eta-photoproduction in the resonance energy region
Abstract
The η production in the nucleon resonance energy region is studied within the unitary coupled-channels effective Lagrangian approach of the Giessen model. We demonstrate that the second peak recently observed in the cross section of η photoproduction on the neutron at s=1.66 GeV can be explained in terms of coupled-channel effects due to S11(1650) and P11(1710) resonance excitations.
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