{"paper":{"title":"Relativistic corrections to $\\Upsilon$ exclusive decay into double $S-$wave charmonia","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Feng Feng, Wen-Long Sang, YU-Qi Chen","submitted_at":"2015-02-05T11:06:43Z","abstract_excerpt":"Within the framework of nonrelativisitic QCD factorization formalism, we present the next-to-leading-order relativistic corrections to $\\Upsilon$ exclusive decay into $\\eta_c$ plus $J/\\psi$. The double charmonia can be produced through several immediate channels, i.e. $\\Upsilon\\to g^*g^*g^*\\to \\eta_c+J/\\psi$, $\\Upsilon\\to g^*g^*\\gamma^*\\to \\eta_c+J/\\psi$, and $\\Upsilon\\to \\gamma^*\\to \\eta_c+J/\\psi$. The amplitudes of these three channels are obtained accurate up to ${\\cal O}(\\alpha_s^3 v^2)$, ${\\cal O}(\\alpha\\alpha_s^2 v^2)$, and ${\\cal O}(\\alpha\\alpha_s^2 v^2)$ respectively, where $v$ indicat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1502.01499","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"}