Production of orbitally excited charm mesons in semileptonic B decays

	Production of orbitally excited charm mesons in semileptonic B decays
	ALEPH Collaboration
刊名	ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS
	1997
卷号	73 期号:4 页码:#REF!
通讯作者	Buskulic, D (reprint author), PHYS PARTICULES LAB, IN2P3 CNRS, F-74019 ANNECY LE VIEUX, FRANCE.
英文摘要	A sample of 3.6 million hadronic Z decays recorded between 1991 and 1995 with the ALEPH detector at LEP is used to investigate semileptonic decays of B mesons into final states involving orbitally excited charm mesons. Topological vertex criteria are used to search for decays involving narrow D states as well as wide D resonances and non-resonant D()pi final states. The sum of the branching ratios for these processes is measured to be Br((B) over bar --> D pi l(-)(v) over bar) + Br((B) over bar --> Dpi l(-)(v) over bar) = (2.26 +/-t 0.29(stat) +/- 0.33(syst))%, which accounts for a significant fraction of the deficit between inclusive measurements and the sum of exclusive semileptonic B decay modes.
学科主题	Physics
类目[WOS]	Physics, Particles & Fields
收录类别	SCI
WOS记录号	WOS:A1997WQ46400004
公开日期	2016-05-03
内容类型	期刊论文
源URL	[http://ir.ihep.ac.cn/handle/311005/227739]
专题	高能物理研究所_实验物理中心
推荐引用方式 GB/T 7714	ALEPH Collaboration. Production of orbitally excited charm mesons in semileptonic B decays[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,1997,73(4):#REF!.
APA	ALEPH Collaboration.(1997).Production of orbitally excited charm mesons in semileptonic B decays.ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,73(4),#REF!.
MLA	ALEPH Collaboration."Production of orbitally excited charm mesons in semileptonic B decays".ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 73.4(1997):#REF!.