Abstract
The parton fusion model is used to describe the longitudinal differential cross section (dσ/dxF) of hadronic ϕ production. Thedσ/dxF for ϕ production in π±p,\(\mathop p\limits^{( - )} p\) andK±p interactions is evaluated in the model by using structure functions for the constituents of the interacting particles. A comparison between the model and high statistics data in the Feynmanx range 0.0<xF(ϕ)<0.4 allows the determination of the strange valence quark distribution inK mesons and the strange sea quark distribution in π mesons, which appears to be harder than the light sea quark distribution. The comparison also shows that a significant part of inclusive ϕ production is due to the OZI allowed fusion of strange quarks, while the OZI inhibited fusion diagrams are strongly suppressed.
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