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arXiv · hep-ph/9807420

Charge asymmetry of heavy quarks at hadron colliders

J. H. Kühn·G. Rodrigo
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Abstract

A sizeable difference in the differential production cross section of top and antitop quarks, respectively, is predicted for hadronically produced heavy quarks. It is of order $α_s$ and arises from the interference between charge odd and even amplitudes respectively. For the TEVATRON it amounts up to 15\% for the differential distribution in suitable chosen kinematical regions. The resulting integrated forward-backward asymmetry of 4--5\% could be measured in the next round of experiments. At the LHC the asymmetry can be studied by selecting appropriately chosen kinematical regions. Furthermore, a slight preference at LHC for centrally produced antitop is predicted, with top quarks more abundant at large positive and negative rapidities.

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J. H. Kühn, G. Rodrigo. 1998-07-20. Charge asymmetry of heavy quarks at hadron colliders. https://doi.org/10.1103/physrevd.59.054017

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