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Journal of High Energy Physics

, 2014:84 | Cite as

Top quark charge asymmetry: searching for light axigluons in \( t\overline{t} \) + jet production at the LHC

  • Stefan Alte
  • Stefan BergeEmail author
  • Hubert Spiesberger
Open Access
Article

Abstract

We investigate the discovery potential of light color-octet bosons in the mass range of 100-400 GeV in exclusive top-pair plus jet production at the LHC, pp\( t\overline{t} \) + jet. We study the impact of such bosons on the incline, the energy and the rapidity asymmetries. We show that light axigluons with large couplings to quarks can be discovered at the LHC with a luminosity of a few fb−1. Almost all of the considered axigluon parameter space can be probed using the already available 2011/2012 LHC data. In a small-coupling scenario, axigluons could be discovered using the charge asymmetry with 65 fb−1 at the LHC and a center of mass energy of 14 TeV. We furthermore show that \( t\overline{t} \) + jet production could reveal the existence of scenarios where axigluons couple with a different strength to up-and down-type quarks.

Keywords

QCD Phenomenology Phenomenological Models 

Notes

Open Access

This article is distributed under the terms of the Creative Commons Attribution License (CC-BY 4.0), which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited.

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Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0), which permits use, duplication, adaptation, distribution, and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.

Authors and Affiliations

  • Stefan Alte
    • 1
  • Stefan Berge
    • 1
    • 2
    Email author
  • Hubert Spiesberger
    • 1
  1. 1.PRISMA Cluster of Excellence, Institut für Physik (WA THEP)Johannes Gutenberg-UniversitätMainzGermany
  2. 2.Institut für Theoretische Teilchenphysik und KosmologieRWTH AachenAachenGermany

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