Searches for anomalous interactions in rare kaon decays

Feasible searches for anomalous processes involving New Physics in rare decays of K-mesons are considered. Discussed are searches for lepton flavor nonconservation in kaon decays, searches for anomalous scalar, pseudoscalar, and tensor interactions, and searches for nonstandard processes violating T- (or CP-) invariance in the decays of charged K-mesons. Considered also are searches for new light particles (the P-sgoldstino) in kaon decays and studies involving ‘tagged’ $\pi^0$-mesons produced in $K^0_L\to 3\pi^0$ and $K^+\to\pi^+\pi^0$ decays, as well as a number of other phenomena. The prospects of future experiments in this field being carried out at new experimental facilities are discussed.