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$ω$-Meson Photoproduction on Nucleons In the Near Threshold Region

H. Babacan·T. Babacan·A. Gokalp·O. Yilmaz
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Abstract

The $ω$-meson photoproduction, $γ+p\to p+ω$, is studied in the framework of a model, containing $π$-meson exchange in t-channel and nucleon-exchange in s- and u-channels. Considering both $ωNN$-coupling constants in the region of time-like meson four momenta as the free parameters, we find different sets of solutions for these constants from the existing data on the t-dependence of the differential cross sections, $dσ(γ+p\to p+ω)/dt$, in the near threshold region $E_γ\leq 2$ GeV. These sets of $ωNN$-coupling constants, corresponding to destructive and constructive $π\bigotimes N$-interference contributions to $dσ/dt$ can be well distinguished by measurements of beam asymmetry, induced by linear photon polarization.

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H. Babacan, T. Babacan, A. Gokalp, O. Yilmaz. 2001-08-13. $ω$-Meson Photoproduction on Nucleons In the Near Threshold Region. https://arxiv.org/abs/nucl-th/0108027

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