New data on $\vec{\gamma }\vec{p}\to \eta p$ with polarized photons and protons and their implications for $N^{\ast }\to N\eta$ decays

J. Müller, J. Hartmann, M. Grüner +86

The polarization observables $T,E,P,H$, and $G$ in photoproduction of $\eta$ mesons off protons are measured for photon energies from threshold to $W=2400$MeV ($T$), 2280 MeV ($E…