η photoproduction in the resonance energy region
2007; Elsevier BV; Volume: 650; Issue: 2-3 Linguagem: Inglês
10.1016/j.physletb.2007.05.005
ISSN1873-2445
AutoresV. Shklyar, H. Lenske, U. Mosel,
Tópico(s)Nuclear physics research studies
ResumoThe $η$ 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 $\sqrt{s}$=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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