Neutral Kaon-Neutral Antikaon Mixing Beyond Leading Order.

The one-loop QCD corrections to K('0)-(')K('0) mixing are calculated in the approximation of retaining only the first term in an expansion in powers of the inverse of the W mass. The results are compared to those previously obtained in the leading log approximation. A pro- cedure to sum the subleading logarithms of the W mass is outlined, and carried out. We find that the subleading corrections restore the results of the free quark calculation.