{"paper":{"title":"Study of the p p -> p p pi+ pi- Reaction in the Low-Energy Tail of the Roper Resonance","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. Johansson, A. Kupsc, A. Sukhanov, A. Turowiecki, B. Hoistad, B. Morosov, C. Ekstrom, G.J. Wagner, H. Calen, H. Clement, J. Greiff, J. Johanson, J. Paetzold, J. Stepaniak, J. Zabierowski, J. Zlomanczuk, K. Fransson, K. Kilian, M. Bashkanov, M. Schepkin, P. Marciniewski, R. Bilger, R.J.M.Y. Ruber, S. Haggstrom, S. Kullander, T. Johansson, W. Brodowski, W. Oelert, W. Scobel, Z. Wilhelmi","submitted_at":"2003-01-31T15:58:49Z","abstract_excerpt":"Exclusive measurements of the p p -> p p pi+ pi- reaction have been carried out at Tp = 775 MeV at CELSIUS using the PROMICE/WASA setup. Together with data obtained at lower energy they point to a dominance of the Roper excitation in this process. From the observed interference of its decay routes N* -> N sigma and N* -> Delta pi -> N sigma their energy-dependent relative branching ratio is determined."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0301019","kind":"arxiv","version":3},"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/nucl-ex/0301019/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"}