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Constraining heavy colored resonances from top-antitop quark events
classification
✦ hep-ph
keywords
quarkasymmetrychargeeventsmasstop-antitopaxigluonsbosons
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Recent measurements of the top quark charge asymmetry at Tevatron disfavor the existence of flavor universal axigluons and colorons at 2 sigmas. In this letter we explore the possibility to reconcile the data with these models and use the charge asymmetry and the invariant mass distribution of top-antitop quark pair events to constrain the mass and couplings of massive color-octet gauge bosons decaying to top quarks.
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