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Search for B-c meson in hadronic Z decays
ALEPH Collaboration
1997
发表期刊PHYSICS LETTERS B
卷号402期号:1-2页码:#REF!
通讯作者Barate, R (reprint author), CNRS, PHYS PARTICULES LAB, IN2P3, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
摘要A search for the B-c meson decaying into the channels J/psi pi(+) and J/psi l(+)nu(l) (l = e or mu) is performed in a sample of 3.9 million hadronic Z decays collected by the ALEPH detector. This search results in the observation of 0 and 2 candidates in each of these channels, respectively, while 0.44 and 0.81 background events are expected. The following 90% confidence level upper limits are derived: Br(Z --> BcX)/Br(Z --> q (q) over bar BR(B-c(+) --> J/psi pi(+)) < 3.6 x 10(-5), Br(Z --> BcX)/Br(Z-->q (q) over bar)Br(B-c(+) --> J/psi l(+)nu) < 5.2 x 10(-5). Another B-c(+) --> J/psi(e(+)e(-))mu(+)nu(mu) candidate with very low background probability, found in an independent analysis, is also described in detail. (C) 1997 Published by Elsevier Science B.V.
学科领域Physics
DOI10.1016/S0370-2693(97)00461-9
收录类别SCI
WOS类目Physics, Multidisciplinary
WOS记录号WOS:A1997XD04900031
引用统计
被引频次:30[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/311005/226988
专题实验物理中心
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ALEPH Collaboration. Search for B-c meson in hadronic Z decays[J]. PHYSICS LETTERS B,1997,402(1-2):#REF!.
APA ALEPH Collaboration.(1997).Search for B-c meson in hadronic Z decays.PHYSICS LETTERS B,402(1-2),#REF!.
MLA ALEPH Collaboration."Search for B-c meson in hadronic Z decays".PHYSICS LETTERS B 402.1-2(1997):#REF!.
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