A MEASURE VERTICAL-BAR-V-CB-VERTICAL-BAR FROM (B)OVER-BAR(0)-]D-ASTERISK+L-(NU)OVER-BAR(L)
ALEPH Collaboration
刊名PHYSICS LETTERS B
1995
卷号359期号:1-2页码:#REF!
学科分类Physics
DOI10.1016/0370-2693(95)01021-H
通讯作者BUSKULIC, D (reprint author), INST NATL PHYS NUCL & PHYS PARTICULES, CNRS, PHYS PARTICULES LAB, F-74019 ANNECY LE VIEUX, FRANCE.
文章类型Article
英文摘要From approximately 3 million hadronic decays of Z bosons recorded with the ALEPH detector at LEP, a sample of 410 +/- 32 ($) over bar B-0 --> D*(+)l(-)nu(l) candidates is selected, where l is either an electron or a muon. The differential decay rate d Gamma(($) over bar B-0 --> D*(+)l(-)nu(l))/d omega from this sample is fitted, yielding a value for the product of the CKM matrix element \V-cb\ and the normalisation of the decay form factor at the point of zero recoil of the D*(+) meson F(omega = 1)\V-cb\ = (31.4 +/- 2.3(stat) +/- 2.5(syst)) x 10(-3). A value for \V-cb\ is extracted using theoretical calculations of the form factor normalisation, with the result \V-cb\ = (34.5 +/- 2.5(stat) +/- 2.7(syst) +/- 1.5(theory)) X 10(-3) From the integrated spectrum, the measured branching fraction is Br(($) over bar B-0 --> D*(+)l(-)nu) = (5.18 +/- 0.30(stat) +/- 0.62(syst))%.
类目[WOS]Physics, Multidisciplinary
收录类别SCI
WOS记录号WOS:A1995RY67400036
引用统计
被引频次:47[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/311005/227118
专题中国科学院高能物理研究所_实验物理中心_期刊论文
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ALEPH Collaboration. A MEASURE VERTICAL-BAR-V-CB-VERTICAL-BAR FROM (B)OVER-BAR(0)-]D-ASTERISK+L-(NU)OVER-BAR(L)[J]. PHYSICS LETTERS B,1995,359(1-2):#REF!.
APA ALEPH Collaboration.(1995).A MEASURE VERTICAL-BAR-V-CB-VERTICAL-BAR FROM (B)OVER-BAR(0)-]D-ASTERISK+L-(NU)OVER-BAR(L).PHYSICS LETTERS B,359(1-2),#REF!.
MLA ALEPH Collaboration."A MEASURE VERTICAL-BAR-V-CB-VERTICAL-BAR FROM (B)OVER-BAR(0)-]D-ASTERISK+L-(NU)OVER-BAR(L)".PHYSICS LETTERS B 359.1-2(1995):#REF!.
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