Observation of doubly-charmed B decays at LEP

	Observation of doubly-charmed B decays at LEP
	ALEPH Collaboration
刊名	EUROPEAN PHYSICAL JOURNAL C
	1998
卷号	4 期号:3 页码:387-407
关键词	DETECTOR MESONS ALEPH
通讯作者	Barate, R (reprint author), IN2P3, CNRS, Phys Particules Lab, F-74019 Annecy Le Vieux, France.
英文摘要	A search for doubly-charmed B decays with both charmed mesons reconstructed is performed, using about 3.8 million hadronic Z decays recorded with the ALEPH detector at LEP. A clear signal is observed in the channels B --> D(s)(D) over bar(X) and B --> D (D) over bar(X) (where D can be either a D(O), a D(+) or a D(+)), providing the first direct evidence for doubly-charmed B decays involving no D(s) production. Evidence for associated K(S)(O) and K(+/-) production in the decays B --> D (D) over bar(X) is also presented and some candidates for completely reconstructed decays B --> D(s)(D) over bar(n pi), B --> D (D) over bar K(S)(O) and B --> D (D) over bar K(+/-) are observed. Furthermore, candidates for the two-body Cabibbo suppressed decays B(O) --> D(-)D(+) and B(-) --> D(()O)D((*)-) are also observed. Measurements of the corresponding branching fractions are extracted.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
语种	英语
WOS记录号	WOS:000075027200002
公开日期	2016-02-25
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/211926]
专题	高能物理研究所_实验物理中心
作者单位	中国科学院高能物理研究所
推荐引用方式 GB/T 7714	ALEPH Collaboration. Observation of doubly-charmed B decays at LEP[J]. EUROPEAN PHYSICAL JOURNAL C,1998,4(3):387-407.
APA	ALEPH Collaboration.(1998).Observation of doubly-charmed B decays at LEP.EUROPEAN PHYSICAL JOURNAL C,4(3),387-407.
MLA	ALEPH Collaboration."Observation of doubly-charmed B decays at LEP".EUROPEAN PHYSICAL JOURNAL C 4.3(1998):387-407.