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    Improved measurement of vertical bar V-cb vertical bar using (B)over-bar -> D(*)l(nu)over-bar decays

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    e081803.pdf (138.1Kb)
    Issue Date
    2002-08
    Author
    Ammar, Raymond G.
    Besson, David Zeke
    Zhao, X.
    Publisher
    AMERICAN PHYSICAL SOC
    Type
    Article
    Published Version
    http://publish.aps.org/
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    Abstract
    We determine the weak coupling \V-cb\ between the b and c quarks using a sample of 3x10(6) B (B) over bar events in the CLEO detector at the Cornell Electron Storage Ring. We determine the yield of reconstructed (B) over bar -->D-*.(ν) over bar decays as a function of w, the boost of the D-* in the B rest frame, and from this we obtain the differential decay rate dGamma/dw. By extrapolating dGamma/dw to w=1, the kinematic end point at which the D-* is at rest relative to the B, we extract the product \V-cb\F(1), where F(1) is the form factor at w=1. Combined with theoretical results for F(1) we determine\V-cb\=0.0469+/-0.0014(stat)+/-0.0020(syst)+/-0.0018(theor).
    URI
    http://hdl.handle.net/1808/1312
    Collections
    • Physics and Astronomy Scholarly Works [1530]
    • Center for Russian, East European, and Eurasian Studies Scholarly Publications [557]
    Citation
    Briere, RA; Chen, GP;. et al. Improved measurement of vertical bar V-cb vertical bar using (B)over-bar -> D(*)l(nu)over-bar decays. PHYSICAL REVIEW LETTERS. August 2002. 89(8)

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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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