{"paper":{"title":"Pionic deuterium","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.Gruber, A.Hirtl, D.Anagnostopoulos, D.Gotta, D. S.Covita, E.-O.Le Bigot, F.D.Amaro, H.Gorke, J. F.C.A.Veloso, J.M. F. dos Santos, J. Zmeskal, L.M. Simons, M.Nekipelov, M.Trassinelli, P.B\\\"uhler, Ph. Schmid, P. Indelicato, S. Schlesser, Th. Strauch","submitted_at":"2010-11-10T16:05:09Z","abstract_excerpt":"The strong interaction shift $\\epsilon$ and broadening {\\Gamma} in pionic deuterium have been determined in a high statistics study of the {\\pi}D(3p - 1s) X-ray transition using a high-resolution crystal spectrometer. The pionic deuterium shift will provide constraints for the pion-nucleon isospin scattering lengths extracted from measurements of shift and broadening in pionic hydrogen. The hadronic broadening is related to pion absorption and production at threshold. The results are \\epsilon = (-2356 {\\pm} 31)meV (repulsive) and {\\Gamma}1s = (1171+23/-49) meV yielding for the complex {\\pi}D s"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1011.2415","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"}