$\varphi$-meson production in proton-proton collisions

Abstract

The production of $\varphi$-mesons in proton-proton collisions is investigated within a relativistic meson-exchange model of hadronic interactions. The experimental prerequisites for extracting the $NN\varphi$ coupling strength from this reaction are discussed. In the absence of a sufficient set of data, which would enable an accurate determination of the $NN\varphi$ coupling strength, we perform a combined analysis, based on some reasonable assumptions, of the existing data for both $\omega$- and $\varphi$-meson production. We find that the recent data from the DISTO collaboration on the angular distribution of the $\varphi$ meson indicate that the $NN\varphi$ coupling constant is small. The analysis yields values for $g_{NN\varphi }$ that are compatible with the OZI rule.

21 pages, 3 figures, submitted to Phys.Rev.C

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