Rescattering effects in coherent eta-photoproduction on the deuteron
Abstract
Rescattering effects in coherent eta photoproduction on the deuteron are studied in the region of the S11(1535) resonance. For the elementary reaction mechanism on the nucleon, an effective isobar model with inclusion of resonances and Born terms is used. The resonance parameters are fixed by considering pion photoproduction only. For the coherent eta production on the deuteron we have considered the impulse approximation taking into account the P11(1440), D13(1520), and S11(1535) resonances, rescattering, and meson exchange currents. For the rescattering mechanism a coupled channel model including the dominant S11(1535) resonance is used.
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