{"paper":{"title":"The effect of multi-channel pion-pion scattering in decays of the $\\Upsilon$-family mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. Nagy, P. Bydzovsky, R. Kaminski, T. Gutsche, V. E. Lyubovitskij, Yu. S. Surovtsev","submitted_at":"2014-10-13T13:25:56Z","abstract_excerpt":"The effect of isoscalar S-wave multi-channel pion-pion scattering ($\\pi\\pi\\to\\pi\\pi,K\\bar{K},\\eta\\eta$) is considered in the analysis of data on decays of the $\\Upsilon$-meson family -- $\\Upsilon(2S)\\to\\Upsilon(1S)\\pi\\pi$, $\\Upsilon(3S)\\to\\Upsilon(1S)\\pi\\pi$ and $\\Upsilon(3S)\\to\\Upsilon(2S)\\pi\\pi$. The analysis, which aims at studying the scalar mesons, is performed jointly considering the multi-channel pion-pion scattering, which is described in our model-independent approach based on analyticity and unitarity and using an uniformizing variable method, and the charmonium decay processes $J/\\p"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1410.3300","kind":"arxiv","version":1},"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"}