{"paper":{"title":"Abnormal isospin violation and $a_0 -f_0$ mixing in the $D_s^+ \\to \\pi^+ \\pi^0 a_0(980) (f_0(980))$ reactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"E. Oset, S. Sakai, W.H. Liang","submitted_at":"2017-07-07T15:42:45Z","abstract_excerpt":"We have chosen the reactions $D_s^+ \\to \\pi^+ \\pi^0 a_0(980) (f_0(980))$ investigating the isospin violating channel $D_s^+ \\to \\pi^+ \\pi^0 f_0(980)$. The reaction was chosen because by varying the $\\pi^0 a_0(980) (f_0(980))$ invariant mass one goes through the peak of a triangle singularity emerging from $D_s^+ \\to \\pi^+\\bar K^* K$, followed by $\\bar K^* \\to \\bar K \\pi^0$ and the further merging of $K \\bar K$ to produce the $a_0(980)$ or $f_0(980)$. We found that the amount of isospin violation had its peak precisely at the value of the $\\pi^0 a_0(980) (f_0(980))$ invariant mass where the sin"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1707.02236","kind":"arxiv","version":1},"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"}