{"paper":{"title":"Reaction $e^+e^-\\to\\bar DD$ and $\\psi'$ mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Limphirat, K. Khosonthongkee, W. Sreethawong, Y. Yan","submitted_at":"2013-06-06T08:32:45Z","abstract_excerpt":"We study the reaction $e^+e^-\\to\\bar DD$ near threshold in the $^3P_0$ non-relativistic quark model, including as intermediate states the $J/\\psi$, $\\psi(2S)$, $\\psi(3770)$ and $\\psi(4040)$ mesons. The work reveals that experimental data strongly favor one of the two $\\psi(2S)-\\psi(3770)$ mixing angles derived by fitting to the $e^-e^+$ partial decay widths of the $\\psi(2S)$ and $\\psi(3770)$ mesons. The meson $X(3940)$ as well as the resonance around 3.9 GeV observed by Belle and BaBar Collaborations in the reaction $e^+e^-\\rightarrow \\bar DD$ is unlikely to be a $c\\bar c$ $I^G(J^{PC})=0^-(1^{"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1306.1337","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"}