Rare decays

Rare decay experiments have made significant advances in the last several years. Limits on lepton number violating decays of kaons have been tightened. Large samples of strangeness changing neutral current kaon decays have been collected. For several suppressed processes, discovery windows for new physics have been substantially narrowed. Opportunities for detecting direct CP-violation have been changed by the observation of a new background to one decay mode and the prospects of high statistics studies of another process. 23 refs., 14 figs., 2 tabs