{"paper":{"title":"Four-Quark States and Nucleon-Antinucleon Annihilation within the Quark Model with Instanton Induced Interaction","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. E. Dorokhov, N. I. Kochelev, Yu. A. Zubov","submitted_at":"1994-12-28T12:03:21Z","abstract_excerpt":"The spectrum of $q^2\\bar q^2, J^p=0^+,2^+$ mesons is discussed. We have shown that due to instanton - induced forces the physical states are strong mixtures of the $SU_f(3)$ group basis states. The cross-sections for annihilation of the $N\\bar N$ system into $(q^2\\bar q^2)(q\\bar q)$ mesons are obtained. The $a_0(980)$ meson is considered as $q^2\\bar q^2$ meson consisting of $9_f$ and $36_f$ plets. The branchings are also predicted for the cross-sections for production of the $a_0(980)$ and tensor $q^2\\bar q^2$ mesons in $N\\bar N$ annihilation."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9412378","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"}