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    Experimental limits on weak annihilation contributions to b -> ul nu decays

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    GetPDFServlet17.pdf (215.6Kb)
    Issue Date
    2006-03
    Author
    Besson, David Zeke
    Publisher
    AMERICAN PHYSICAL SOC
    Type
    Article
    Published Version
    http://publish.aps.org/
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    Abstract
    We present the first experimental limits on high-q(2) contributions to charmless semileptonic B decays of the form expected from the weak annihilation (WA) decay mechanism. Such contributions could bias determinations of vertical bar V(ub)vertical bar from inclusive measurements of B -> X(u)l nu. Using a wide range of models based on available theoretical input we set a limit of Gamma(WA)/Gamma(b -> u)< 7.4% (90% confidence level) on the WA fraction, and assess the impact on previous inclusive determinations of vertical bar V(ub)vertical bar.
    URI
    http://hdl.handle.net/1808/1420
    Collections
    • Physics and Astronomy Scholarly Works [1632]
    • Center for Russian, East European, and Eurasian Studies Scholarly Publications [557]
    Citation
    Rosner, JL, Adam, NE, et al. Experimental limits on weak annihilation contributions to b -> ul nu decays. PHYSICAL REVIEW LETTERS. March 2006. 96(12)

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    Lawrence, KS 66045
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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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