{"paper":{"title":"$1^{-+}$ Hybrid in $J/\\psi$ Radiative Decays from Lattice QCD","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-ph"],"primary_cat":"hep-lat","authors_text":"Chunjiang Shi, Feiyu Chen, Ming Gong, Wei Sun, Xiangyu Jiang, Ying Chen, Zhaofeng Liu","submitted_at":"2022-07-11T08:16:42Z","abstract_excerpt":"We present the first theoretical prediction of the production rate of $1^{-+}$ light hybrid meson $\\eta_1$ in $J/\\psi$ radiative decays. In the $N_f=2$ lattice QCD formalism with the pion mass $m_\\pi\\approx 350$ MeV, the related electromagnetic multipole form factors are extracted from the three-point functions that involve necessarily quark annihilation diagrams, which are calculated through the distillation method. The partial width of $J/\\psi\\to \\gamma \\eta_1$ is determined to be $2.29(77)~\\mathrm{eV}$ at the $\\eta_1$ mass $m_{\\eta_1}=2.23(4)$ GeV. If $\\eta_1$ corresponds to the recently ob"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2207.04694","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2207.04694/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"}