MEASUREMENTS OF MEAN LIFETIME AND BRANCHING FRACTIONS OF B HADRONS DECAYING TO J/PSI
ALEPH Collaboration
刊名PHYSICS LETTERS B
1992
卷号295期号:3-4页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(92)91581-S
通讯作者BUSKULIC, D (reprint author), IN2P3,PHYS PARTICULES LAB,CNRS,F-74019 ANNECY LE VIEUX,FRANCE.
文章类型Article
英文摘要From a data sample of 450 000 hadronic events recorded with the ALEPH detector at LEP, 92 +/- 10 events are observed containing a J/psi meson decaying to mu+mu- or e+e-. From these data the measured inclusive branching fraction for a b flavoured hadron to decay to a J/psi is BR(b --> J/psiX) = (1.21 +/- 0.13 (stat.) +/- 0.08 (syst.))%, and the average b hadron lifetime in the events tagged with a J/psi is tau(b) = 1.35(-0.17)+0.19 +/- 0.05 ps. Five events are observed consistent with the exclusive decay B+/- --> J/psiK+/- and from these events the exclusive branching fraction is measured to be BR(B+/- --> J/psiK+/-) = (0.22 +/- 0.10 +/- 0.02)%. Upper limits for other exclusive branching ratios are given.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1992KB80100030
引用统计
被引频次:36[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/311005/227619
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. MEASUREMENTS OF MEAN LIFETIME AND BRANCHING FRACTIONS OF B HADRONS DECAYING TO J/PSI[J]. PHYSICS LETTERS B,1992,295(3-4):#REF!.
APA ALEPH Collaboration.(1992).MEASUREMENTS OF MEAN LIFETIME AND BRANCHING FRACTIONS OF B HADRONS DECAYING TO J/PSI.PHYSICS LETTERS B,295(3-4),#REF!.
MLA ALEPH Collaboration."MEASUREMENTS OF MEAN LIFETIME AND BRANCHING FRACTIONS OF B HADRONS DECAYING TO J/PSI".PHYSICS LETTERS B 295.3-4(1992):#REF!.
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