{"paper":{"title":"$D^* D \\pi$ and $B^* B \\pi$ couplings from Dyson-Schwinger equations framework","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Kh\\'epani Raya, Yin-Zhen Xu","submitted_at":"2024-11-19T08:29:15Z","abstract_excerpt":"Employing a unified Dyson-Schwinger/Bethe-Salpeter equations approach, we calculate the strong decay couplings $D^* D \\pi$ and $B^* B \\pi$ within the so-called impulse-approximation in the moving frame. The $B^* B \\pi$ estimation is reported for the first time based on a Poincar\\'e invariant computation of the associated Bethe-Salpeter amplitudes. Our predictions yield $g_{D^* D \\pi}=16.22_{-0.01}^{+0.03}$ and $g_{B^* B \\pi}=40.09_{-1.37}^{+1.51}$, along with corresponding static strong couplings of $\\hat{g}_D=0.55_{-<0.01}^{+<0.01}$, $\\hat{g}_B=0.50_{-0.02}^{+0.02}$, which are consistent with"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2411.12327","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2411.12327/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"}