Abstract
We study the effects of the anomalous chromoelectric and chromomagnetic dipole moments of the top quark on top-pair production, on top-pair plus one jet production, and on their ratios, as well as their dependence on the transverse momenta of the top quark and the jet. We also construct CP-odd and T̂-odd observables to probe the dispersive part of the chromoelectric form factor of the top quark, and compare their sensitivities in both top-pair and top-pair plus one jet production.