We have measured the cross section for the reaction p̄p→KS^_⁰KL^_⁰ from 100-800 MeV/c. A significant enhancement in the cross section is observed at a mean momentum of 600 MeV/c. A Legendre-polynomial analysis of the angular distributions also shows an enhancement in the A₂ coefficient in the same momentum range. A plausible explanation of the data indicates a new meson state ρ(1970) with a mass $M=1968$ MeV, width Γ=35 MeV, and JPC=1^--.
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Benvenuti et al. (1971) studied this question.
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