Evidence for a narrow structure at W~1.68 GeV in eta photoproduction on the neutron

V. Kuznetsov, S. Churikova, G. Gervino +10

New results on quasi-free $\eta$ photoproduction on the neutron and proton bound in a deuteron target are presented. The $\gamma n\to \eta n$ quasi-free cross section reveals a bump-like struc…