STUDY OF T-VIOLATION IN K+-]PI+MU+MU- DECAYS

We study the possibility of observing T violation in the process K+ -- > pi+ mu+ mu-. To this end we define appropriate T-violation indicator s. We find that the measurements of the two-spin correlations can prov ide a reliable test of the Cabibbo-Kobayashi-Maskawa mechanism of T vi olation. The final-state interactions mainly contribute to indicators involving only one spin. We also estimate the size of the contribution of a representative set of extensions of the standard model to T-viol ation indicators. We find that their contribution can be important onl y in models with loosely constrained new parameters.