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    Measurement of the angular distribution of electrons from W⃗ eν decays observed in pp-bar collisions at s√=1.8 TeV

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    Baringer_3-5-2001.pdf (183.7Kb)
    Issue Date
    2001-03-05
    Author
    Baringer, Philip S.
    Bean, Alice
    Coppage, Don
    Hebert, C.
    Abbott, B.
    Abolins, M.
    Abramov, V.
    Acharya, B. S.
    Adams, D. L.
    Adams, M.
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    We present the first measurement of the electron angular distribution parameter α(2) in W⃗ eν events produced in proton-antiproton collisions as a function of the W boson transverse momentum. Our analysis is based on data collected using the DØ detector during the 1994–1995 Fermilab Tevatron run. We compare our results with next-to-leading order perturbative QCD, which predicts an angular distribution of (1±α(1c)osθ*+α(2)cos(2)θ*), where θ* is the polar angle of the electron in the Collins-Soper frame. In the presence of QCD corrections, the parameters α(1) and α(2) become functions of pWT, the W boson transverse momentum. This measurement provides a test of next-to-leading order QCD corrections which are a non-negligible contribution to the W boson mass measurement.
    Description
    This is the publisher's version, also available electronically from http://journals.aps.org/prd/abstract/10.1103/PhysRevD.63.072001.
    URI
    http://hdl.handle.net/1808/15363
    DOI
    https://doi.org/10.1103/PhysRevD.63.072001
    ISSN
    1550-7998
    Collections
    • Physics and Astronomy Scholarly Works [1134]
    Citation
    B. Abbott et al. ((DØ Collaboration)). (2001). "Measurement of the angular distribution of electrons from W⃗ eν decays observed in pp-bar collisions at s√=1.8 TeV." Physical Review D, 63(7):072001. http://dx.doi.org/10.1103/PhysRevD.63.072001

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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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