2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/83028The reaction $pp \to pp ϕ$ is investigated within a relativistic meson-exchange model of hadronic interactions. The possibility of extracting the $NNϕ$ coupling constant from a study of this process is explored. A combined analysis of $ω-$ and $ϕ$-meson production in proton-proton collisions utilizing recent data on these reactions is carried out and yields values for $g_{NNϕ}$ that are compatible with the OZI rule.5 pages, 2 figres, Presented at the Baryon98 conference, Bonn, September 1998Nuclear Theorytext