Abstract

The DELTA-Q = - DELTA-S transitions in semileptonic decays of neutral kaons are estimated. We find a suppression of 10(-7) with respect to the allowed DELTA-Q = DELTA-S transition, within the standard model. Asymmetries in semileptonic decays of K(L) and K(S) as well as time-dependent semileptonic decays of a coherent K(S)-K(L) state are studied.