{"paper":{"title":"Hidden charmonium decays of spin-2 partner of $X(3872)$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gang Li, Jiajun Wu, Qi Wu, Shidong Liu, Yuanxin Zheng, Zuxin Cai","submitted_at":"2024-01-06T13:56:49Z","abstract_excerpt":"The Belle collaboration recently reported a promising candidate for the spin-2 $D^*\\bar{D}^*$ partner of the $X(3872)$, called the $X_2$ for short, having a mass of $(4014.3 \\pm 4.0 \\pm 1.5)~\\mathrm{MeV}$ and a width of $(4 \\pm 11 \\pm 6)~\\mathrm{MeV} $. Assuming the $X_2$ as a pure molecule of the $D^*\\bar{D}^*$, we calculated in detail the hidden charmonium decays of the $X_2 \\to J/\\psi V$ and $X_2\\to\\eta_cP$ via the intermediate meson loops, where $V = \\rho^0\\,,\\omega$ and $P= \\pi^0\\,,\\eta\\,,\\eta'$. The results indicate that the decay widths are strongly dependent on the $X_2$ mass. At prese"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2401.03219","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2401.03219/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}