High-energy diffraction dissociation of KL0 into exclusive final states.

We have observed diffraction dissociation of K/sub L//sup 0/ mesons with a carbon target into the exclusive final states K/sub S//sup 0/..pi../sup +/..pi../sup -/, K/sub S//sup 0/..omega.., and K/sub S//sup 0/phi. The diffraction production cross section for these states is not strongly dependent on the incident energy, varying at most by 30% between 75 and 150 GeV. The mass distributions do not change appreciably as a function of laboratory energy. The ratio of the diffractive mass-threshold production of K/sup *//sup +- /..pi../sup minus-or-plus/, K/sub S//sup 0/rho, K/sub S//sup 0/..omega.., and K/sub S//sup 0/phi is compared with previously obtained lower-energy data.