Constraining anomalous top quark couplings at the Fermilab Tevatron

We explore the influence of an anomalous chromomagnetic moment κ on the production characteristics of top quark pairs at the Fermilab Tevatron with a center-of-mass energy of √s =1.8 TeV. We find that for top quarks in the 175 GeV mass range, present measurements are probing values of κ of order 0.25. We discuss a class of technicolor models with techniscalars which may produce such large values of κ in conjunction with the generation of ${\mathit{m}}_{\mathit{t}}$. For κ’s in this range we find that significant enhancements in both the qq¯, gg→tt¯ production cross sections are obtained. Once sufficient statistics have been accumulated and QCD uncertainties are under control, future high precision measurements at the Fermilab Tevatron will eventually be sensitive to values of κ with magnitudes smaller than ≃0.1.