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

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

2001-02-12

arxiv.org/abs/nucl-th/0102025v2

Phys.Lett. B509 (2001) 231-238

Physics

Nuclear Physics

Nuclear Theory

4 eps figures, version accepted by Phys. Lett. B

Scientific paper

10.1016/S0370-2693(01)00432-4

We examine the non-diffractive mechanisms in the $\phi$ 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 $\gamma p\to \phi p$ and $\gamma n\to \phi n$, are investigated by comparing the cross sections and polarized beam asymmetries. Our result highlights an experimental means of studying non-diffractive mechanisms in $\phi$ meson photoproduction.

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