eta-photoproduction in the resonance energy region

Details eta-photoproduction in the resonance energy region eta-photoproduction in the resonance energy region

2006-11-10

arxiv.org/abs/nucl-th/0611036v2

Phys.Lett.B650:172-178,2007

Physics

Nuclear Physics

Nuclear Theory

Scientific paper

10.1016/j.physletb.2007.05.005

The $\eta$ 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 $\eta$ photoproduction on the neutron at $\sqrt{s}$=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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