Study of the centrally produced ωρ0 and ωω systems inpp interactions at 300 GeV/c

We have performed a search for vector-vector final states centrally produced in proton proton interactions at 300 GeV/c using the CERN O spectrometer. Evidence is found for ??⁰ production in the reactionpp?p_f(2p⁺2p^-2p⁰)p_s and for ?? production in the reactionpp?p_f(2p⁺2p^-2p⁰)p_s. However no evidence is found for ?ø production in the reactionpp?p_f(K⁺K^-p⁺p^-p⁰)p_s.