7,387 research outputs found

    Forward-backward asymmetry in t¯t production

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    We present new measurements of the forward-backward asymmetry in t¯t production, performed with 5 fb−1 of Tevatron p¯p collisions at center of mass energy 1.96 TeV, recorded and analyzed at CDF. Significant inclusive asymmetries are observed in both the lepton+jets and the dilepton decay modes of the t¯t pair. In the dilepton mode, the asymmetry is observed in the reconstructed top rapidity, and in the lepton rapidity difference which is independent of any top reconstruction. In the lepton plus jets sample, the full reconstruction of the top kinematics is used to measure the dependence of the asymmetry on the rapidity difference Δy and the invariant mass Mt¯t of the t¯t system, and the asymmetry is found to be most significant at large rapidity and mass

    Asymmetries in top quark pair production at hadron colliders

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    We review the asymmetries in top quark pair production at the Tevatron and the LHC. We summarize the experimental measurements and the interpretations of a possible excess in terms of new physics. We also review other top quark properties-emphasizing effects related to the ttˉt \bar t asymmetries-as well as other collider signals.Comment: RevTeX 40 pages. Final version to be published in Reviews of Modern Physics, with several addition

    First ADS analysis of B- -> D0K- decays in hadron collisions

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    Proceedings of DISCRETE 2010, Symposium on Prospects in the Physics of Discrete Symmetries, Rome (IT), 6-11 December 2010Comment: 7 pages, 5 figure
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