EVIDENCE FOR B-BARYONS IN Z-DECAYS

doi:10.1016/0370-2693(92)90736-N

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	EVIDENCE FOR B-BARYONS IN Z-DECAYS
	ALEPH Collaboration
	1992
发表期刊	PHYSICS LETTERS B
卷号	278 期号:1-2 页码:#REF!
通讯作者	DECAMP, D (reprint author), CNRS,INST NATL PHYS NUCL & PHYS PARTICULES,PHYS PARTICULES LAB,F-74019 ANNECY LE VIEUX,FRANCE.
摘要	In 160 000 hadronic Z decays recorded with the ALEPH detector at LEP, the yields of LAMBDA-l- and LAMBDA-l+ combinations have been measured. The observed excess of LAMBDA-l- over LAMBDA-l+ of 53 +/- 13 is interpreted as evidence for b baryons and their semileptonic decay. Assuming that three body decay processes such as LAMBDA(b) --> LAMBDA(c)+ l- vBAR dominate the semileptonic decay of b baryons, this excess corresponds to a product branching ratio BR(b --> LAMBDA(b)).BR(LAMBDA(b) --> LAMBDA(c)+ l- vBAR).BR(LAMBDA(c)+ --> LAMBDA-X) = (0.95 +/- 0.22 (stat.) +/- 0.21 (syst.))%, where LAMBDA(b) and LAMBDA(c)+ denote the bottom and charm baryons respectively.
文章类型	Article
学科领域	Physics
DOI	10.1016/0370-2693(92)90736-N
收录类别	SCI
WOS类目	Physics, Multidisciplinary
WOS记录号	WOS:A1992HN24700037
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/311005/226955
专题	实验物理中心
推荐引用方式 GB/T 7714	ALEPH Collaboration. EVIDENCE FOR B-BARYONS IN Z-DECAYS[J]. PHYSICS LETTERS B,1992,278(1-2):#REF!.
APA	ALEPH Collaboration.(1992).EVIDENCE FOR B-BARYONS IN Z-DECAYS.PHYSICS LETTERS B,278(1-2),#REF!.
MLA	ALEPH Collaboration."EVIDENCE FOR B-BARYONS IN Z-DECAYS".PHYSICS LETTERS B 278.1-2(1992):#REF!.

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