{"paper":{"title":"The $a_0(980)$ physics in semileptonic $D^0$ and $D^+$ decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-th"],"primary_cat":"hep-ph","authors_text":"A.V. Kiselev, N.N. Achasov","submitted_at":"2018-05-24T16:18:41Z","abstract_excerpt":"The decays $D^0\\to d\\bar u\\,e^+\\nu\\to a^-_0(980)\\, e^+\\nu\\to\\pi^-\\eta\\, e^+\\nu$ and $D^+\\to d\\bar d\\,e^+\\nu\\to a^0_0(980)\\, e^+\\nu\\to\\pi^0\\eta\\, e^+\\nu$ (and the charge conjugated ones) is the direct probe of the two-quark components in the $a^\\pm_0(980)$ and $a^0_0(980)$ wave functions. Recent BESIII experiment is the first step in experimental study of these decays. We present a possible variant of $\\eta\\pi$ invariant mass distribution when $a_0(980)$ has no $q\\bar q$ component at all."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1805.10145","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"}