Probing anomalous top quark interactions at the Fermilab Tevatron Collider

Abstract

We study the effects of dimension-six operators contributing to the $gt\bar{t}$ vertex in top quark pair production at the Tevatron collider. We derive both the limits from Run 1 data and the potential bounds from future runs (Run 2 and 3). Although the current constraints are not very strong, the future runs are quite effective in probing these operators. We investigate the possibility of disentangling different operators with the $t\bar{t}$ invariant mass distribution and the top quark polarization asymmetry. We also study the effects of a different set of operators contributing to single top production via the $Wt\bar{b}$ coupling. We derive the current and potential future bounds on these anomalous operators and find that the upgraded Tevatron can improve the existing constraints from $R_b$ for one of the operators.

20 pages, 2 figures, REVTEX, some clarifying remarks added

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• Single top quarks at the Fermilab Tevatron
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• Threshold Resummation of the Total Cross Section for Heavy Quark Production in Hadronic Collisions
• New Gauge Interactions and Single Top Quark Production
• Single top quark production as a probe of R-parity-violating SUSY at pp and p\bar p colliders
• Measurement of the t-tbar Production Cross Section in p-pbar Collisions at sqrt(s)=1.8 TeV
• Four-Fermi Effective Operators in Top-Quark Production and Decay
• Supersymmetric QCD Corrections to Single Top Quark Production at the Fermilab Tevatron
• Supersymmetric Electroweak Parity Nonconservation in Top Quark Pair Production at the Fermilab Tevatron

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• Implications of LEP/SLD Data for New Physics in Zbb_bar Couplings
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