{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2014:WM3LGO4YZYSZLBOFJZNBUBH5KF","short_pith_number":"pith:WM3LGO4Y","schema_version":"1.0","canonical_sha256":"b336b33b98ce259585c54e5a1a04fd5158a518980f5484a20ea51a3c61457e9e","source":{"kind":"arxiv","id":"1411.5287","version":2},"attestation_state":"computed","paper":{"title":"$\\eta_c$ production at the LHC challenges nonrelativistic-QCD factorization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Bernd A. Kniehl, Mathias Butenschoen, Zhi-Guo He","submitted_at":"2014-11-19T16:44:31Z","abstract_excerpt":"We analyze the first measurement of $\\eta_c$ production, performed by the LHCb Collaboration, in the nonrelativistic-QCD (NRQCD) factorization framework at next-to-leading order (NLO) in the strong-coupling constant $\\alpha_s$ and the relative velocity $v$ of the bound quarks including the feeddown from $h_c$ mesons. Converting the long-distance matrix elements (LDMEs) extracted by various groups from $J/\\psi$ yield and polarization data to the $\\eta_c$ case using heavy-quark spin symmetry, we find that the resulting NLO NRQCD predictions greatly overshoot the LHCb data, while the color-single"},"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":"1411.5287","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2014-11-19T16:44:31Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"24c0775e8e8fcee9c26a25307c0c35072eb89cfdc865f62a0576a80dfb5b45df","abstract_canon_sha256":"97038aa00eed5331444fb2a66d301c2f9f78a009435b74724d64b01d9675e3d2"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:25:18.449694Z","signature_b64":"yVcawDDAvS6HK858djQMY9Wpb7D7E89vYgnBU5FFZHMLMz61KsrhQOMonFcpolsz7nxQA3iAUWtNHVlU4IHzDg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b336b33b98ce259585c54e5a1a04fd5158a518980f5484a20ea51a3c61457e9e","last_reissued_at":"2026-05-18T02:25:18.449340Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:25:18.449340Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"$\\eta_c$ production at the LHC challenges nonrelativistic-QCD factorization","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Bernd A. Kniehl, Mathias Butenschoen, Zhi-Guo He","submitted_at":"2014-11-19T16:44:31Z","abstract_excerpt":"We analyze the first measurement of $\\eta_c$ production, performed by the LHCb Collaboration, in the nonrelativistic-QCD (NRQCD) factorization framework at next-to-leading order (NLO) in the strong-coupling constant $\\alpha_s$ and the relative velocity $v$ of the bound quarks including the feeddown from $h_c$ mesons. Converting the long-distance matrix elements (LDMEs) extracted by various groups from $J/\\psi$ yield and polarization data to the $\\eta_c$ case using heavy-quark spin symmetry, we find that the resulting NLO NRQCD predictions greatly overshoot the LHCb data, while the color-single"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1411.5287","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":""},"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":"1411.5287","created_at":"2026-05-18T02:25:18.449398+00:00"},{"alias_kind":"arxiv_version","alias_value":"1411.5287v2","created_at":"2026-05-18T02:25:18.449398+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1411.5287","created_at":"2026-05-18T02:25:18.449398+00:00"},{"alias_kind":"pith_short_12","alias_value":"WM3LGO4YZYSZ","created_at":"2026-05-18T12:28:54.890064+00:00"},{"alias_kind":"pith_short_16","alias_value":"WM3LGO4YZYSZLBOF","created_at":"2026-05-18T12:28:54.890064+00:00"},{"alias_kind":"pith_short_8","alias_value":"WM3LGO4Y","created_at":"2026-05-18T12:28:54.890064+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/WM3LGO4YZYSZLBOFJZNBUBH5KF","json":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF.json","graph_json":"https://pith.science/api/pith-number/WM3LGO4YZYSZLBOFJZNBUBH5KF/graph.json","events_json":"https://pith.science/api/pith-number/WM3LGO4YZYSZLBOFJZNBUBH5KF/events.json","paper":"https://pith.science/paper/WM3LGO4Y"},"agent_actions":{"view_html":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF","download_json":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF.json","view_paper":"https://pith.science/paper/WM3LGO4Y","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1411.5287&json=true","fetch_graph":"https://pith.science/api/pith-number/WM3LGO4YZYSZLBOFJZNBUBH5KF/graph.json","fetch_events":"https://pith.science/api/pith-number/WM3LGO4YZYSZLBOFJZNBUBH5KF/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF/action/storage_attestation","attest_author":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF/action/author_attestation","sign_citation":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF/action/citation_signature","submit_replication":"https://pith.science/pith/WM3LGO4YZYSZLBOFJZNBUBH5KF/action/replication_record"}},"created_at":"2026-05-18T02:25:18.449398+00:00","updated_at":"2026-05-18T02:25:18.449398+00:00"}