Abstract
We have studied both perturbative and nonperturbative QCD radiative corrections to the CP-violating polarization asymmetry PL of the outgoing muon in KL+- decay due to a light spin-0 boson and heavy t quark. We find that the perturbative QCD effects vanish whereas the nonperturbative ones as calculated by the sum-rule method give significant enhancement in the energy region 1 GeV/c2 to PL. © 1990 The American Physical Society.