  We study the effects on oscillations in the neutral-Kaon system from lepton
and hadron self-energy loops in the W-boson propagators. The corresponding W
box diagrams are evaluated by attaching the external quark lines to covariant
vertex functions for the composite Kaons, integrating over all off-shell
momenta. We find that the ratio of the imaginary and real parts of the
amplitude is of the same size as with the experimental value of the modulus of
the CP-violating parameter epsilon.
