{
  "id": "1109.3202",
  "version": "v1",
  "published": "2011-09-14T20:12:51.000Z",
  "updated": "2011-09-14T20:12:51.000Z",
  "title": "Tevatron Top Quark Forward-Backward Asymmetry -- Implications for Same-sign Top Quark Pair Production",
  "authors": [
    "Edmond L. Berger"
  ],
  "comment": "7 pages, 5 figures; to be published in the Proceedings of the DPF-2011 Conference, Providence, RI, Aug 8 - 13, 2011",
  "categories": [
    "hep-ph",
    "hep-ex"
  ],
  "abstract": "The forward-backward asymmetry for top quarks measured in proton-antiproton collisions at the Tevatron shows an interesting deviation from standard model expectations. Among possible interpretations, the exchange of a non-universal, flavor-changing $Z^\\prime$ is of some interest as it naturally predicts a top quark in the forward region of rapidity. To reproduce the size of the Tevatron asymmetry, the couplings of the $Z^\\prime$ to standard model quarks must be large, inevitably leading to production of same-sign top quark pairs at the Tevatron and at the Large Hadron Collider (LHC). We discuss the constraints on this model from (a) the Tevatron $t \\bar{t}$ cross section, (b) the Tevatron $t \\bar{t}$ invariant mass distribution, and the limits at the Tevatron on the same sign top quark pair cross section. We explore the discovery potential for $tt$ and $ttj$ production in early LHC experiments at 7 TeV and conclude that if a $tt$ signal is not observed with 1 fb$^{-1}$ of integrated luminosity, then a non-universal $Z^\\prime$ alone cannot explain the Tevatron forward-backward asymmetry. Limits on the same sign cross section at the LHC from the CMS collaboration already disfavor this interpretation of the reported asymmetry.",
  "revisions": [
    {
      "version": "v1",
      "updated": "2011-09-14T20:12:51.000Z"
    }
  ],
  "analyses": {
    "keywords": [
      "quark pair production",
      "quark forward-backward asymmetry",
      "implications",
      "quark pair cross section",
      "standard model expectations"
    ],
    "tags": [
      "conference paper"
    ],
    "note": {
      "typesetting": "TeX",
      "pages": 7,
      "language": "en",
      "license": "arXiv",
      "status": "editable",
      "inspire": 927497,
      "adsabs": "2011arXiv1109.3202B"
    }
  }
}