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arXiv · 1212.6075

$ϕ$ photoprodution with coupled-channel effects

Hui-Young Ryu·Alexander I. Titov·Atsushi Hosaka·Hyun-Chul Kim
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Abstract

We study phi photoproduction with various hadronic rescattering contributions included, in addition to the Pomeron and pseudoscalar meson-exchange diagrams. We find that the hadronic box diagrams can explain the recent experimental data in the vicinity of the threshold. In particular, the bump-like structure at the photon energy E_gamma \approx 2.3$ GeV is well explained by the K Lambda(1520) rescattering amplitude in the intermediate state, which is the dominant contribution among other hadronic contributions. We also find that the hadronic box diagrams are consistent with the observed spin-density matrix elements near the threshold region.

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Hui-Young Ryu, Alexander I. Titov, Atsushi Hosaka, Hyun-Chul Kim. 2012-12-25. $ϕ$ photoprodution with coupled-channel effects. https://doi.org/10.1093/ptep%2Fptu004

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