A dynamical model for pseudoscalar-pseudoscalar meson scattering based on meson exchange, suitable for use in a variety of low-and intermediate-energy mesonic interactions, has been constructed and applied to rr and Krr scattering with good quantitative results. The model includes both sand t-channel exchange, and is found to require pseudoscalar-pseudoscalar coupling to a scalar octet to fit the high energy s-wave phases in the I = 0 r~ channel and in the I =f KQT channel. Coupling of the rr and KI? channels is found to play a crucial role in explaining the S*(975) resonance.
The production of φ-mesons in proton-proton collisions is investigated within a relativistic meson-exchange model of hadronic interactions. The experimental prerequisites for extracting the N N φ coupling strength from this reaction are discussed. In the absence of a sufficient set of data, which would enable an accurate determination of the N N φ coupling strength, we perform a combined analysis, based on some reasonable assumptions, of the existing data for both ω-and φ-meson production. We find that the recent data from the DISTO collaboration on the angular distribution of the φ meson indicate that the N N φ coupling constant is small. The analysis yields values for g N N φ that are compatible with the OZI rule.
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