{"paper":{"title":"The N(1520) 3/2- helicity amplitudes from an energy-independent multipole analysis based on new polarization data on photoproduction of neutral pions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Berlin, A. Gridnev, A. K\\\"aser, A. Sarantsev, A. Thiel, A.V. Anisovich, A. Wilson, A. Winnebeck, B. Krusche, B. Roth, Ch. Funke, Ch. Hammann, Ch. Honisch, Ch. Schmidt, Ch. Wendel, C. Rosenbaum, D. Bayadilov, D. Elsner, D. Kaiser, D. Novinski, D. Piontek, D. Walther, E. Gutz, E. Klempt, F. Frommberger, F. Kalischewski, F. Klein, F. Messi, G. Reicherz, H. Dutz, H. Eberhardt, H. Kalinowsky, H. Schmieden, H. van Pee, I. Keshelashvili, I. Lopatin, J. Hannappel, J. Hartmann, J. Herick, J. M\\\"uller, K. Fornet-Ponse, K. Koop, K. Makonyi, K.-Th. Brinkmann, L. Witthauer, M. Becker, M. Bichow, M. Dieterle, M. Gottschall, M. Gr\\\"uner, M. Kube, M. Lang, M. Nanova, M. Urban, O. Jahn, Ph. Hoffmeister, Ph. Th\\\"amer, P. Klassen, R. Beck, R. Novotny, R. Schmitz, S. B\\\"ose, St. Friedrich, T. Jude, T. Rostomyan, T. Seifen, U. Thoma, U. Wiedner, V. Crede, V. Hannen, V. Metag, V. Nikonov, V. Sokhoyan, W. Hillert, W. Meyer, Y. Beloglazov, Y. Wunderlich","submitted_at":"2014-07-08T16:37:22Z","abstract_excerpt":"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."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1407.2163","kind":"arxiv","version":1},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"references":{"count":0,"sample":[],"resolved_work":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","internal_anchors":0},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"author_claims":{"count":0,"strong_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"builder_version":"pith-number-builder-2026-05-17-v1"}