{"paper":{"title":"Radiative $h_{c/b}$ decays to $\\eta$ or $\\eta^\\prime$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Jian-Ping Dai, Ruilin Zhu","submitted_at":"2016-10-02T15:17:10Z","abstract_excerpt":"Motivated by recent measurements of the radiative decay rates of the \\emph{P}-wave spin singlet charmonium $h_c$ to the light meson $\\eta$ or $\\eta^\\prime$ by the BESIII Collaboration, we investigate the decay rates of these channels at order $\\alpha \\alpha_s^4$. The photon is radiated mainly from charm quark pairs in the lowest order Feynman diagrams, since the diagrams where a photon radiated from light quarks are suppressed by $\\alpha_s$ or the relative charm quark velocity $v$, due to Charge parity conservation. The form factors of two gluons to $\\eta$ or $\\eta^\\prime$ are employed, which "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.00288","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"}