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HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR
ALEPH Collaboration
1994
发表期刊ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS
卷号62期号:2页码:#REF!
通讯作者BUSKULIC, D (reprint author), CNRS, IN2P3, PHYS PARTICULES LAB, F-74019 ANNECY LE VIEUX, FRANCE.
摘要In 431 000 hadronic Z decays recorded with the ALEPH detector at LEP, the yields of electrons and muons in events with one or more prompt leptons have been analysed to give information on the production and decay of heavy quarks. The fractions of bbBAR and ccBAR events are measured to be 0.219+/-0.006+/-0.005 and 0.165+/-0.005+/-0.020, and the corresponding forward-backward asymmetries at the Z mass are measured to be 0.090+/-0.013+/-0.003 and 0.111+/-0.021+/-0.018, after QED and QCD corrections. Measurements for the semileptonic branching ratios BR(b-->l-nuXBAR) and BR(b-->c-->l+nuX) yield 0.114+/-0.003+/-0.004 and 0.082+/-0.003+/-0.012, respectively. The dilepton events enable measurement of the b mixing parameter, chi=0.114+/-0.014+/-0.008. Results are also presented for the energy variation of the bbBAR asymmetry and the parameters required to describe heavy quark fragmentation. From the asymmetry measurements, the effective electroweak mixing angle is sin2 theta(W)eff=0.2333+/-0.0022.
文章类型Article
学科领域Physics
收录类别SCI
WOS类目Physics, Particles & Fields
WOS记录号WOS:A1994NQ09800001
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被引频次:60[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/311005/226722
专题实验物理中心
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ALEPH Collaboration. HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR[J]. ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,1994,62(2):#REF!.
APA ALEPH Collaboration.(1994).HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR.ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS,62(2),#REF!.
MLA ALEPH Collaboration."HEAVY FLAVOR PRODUCTION AND DECAY WITH PROMPT LEPTONS IN THE ALEPH DETECTOR".ZEITSCHRIFT FUR PHYSIK C-PARTICLES AND FIELDS 62.2(1994):#REF!.
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