{"paper":{"title":"$B^*B\\pi(\\gamma)$ couplings and $D^*\\rar D\\pi(\\gamma) $-decays within a $1/M$-expansion in $full$ QCD","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"H.G Dosch (Univ-Heidelberg), S.Narison (Univ-Montpellier II)","submitted_at":"1995-10-03T12:05:07Z","abstract_excerpt":"To leading order in $\\alpha_s$, we evaluate the leading and non-leading $1/M_b$ corrections to the $B^*B\\pi$ and $B^*B\\gamma$ couplings using QCD spectral moment sum rules in the full theory. We find that, for large $M_b$ and contrary to the heavy-to-light $B\\rar \\pi(\\rho) l\\bar \\nu$ form factors, which are dominated by the $soft$ light quark vacuum condensate, these couplings are governed by the $hard$ perturbative graph, like other heavy-to-heavy transitions. We also find that for the $B^{*}\\rar B\\gamma$, the $1/M_b$ correction is mainly due to the perturbative and light quark condensate con"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9510212","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/hep-ph/9510212/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"}