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    Experimental Discrimination between Charge 2e/3 Top Quark and Charge 4e/3 Exotic Quark Production Scenarios

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    Baringer_1-22-2007.pdf (166.6Kb)
    Issue Date
    2007-01-22
    Author
    Baringer, Philip S.
    Bean, Alice
    Coppage, Don
    Gardner, J.
    Hensel, Carsten
    Moulik, Tania
    Wilson, Graham Wallace
    Abazov, V. M.
    Abbott, B.
    Abolins, M.
    Acharya, B. S.
    Publisher
    American Physical Society
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
    Metadata
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    Abstract
    We present the first experimental discrimination between the 2e/3 and 4e/3 top quark electric charge scenarios, using top quark pairs (tt-bar) produced in pp-bar collisions at s√=1.96  TeV by the Fermilab Tevatron Collider. We use 370  pb(−1) of data collected by the D0 experiment and select events with at least one high transverse momentum electron or muon, high transverse energy imbalance, and four or more jets. We discriminate between b- and b-bar-quark jets by using the charge and momenta of tracks within the jet cones. The data are consistent with the expected electric charge, |q|=2e/3. We exclude, at the 92% C.L., that the sample is solely due to the production of exotic quark pairs QQ-overbar with |q|=4e/3. We place an upper limit on the fraction of QQ-overbar pairs ρ<0.80 at the 90% C.L.
    Description
    This is the publisher's version, also available electronically from http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.98.041801.
    URI
    http://hdl.handle.net/1808/15405
    DOI
    https://doi.org/10.1103/PhysRevLett.98.041801
    ISSN
    0031-9007
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    V. M. Abazov et al. (D0 Collaboration). (2007). "Experimental Discrimination between Charge 2e/3 Top Quark and Charge 4e/3 Exotic Quark Production Scenarios." Physical Review Letters, 98(4):041801. http://dx.doi.org/10.1103/PhysRevLett.98.041801.

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    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    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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