Study of the antiproton-proton annihilations into six body final states at 750 MeV/c and channels with associated production of K K

In this work we present an analysis of the antiproton-proton annihilations into six body final states with strange particle production at 750 HeV/c. It is shown that these final states are dominated at this energy by resonance production in quasi-three body Intermediate states. We determine the scattering length of the resonanceδ+ (970) which is found to be compatible with earlier determinations. fe also study the production of the resonance ω(783) associated to the system K0K0 in the five body final state and determine Its polarization, which 1s not compatible with that obtained for the p0(770) in the final state K0K0 p0. The amplitudes should be equal in a quark rearrangement model. (Author) 11 refs