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    Measurements of the tt¯ charge asymmetry using the dilepton decay channel in pp collisions at s√ = 7 TeV

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    CMS_tt_charge_assym2014.pdf (570.6Kb)
    Issue Date
    2014-04
    Author
    CMS Collaboration
    Sanders, Stephen J.
    Publisher
    Springer Verlag
    Type
    Article
    Article Version
    Scholarly/refereed, publisher version
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    Abstract
    The tt¯ charge asymmetry in proton-proton collisions at s√ = 7 TeV is measured using the dilepton decay channel (ee, eμ, or μμ). The data correspond to a total integrated luminosity of 5.0 fb−1, collected by the CMS experiment at the LHC. The tt and lepton charge asymmetries, defined as the differences in absolute values of the rapidities between the reconstructed top quarks and antiquarks and of the pseudorapidities between the positive and negative leptons, respectively, are measured to be A C = −0.010 ± 0.017 (stat.) ± 0.008 (syst.) and AlepC = 0.009 ± 0.010 (stat.) ± 0.006 (syst.). The lepton charge asymmetry is also measured as a function of the invariant mass, rapidity, and transverse momentum of the tt¯ system. All measurements are consistent with the expectations of the standard model.
    Description
    This is the published version.
    URI
    http://hdl.handle.net/1808/19309
    DOI
    https://doi.org/10.1007/JHEP04(2014)191
    Collections
    • Physics & Astronomy Scholarly Works [1713]
    Citation
    The CMS collaboration. "Measurements of the tt¯ charge asymmetry using the dilepton decay channel in pp collisions at s√ = 7 TeV." Journal of High Energy Physics. April, 2014: v5n4. http://dx.doi.org/10.1007/JHEP04(2014)191

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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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