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$ϕ$-meson production in proton-proton collisions

K. Nakayama·J. W. Durso·J. Haidenbauer·C. Hanhart·J. Speth
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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 $g_{NNϕ}$ that are compatible with the OZI rule.

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K. Nakayama, J. W. Durso, J. Haidenbauer, C. Hanhart, J. Speth. 1999-04-14. $ϕ$-meson production in proton-proton collisions. https://doi.org/10.1103/physrevc.60.055209

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