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Study $ω$ and $ϕ$ photoproduction in the nucleon isotopic channels

Q. Zhao
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Abstract

We present results for the photoproduction of $ω$ and $ϕ$ meson in the nucleon isotopic channles. A recently developed quark model with an effective Lagrangian is employed to account for the non-diffractive {\it s}- and {\it u}-channel processes; the diffractive feature arising from the {\it natural} parity exchange is accounted for by the {\it t}-channel pomeron exchange, while the {\it unnatural} parity exchange is accounted for by the {\it t}-channel pion exchange. In the $ω$ production, the isotopic effects could provide more information concerning the search of "missing resonances", while in the $ϕ$ production, the isotopic effects could highlight non-diffractive resonance excitation mechanisms at large angles.

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Q. Zhao. 2002-02-07. Study $ω$ and $ϕ$ photoproduction in the nucleon isotopic channels. https://doi.org/10.1142/9789812777218_0064

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