ϕ-meson production in proton-proton collisions
K. Nakayama, J. W. Durso, J. Haidenbauer, C. Hanhart, J. Speth
Abstract
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 NNϕ coupling strength from this reaction are discussed. In the absence of a sufficient set of data, which would enable an accurate determination of the NNϕ 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 NNϕ coupling constant is small. The analysis yields values for gNNϕ that are compatible with the OZI rule.
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