Top-quark polarization ate−e+colliders

Once top quarks are found, because they are heavy they will allow many new tests of the standard model and new probes of physics at the 100-GeV scale. In this paper we discuss the polarization of the top quark produced in $e^{-}{e}^{+}$ collisions for $\sqrt{S}=0.5\mathrm{} \mathrm{and} 1$ TeV. The predictions of the top-quark polarization arising from the interactions of QCD, the standard-model electroweak theory, and an electroweak theory with dynamical symmetry breaking is examined.