Study of theK ⁺ K ⁻ π⁺ π⁻ system centrally produced in the reactions π⁺ p→π⁺(K ⁺ K ⁻ π⁺ π⁻)p andpp→p(K ⁺ K ⁻ π⁺ π⁻)p at 85 GeV/c

Abstract

The reactions π⁺ p→π⁺(K ⁺ K ⁻ π⁺ π⁻ p andpp→p(K ⁺ K ⁻ π⁺ π⁻)p where the (K ⁺ K ⁻ π⁺ π⁻) system is centrally produced have been studied at 85 GeV/c. 48% of the final state proceeds through single or double vector meson resonant production i.e.,K ^*0(890) (37%), ϕ (4%),ρ ⁰ (7%). Evidence is found for associatedK ^*0 (890)$\bar K$ ^*o (890) production (6.4±1.1%) with a cross section ten times higher than that found for associated ϕ ϕ production in the same experiment.