{"paper":{"title":"Electroproduction of Eta Mesons in the S11(1535) Resonance Region at High Momentum Transfer","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Ahmidouch, A. K. Opper, A. Uzzle, A. Villano, B. Moziak, B. Wojtsekhowski, C. Bertoncini, C. E. Keppel, C. Smith, C. Xu, D. Day, D. Dutta, D. Gaskell, D. G. Meekins, E. Hungerford, E. Schulte, E. Segbefia, F. R. Wesselmann, G. M. Huber, G. Niculescu, G. R. Smith, G. S. Adams, G. Warren, H. Breuer, H. C. Fenker, H. Mkrtchyan, H. Zhu, I. Niculescu, J. A. Dunne, J. Arrington, J. J. Kelly, J. Reinhold, J. Roche, K. Hafidi, K. Joo, L. Gan, L. Tang, L. Yuan, M. E. Christy, M. K. Jones, M. M. Dalton, M. Ungaro, M. Wang, N. Benmouna, N. El Khayari, N. Kalantarians, O. K. Baker, P. E. Bosted, P. E. Reimer, P. Markowitz, P. McKee, P. Stoler, R. Asaturyan, R. Ent, R. J. Holt, S. A. Wood, S. Danagoulian, S. E. Rock, S. H. Connell, S. Malace, S. Vidakovic, T. Angelescu, T. Dodario, T. Horn, T. Navasardyan, T. Ostapenko, V. Kubarovsky, V. Tadevosyan, V. Tvaskis, V. V. Frolov, W. F. Vulcan, W. Hinton, W. U. Boeglin, X. Jiang, X. Zheng, Y. Cui, Y. Li, Y. Liang","submitted_at":"2008-04-22T15:33:37Z","abstract_excerpt":"The differential cross-section for the process p(e,e'p)eta has been measured at Q2 ~ 5.7 and 7.0 (GeV/c)2 for centre-of-mass energies from threshold to 1.8 GeV, encompassing the S11(1535) resonance, which dominates the channel. This is the highest momentum transfer measurement of this exclusive process to date. The helicity-conserving transition amplitude A_1/2, for the production of the S11(1535) resonance, is extracted from the data. Within the limited Q2 now measured, this quantity appears to begin scaling as 1/Q3 - a predicted, but not definitive, signal of the dominance of perturbative QC"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.3509","kind":"arxiv","version":5},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/0804.3509/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}