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A FRESH LOOK AT ϕ − ω MIXING
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1992
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Experimental Nuclear PhysicsNuclear PhysicsPhysicsEngineeringNatural SciencesParticle PhysicsNuclear TheoryDifferent Theoretical DescriptionsMeson SpectroscopyLepton-nucleon ScatteringPhase SeparationMultiphase FlowDispersionHeavy Flavour PhysicChaotic MixingNeutral DetectorDirect Decays
An unprejudiced analysis is made of the possibility of different theoretical descriptions of the decays ϕ → ρπ → π + π − π 0 and ϕ → πγ, taking into account both the ϕ − ω mixing and the direct decays ϕ → ρπ and ϕ → πγ. For this purpose the data from the Neutral Detector on the reactions e + e − → π + π − π 0 , πγ, K L K S in the interval [Formula: see text] are used. Experimental data are shown not to permit one to answer the question: What is the origin of the decay ϕ → ρπ (πγ)? This decay can be almost completely caused either by the ϕ − ω mixing or by the direct decay ϕ → ρπ (ϕ → πγ). Intermediate cases are certainly possible. It is shown that to elucidate the situation at least an order of magnitude improvement of accuracy is required. Possibilities of studying this problem on the collider VEPP-2M and ϕ factories are discussed.