{"paper":{"title":"Theoretical support for the $\\pi(1300)$ and the recently claimed $f_0(1790)$ as molecular resonances","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"nucl-th","authors_text":"A. Hosaka, A. Mart\\'inez Torres, D. Jido, K. P. Khemchandani","submitted_at":"2011-06-30T01:51:33Z","abstract_excerpt":"A study of three-pseudoscalar $\\pi K \\bar{K}$ and $\\pi \\pi \\eta$ coupled system is made by solving the Faddeev equations within an approach based on unitary chiral dynamics. A resonance with total isospin one and spin-parity $J^\\pi = 0^-$ is found with mass $\\sim$ 1400 MeV when the $K \\bar{K}$ system gets reorganized as the $f_0(980)$. This resonance is identified with the $\\pi (1300)$ listed by the Particle Data Group. Further, the two-body amplitude which describes the interaction between a $\\pi$ and the $f_0(980)$ is extracted from the study of the $\\pi K\\bar K$ and $\\pi\\pi\\eta$ system and "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1106.6101","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"}