AN INVESTIGATION OF B0D AND B0S OSCILLATION
ALEPH Collaboration
刊名PHYSICS LETTERS B
1994
卷号322期号:4页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(94)91177-0
通讯作者BUSKULIC, D (reprint author), CNRS, IN2P3, PHYS PARTICULES LAB, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
英文摘要B0B0BAR oscillation is studied using almost a million hadronic Z decays collected by the ALEPH experiment at LEP. Events are selected with two leptons present, on opposite sides of the event and with high transverse momentum. The leptons are expected to be dominantly from b decays; a topological vertexing technique is applied to measure the decay length of the b hadrons, and their momentum is determined using an energy-flow method. The fraction of events in which the leptons have the same charge is studied as a function of the measured decay time, and clear evidence is seen for the time-dependent nature of B(d)0B(d)0BAR mixing. The frequency measured for the oscillation corresponds to a mass difference for the B(d)0 mass eigenstates DELTAm(d) = (3.3(+0.5/-0.4) +/- 0.7) x 10(-4) eV/C2. Allowing a second frequency component for the B(s)0 a high value for DELTAm(s) is favoured, leading to the limit DELTAm(s) > 12 x 10(-4) eV/c2 (95% CL), from which (DELTAm/GAMMA)s > 2.0 is derived.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1994MY39600022
引用统计
被引频次:44[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/311005/227653
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. AN INVESTIGATION OF B0D AND B0S OSCILLATION[J]. PHYSICS LETTERS B,1994,322(4):#REF!.
APA ALEPH Collaboration.(1994).AN INVESTIGATION OF B0D AND B0S OSCILLATION.PHYSICS LETTERS B,322(4),#REF!.
MLA ALEPH Collaboration."AN INVESTIGATION OF B0D AND B0S OSCILLATION".PHYSICS LETTERS B 322.4(1994):#REF!.
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