{"paper":{"title":"Isospin-1/2 $D\\pi$ scattering and the lightest $D_0^\\ast$ resonance from lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-lat","authors_text":"Christopher E. Thomas, David J. Wilson, David Tims, Luke Gayer, Nicolas Lang, Sin\\'ead M. Ryan","submitted_at":"2021-02-09T17:45:20Z","abstract_excerpt":"Isospin-1/2 $D\\pi$ scattering amplitudes are computed using lattice QCD, working in a single volume of approximately $(3.6\\; \\mathrm{fm})^3$ and with a light quark mass corresponding to $m_\\pi\\approx239$ MeV. The spectrum of the elastic $D\\pi$ energy region is computed yielding 20 energy levels. Using the L\\\"uscher finite-volume quantisation condition, these energies are translated into constraints on the infinite-volume scattering amplitudes and hence enable us to map out the energy dependence of elastic $D\\pi$ scattering. By analytically continuing a range of scattering amplitudes, a $D_0^\\a"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2102.04973","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/2102.04973/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"}