N⁎ decays to Nω from new data on γp → ωp

Data on the reaction γp→ωpγp→ωp with ω→π0γω→π0γ, taken with unpolarized or polarized beams in combination with an unpolarized or polarized proton-target, were analyzed within the Bonn–Gatchina (BnGa) partial wave analysis. Differential cross sections, several spin density matrix elements, the beam asymmetry Σ, the normalized helicity difference E, and the correlation G between linear photon and longitudinal target polarization were included in a large data base on pion and photo-induced reactions. The data on ω   photoproduction are used to determine twelve N⁎→NωN⁎→Nω branching ratios; most of these are determined for the first time.