{"paper":{"title":"Radiative Decays of Heavy Mesons and the Determination of the Strong g-Coupling","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Paul Singer","submitted_at":"1999-11-01T11:05:37Z","abstract_excerpt":"The strong g-coupling characterizes the interaction of heavy mesons with pions in typical vertices $H^*H\\pi$, $H^*H^*\\pi$, where $(H^*;H)$ stands for vector and pseudoscalar $(B^*;B)$ or $(D^*;D)$ heavy mesons. Its estimation by different theoretical methods has led to a wide range of possible values. We describe a new approach to the determination of g, which exploits the rare radiative decays $B^*\\to B\\gamma\\gamma$ and $D^*\\to D\\gamma\\gamma$. It is shown that the branching ratio of $D^*\\to D\\gamma\\gamma$ can be expressed as a function of a single unknown $g$ and we calculate it to be in the "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9910558","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"}