{"paper":{"title":"The $\\sigma$ and $\\rho$ coupling constants for the charmed and beauty mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-lat","nucl-th"],"primary_cat":"hep-ph","authors_text":"Hee-Jin Kim, Hyun-Chul Kim","submitted_at":"2019-12-25T08:26:06Z","abstract_excerpt":"We investigate the $\\sigma$ and $\\rho$ coupling constants for the $DD$ and $D^*D^*$ interactions, based on correlated $2\\pi$ exchange in the $DD$ and $D^*D^*$ interactions. Starting from the $D\\bar{D}\\to \\pi\\pi$ and $D^*\\bar{D}^*\\to \\pi\\pi$ amplitudes derived in the pseudophysical region ($4m_\\pi^2\\le t \\le 52m_\\pi^2$) with the $S$- and $P$-wave $2\\pi$ correlations considered, we obtain the spectral functions for the $DD\\to DD$ and $D^*D^*\\to D^*D^*$ amplitude with correlated $S$- and $P$-wave $2\\pi$ exchanges. Using the pole approximation, we estimate the $DD\\sigma$, $DD\\rho$, $D^*D^*\\sigma$,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1912.11622","kind":"arxiv","version":6},"verdict":{"id":null,"model_set":{},"created_at":null,"strongest_claim":"","one_line_summary":"","pipeline_version":null,"weakest_assumption":"","pith_extraction_headline":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1912.11622/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}