{"paper":{"title":"Near-threshold $\\pi^-$ photoproduction on the deuteron","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A. E. Kudryavtsev, B. Oussena, B. Schr\\\"oder, B. Seitz, B. Strandberg, D. G. Middleton, D. I. Glazier, D. O'Donnell, E. J. Downie, F. Cividini, G. Feldman, G. V. O'Rielly, I. I. Strakovsky, J. Brudvik, J. R. M. Annand, K. England, K. G. Fissum, K. Hamilton, K. Hansen, L. Clark, L. Isaksson, L. S. Myers, M. A. Kovash, M. F. Preston, M. Lundin, M. Meshkian, M. Taragin, R. Al Jebali, S. Lipschutz, V. E. Tarasov, V. Lensky, W. J. Briscoe","submitted_at":"2018-12-07T13:28:40Z","abstract_excerpt":"The first experimental investigation of the near-threshold cross section for incoherent $\\pi^-$ photoproduction on the deuteron $\\gamma$ d -> $\\pi^-$ pp is presented. The experimental technique involved detection of the ~131 MeV gamma ray resulting from the radiative capture of photoproduced $\\pi^-$ in the target. The total cross section has been measured using an unpolarized tagged-photon beam, a liquid-deuterium target, and three very large NaI(Tl) spectrometers. The data are compared to theoretical models that give insight into the elementary reaction $\\gamma$ n -> $\\pi^-$ p and pion-nucleo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1812.03023","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1812.03023/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"}