η 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 S 11 ( 1650 ) and P 11 ( 1710 ) resonance excitations.

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