMENT OF THE B-S(0) LIFETIME AND PRODUCTION-RATE WITH D-S(-)L(+) COMBINATIONS IN Z-DECAYS".PHYSICS LETTERS B 361.1-4(1995):#REF!.
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