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We work at leading order in $\\alpha_s$, consider the contributions of higher dimension condensates and keep terms which are linear in the strange quark mass $m_s$. We find for the $(c\\bar{c}s\\bar{s})$ state a mass $m_Y=(4.65\\pm 0.10)$ GeV which is compatible with the experimental candidate Y(4660), while for the $(c\\bar{c}q\\bar{q})$ state we find a mass $m_Y=(4.49\\pm 0.11)$ GeV, which is h"},"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":"0804.4817","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-04-30T13:02:01Z","cross_cats_sorted":[],"title_canon_sha256":"1f50120df52b14bffb04773ba9b2a28d5867a769d186956edb678b9ccc1a2a04","abstract_canon_sha256":"03dd614f4538ad00a83753840168939e07680fedf0882dc8933095cf307f26ca"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:23:23.562245Z","signature_b64":"B/kZu8KlZLqzDUppOem/dQpF3TgTwkMEn9KQjJuBRK+kPW9tN/KyNMJG9oOYBoEgMpt4YklzbJndzLkCFkKzAg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d4a19ce00b329e0a33709cd027abd58c9b85ad65eaa121ce61253af84ac4995e","last_reissued_at":"2026-05-18T04:23:23.561526Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:23:23.561526Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"QCD sum rules study of the $J^{PC}=1^{--}$ charmonium $Y$ mesons","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. Nielsen, R.M. Albuquerque","submitted_at":"2008-04-30T13:02:01Z","abstract_excerpt":"We use QCD sum rules to test the nature of the recently observed mesons Y(4260), Y(4350) and Y(4660), assumed to be exotic four-quark $(c\\bar{c}q\\bar{q})$ or $(c\\bar{c}s\\bar{s})$ states with $J^{PC}=1^{--}$. We work at leading order in $\\alpha_s$, consider the contributions of higher dimension condensates and keep terms which are linear in the strange quark mass $m_s$. We find for the $(c\\bar{c}s\\bar{s})$ state a mass $m_Y=(4.65\\pm 0.10)$ GeV which is compatible with the experimental candidate Y(4660), while for the $(c\\bar{c}q\\bar{q})$ state we find a mass $m_Y=(4.49\\pm 0.11)$ GeV, which is h"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0804.4817","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"0804.4817","created_at":"2026-05-18T04:23:23.561655+00:00"},{"alias_kind":"arxiv_version","alias_value":"0804.4817v1","created_at":"2026-05-18T04:23:23.561655+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0804.4817","created_at":"2026-05-18T04:23:23.561655+00:00"},{"alias_kind":"pith_short_12","alias_value":"2SQZZYALGKPA","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"2SQZZYALGKPAUM3Q","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"2SQZZYAL","created_at":"2026-05-18T12:25:56.245647+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS","json":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS.json","graph_json":"https://pith.science/api/pith-number/2SQZZYALGKPAUM3QTTICPK6VRS/graph.json","events_json":"https://pith.science/api/pith-number/2SQZZYALGKPAUM3QTTICPK6VRS/events.json","paper":"https://pith.science/paper/2SQZZYAL"},"agent_actions":{"view_html":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS","download_json":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS.json","view_paper":"https://pith.science/paper/2SQZZYAL","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0804.4817&json=true","fetch_graph":"https://pith.science/api/pith-number/2SQZZYALGKPAUM3QTTICPK6VRS/graph.json","fetch_events":"https://pith.science/api/pith-number/2SQZZYALGKPAUM3QTTICPK6VRS/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS/action/timestamp_anchor","attest_storage":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS/action/storage_attestation","attest_author":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS/action/author_attestation","sign_citation":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS/action/citation_signature","submit_replication":"https://pith.science/pith/2SQZZYALGKPAUM3QTTICPK6VRS/action/replication_record"}},"created_at":"2026-05-18T04:23:23.561655+00:00","updated_at":"2026-05-18T04:23:23.561655+00:00"}