Charge asymmetry of heavy quarks at hadron colliders

Details Charge asymmetry of heavy quarks at hadron colliders Charge asymmetry of heavy quarks at hadron colliders

1998-07-20

arxiv.org/abs/hep-ph/9807420v1

Phys.Rev.D59:054017,1999

Physics

High Energy Physics

High Energy Physics - Phenomenology

LaTeX, 16pp, 14 figures, uses revtex. The complete paper, including figures, is also available via anonymous ftp at ftp://tt

Scientific paper

10.1103/PhysRevD.59.054017

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 $\alpha_s$ 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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