{"paper":{"title":"The OLYMPUS Experiment","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["nucl-ex"],"primary_cat":"physics.ins-det","authors_text":"A. Avetisyan, A. Izotov, A. Kiselev, A. Krivshich, A. Movsisyan, A. Schmidt, A. Thiel, A. Winnebeck, B. Buck, B. Gl\\\"aser, B. Seitz, B.S. Henderson, Ch. Funke, C. O'Connor, C. Vidal, D. Bayadilov, D. Eversheim, D. Khaneft, D.K. Hasell, D. Lenz, D. Rodr\\'iguez Pi\\~neiro, D. Veretennikov, E. Cisbani, F. Brinker, F. Maas, G. Ciullo, G. Elbakian, G. Gavrilov, G. Karyan, G. Rosner, H. Marukyan, H. Vardanyan, I. Lehmann, J. Bessuille, J.C. Bernauer, J. Diefenbach, J. Hauschildt, J. Kelsey, J.R. Calarco, K. Dow, L.D. Ice, M. Contalbrigo, M. Kohl, M. Murray, M. Statera, N. Akopov, N. D'Ascenzo, N. G\\\"orrissen, O. Ates, O. Miklukho, Ph. Hoffmeister, P. Klassen, P. Lenisa, R. Alarcon, R. Beck, R. De Leo, R. Kaiser, R.L. Russell, R. Milner, R. Perez Benito, R. Perrino, R.P. Redwine, S. Belostotski, S. Frullani, S. Lumsden, T.W. Donnelly, U. Schneekloth, V.A. Andreev, V. Carassiti, V. Yeganov, Y. Holler, Y. Ma, Y. Naryshkin","submitted_at":"2013-12-05T23:07:39Z","abstract_excerpt":"The OLYMPUS experiment was designed to measure the ratio between the positron-proton and electron-proton elastic scattering cross sections, with the goal of determining the contribution of two-photon exchange to the elastic cross section. Two-photon exchange might resolve the discrepancy between measurements of the proton form factor ratio, $\\mu_p G^p_E/G^p_M$, made using polarization techniques and those made in unpolarized experiments. OLYMPUS operated on the DORIS storage ring at DESY, alternating between 2.01~GeV electron and positron beams incident on an internal hydrogen gas target. The "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.1730","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"}