A Measurement of the |V(cb)| from anti-B(0) --> D*+- lepton- anti-lepton-neutrino

ALEPH Collaboration (1995) A Measurement of the |V(cb)| from anti-B(0) --> D*+- lepton- anti-lepton-neutrino. Physics Letters B, 359 (1-2). pp. 236-248. ISSN 0370-2693

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Abstract

From approximately 3 million hadronic decays of Z bosons recorded with the aleph detector at lep, a sample of 410 ± 32 candidates is selected, where ℓ is either an electron or a muon. The differential decay rate from this sample is fitted, yielding a value for the product of the CKM matrix element |Vcb| and the normalisation of the decay form factor at the point of zero recoil of the D∗+ meson (ω = 1)|Vcb| = (31.4 ± 2.3stat ± 2.5syst) × 10−3. A value for |Vcb| is extracted using theoretical calculations of the form factor normalisation, with the result |Vcb| = (34.5 ± 2.5stat ± 2.7syst ± 1.5theory) × 10−3. From the integrated s the measured branching fraction is %.

Item Type:
Journal Article
Journal or Publication Title:
Physics Letters B
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100/3106
Subjects:
?? NUCLEAR AND HIGH ENERGY PHYSICS ??
ID Code:
64065
Deposited By:
Deposited On:
08 May 2013 15:52
Refereed?:
Yes
Published?:
Published
Last Modified:
20 Sep 2023 00:29