The N(1520) 3/2- helicity amplitudes from an energy-independent   multipole analysis based on new polarization data on photoproduction of   neutral pions
  New data on the polarization observables T, P, and H for the reaction $\gamma p \to p\pi^0$ are reported. The results are extracted from azimuthal asymmetries when a transversely polarized butanol target and a linearly polarized photon beam are used. The data were taken at the Bonn electron stretcher accelerator ELSA using the CBELSA/TAPS detector. These and earlier data are used to perform a truncated energy-independent partial wave analysis in sliced-energy bins. This energy-independent analysis is compared to the results from energy-dependent partial wave analyses. 
J. Hartmann, H. Dutz, A.V. Anisovich, D. Bayadilov, R. Beck, M.   Becker, Y. Beloglazov, A. Berlin, M. Bichow, S. B\"ose, K....
nucl-ex