{"paper":{"title":"Search for double charmonium decays of the P-wave spin-triplet bottomonium states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ph"],"primary_cat":"hep-ex","authors_text":"The Belle Collaboration","submitted_at":"2012-03-02T04:39:11Z","abstract_excerpt":"Using a sample of 158 million $\\Upsilon(2S)$ events collected with the Belle detector, we search for the first time for double charmonium decays of the $P$-wave spin-triplet bottomonium states ($\\Upsilon(2S) \\to \\gamma \\chi_{bJ}$, $\\chi_{bJ} \\to \\jpsi \\jpsi$, $\\jpsi \\psp$, $\\psp \\psp$ for J=0, 1, and 2). No significant $\\chi_{bJ}$ signal is observed in the double charmonium mass spectra, and we obtain the following upper limits, $\\BR(\\chi_{bJ} \\to \\jpsi \\jpsi)<7.1\\times 10^{-5}$, $2.7\\times 10^{-5}$, $4.5\\times 10^{-5}$, $\\BR(\\chi_{bJ} \\to \\jpsi \\psp)<1.2\\times 10^{-4}$, $1.7\\times 10^{-5}$, $"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1203.0368","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"}