{"paper":{"title":"Measurement of double polarisation asymmetries in $\\omega$-photoproduction","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Gridnev, A. Sarantsev, A. Thiel, A.V. Anisovich, A. Wilson, A. Winnebeck, B. Bantes, B. Krusche, Ch. Funke, Ch. Hammann, Ch. Honisch, Ch. Schmidt, Ch. Wendel, D. Bayadilov, D. Elsner, D. Kaiser, D. Piontek, D. Walther, E. Gutz, E. Klempt, F. Diez, F. Frommberger, F. Kalischewski, F. Klein, G. Reicherz, H. Dutz, H. Eberhardt, H. Kalinowsky, H. Schmieden, H. van Pee, I. Jaegle, I. Keshelashvili, I. Lopatin, J. Hannappel, J. Hartmann, J. Mueller, K. Fornet-Ponse, K. Koop, K. Makonyi, K.-Th. Brinkmann, M. Bichow, M. Gottschall, M. Gruener, M. Kube, M. Lang, M. Nanova, M. Urban, P. Drexler, Ph. Hoffmeister, R. Beck, R. Ewald, R. Novotny, R. Schmitz, S. Boese, S. Kammer, S. Reeve, S. Runkel, St. Friedrich, St. Schaepe, T. C. Jude, Th. Challand, T. Rostomyan, T. Seifen, U. Thoma, U. Wiedner, V. Crede, V. Kleber, V. Metag, V. Nikonov, V. Sokhoyan, V. Sumachev, W. Hillert, W. Meyer, Y. Maghrbi, Yu. Beloglazov","submitted_at":"2015-04-09T08:23:14Z","abstract_excerpt":"The first measurements of the beam-target-helicity-asymmetries $E$ and $G$ in the photoproduction of $\\omega$-mesons off protons at the CBELSA/TAPS experiment are reported. $E$ ($G$) was measured using circularly (linearly) polarised photons and a longitudinally polarised target. $E$ was measured over the photon energy range from close to threshold ($E_\\gamma = 1108$~MeV) to $E_\\gamma = 2300$~MeV and $G$ at a single energy interval of $1108 < E_\\gamma <1300$~MeV. Both measurements cover the full solid angle. The observables $E$ and $G$ are highly sensitive to the contribution of baryon resonan"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1504.02221","kind":"arxiv","version":2},"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"}