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The resulting values of the coupling constants are $g_{D^*D\\pi}= 12.5\\pm 1$ and $g_{B^*B\\pi}= 29\\pm 3 $. From this we predict the partial width $ \\Gamma (D^{*+} \\ra D^0 \\pi^+ )=32 \\pm 5~ keV $. We also discuss the soft-pion limit of the sum rules which is equivalent to the external axial field approach employed in earlier ca"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"hep-ph/9410280","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1994-10-13T20:48:54Z","cross_cats_sorted":[],"title_canon_sha256":"5ef4a8b394085ee8b42bc1c82f78bf51f31b02d6dd281c92d6406a4289ea6c18","abstract_canon_sha256":"3ab198a0d30895398e16c233869497895e9fd52fa850ed39361b8512a0041492"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:37:13.104035Z","signature_b64":"3CZB4yl22cRHNXOBt5inPsbtIMrXb3DWMECL6bwbPt3o3TOYVT6JOQi3LWdUa8Hz1uGe6Y9uaQqj57IMmBWPAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a0215b651cc2fb25c5e02013bc38ec182d1b6dba75cdc440e0f0af218915455d","last_reissued_at":"2026-05-18T02:37:13.103474Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:37:13.103474Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"$D^*D\\pi$ and $B^*B\\pi$ couplings in QCD","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"A. Khodjamirian, R. R\\\"uckl, V.M. Belyaev, V.M. Braun","submitted_at":"1994-10-13T20:48:54Z","abstract_excerpt":"We calculate the $D^*D\\pi$ and $B^*B\\pi$ couplings using QCD sum rules on the light-cone. In this approach, the large-distance dynamics is incorporated in a set of pion wave functions. We take into account two-particle and three-particle wave functions of twist 2, 3 and 4. The resulting values of the coupling constants are $g_{D^*D\\pi}= 12.5\\pm 1$ and $g_{B^*B\\pi}= 29\\pm 3 $. From this we predict the partial width $ \\Gamma (D^{*+} \\ra D^0 \\pi^+ )=32 \\pm 5~ keV $. 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