{"paper":{"title":"Search for missing $\\psi(4S)$ in the $e^+e^-\\to \\pi^+\\pi^-\\psi(2S)$ process","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Dian-Yong Chen, Takayuki Matsuki, Xiang Liu","submitted_at":"2015-09-02T15:16:33Z","abstract_excerpt":"A detailed analysis to find a missing $\\psi(4S)$ is made by utilizing the recent precise mesurements of the cross section for the process $e^+e^-\\to \\psi(2S)\\pi^+\\pi^-$ by Belle. Assuming three resonances $Y(4360)$, $Y(4660)$, and $\\psi(4S)$ to fit the data, we obtain the resonance parameters for $\\psi(4S)$ as $m=4243$ MeV and $\\Gamma=16 \\pm 31$ MeV showing a narrow state as predicted before. A combined fit to the data $e^+ e^- \\to \\psi(2S) \\pi^+ \\pi^-, \\ h_c \\pi^+ \\pi^-$, and $\\chi_{c0} \\omega$ is also performed to obtain the similar resonance parameters of $\\psi(4S)$. The upper limit of the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1509.00736","kind":"arxiv","version":3},"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"}