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Non-diffractive mechanisms in the $ϕ$ meson photoproduction on nucleons

Qiang Zhao·B. Saghai·J. S. Al-Khalili
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Abstract

We examine the non-diffractive mechanisms in the $ϕ$ meson photoproduction from threshold up to a few GeV using an effective Lagrangian in a constituent quark model. The new data from CLAS at large angles can be consistently accounted for in terms of {\it s}- and {\it u}-channel processes. Isotopic effects arising from the reactions $γp\to ϕp$ and $γn\to ϕn$, are investigated by comparing the cross sections and polarized beam asymmetries. Our result highlights an experimental means of studying non-diffractive mechanisms in $ϕ$ meson photoproduction.

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Qiang Zhao, B. Saghai, J. S. Al-Khalili. 2001-03-24. Non-diffractive mechanisms in the $ϕ$ meson photoproduction on nucleons. https://doi.org/10.1016/s0370-2693(01)00432-4

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