{"paper":{"title":"The discrete contribution to $\\psi^{\\prime}\\to J/\\psi+\\gamma\\gamma$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Joan Soto, Xiao-Rui Lu, Yangheng Zheng, Zhi-Guo He","submitted_at":"2010-12-14T17:36:29Z","abstract_excerpt":"The decay mode $\\psi(2S)\\to J/\\psi+\\gamma\\gamma$ is proposed in order to experimentally identify the effects of the coupling of charmonium states to the continuum $D\\bar D$ states. To have a better understanding of such a two-photon decay process, in this work we restrict ourselves to investigate the contribution of the discrete part, in which the photons are mainly produced via the intermediate states $\\chi_{cJ}(nP)$. Besides calculating the resonance contributions of $\\chi_{cJ}(1P)\\; (J=0,1,2)$, we also take into account the contributions of the higher excited states $\\chi_{cJ}(2P)$ and the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1012.3101","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"}