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We consider the contributions of condensates up to dimension eight, we work at leading order in $\\alpha_s$ and we keep terms which are linear in the strange quark mass $m_s$. We also consider a molecular $D^{*}\\bar{D}^{*}$ current and we obtain $m_{D^*{D}^*}=(4.13\\pm 0.10)$, around 200 MeV above the mass of the Y(393"},"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":"0903.5540","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2009-03-31T19:03:52Z","cross_cats_sorted":[],"title_canon_sha256":"4cd75498e19fac99e19e94e411a32cd0d1aaf1b5899a431c8598f8263f9f1be3","abstract_canon_sha256":"bdee2bd42d65ed937923275ade34901dcd5e0c59d5480098d7a6b0a80d28e029"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:14:08.533292Z","signature_b64":"+VcCZNaDd49ItpqjAKXRMgZltwZbRNLxddHKlgWNy6hS8XqnyNNXzwZdlN8TOar5meD5zTYu7v7eEJVE43HkCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a9e8a7d5280c795e749e259f4301d6a1e844c074ad6ab8e72e2045755d3a916b","last_reissued_at":"2026-05-18T02:14:08.532679Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:14:08.532679Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"A QCD sum rule calculation for the Y(4140) narrow structure","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Marina Nielsen, Mirian E. 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