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    Measurement of the Effective Weak Mixing Angle in p(p)over-bar - greater than Z/gamma* - greater than e(+)e(-) Events

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    Wilson_mixing_angle2015.pdf (208.6Kb)
    Issue Date
    2015-07-22
    Author
    Wilson, Graham Wallace
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    We present a measurement of the fundamental parameter of the standard model, the weak mixing angle sin2θℓeff which determines the relative strength of weak and electromagnetic interactions, in pp¯→Z/γ∗→e+e− events at a center of mass energy of 1.96 TeV, using data corresponding to 9.7  fb−1 of integrated luminosity collected by the D0 detector at the Fermilab Tevatron. The effective weak mixing angle is extracted from the forward-backward charge asymmetry as a function of the invariant mass around the Z boson pole. The measured value of sin2θℓeff=0.23147±0.00047 is the most precise measurement from light quark interactions to date, with a precision close to the best LEP and SLD results.
    Description
    This is the published version. Copyright 2015 American Physical Society
    URI
    http://hdl.handle.net/1808/19324
    DOI
    https://doi.org/10.1103/PhysRevLett.115.041801
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    D0 Collaboration. "Add to E-Shelf Measurement of the Effective Weak Mixing Angle in P(p)over-bar - Greater than Z/gamma* - Greater than E(+)e(-) Events." Physical Review Letters 115.4 (2015). http://dx.doi.org/10.1103/PhysRevLett.115.041801

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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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