Φ photoproduction near the threshold energy

초록

In the present talk, we review a recent work on photoproduction, based on a coupled- channel formalism. We take into account several hadronic rescattering contributions, in ad- dition to the Pomeron and pseudoscalar meson-exchange. The hadronic rescattering eects can explain the recent experimental data in the vicinity of the threshold. In particular, the bump-like structure at the photon energy E 2:3 GeV is described very well by the K(1520) rescattering amplitude in the intermediate state. We discuss also the contribu- tions of hadronic rescattering diagrams to the observed spin-density matrix elements near the threshold region.