{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2008:4TR7ADNZKRM5ZTLNNITOLHACGX","short_pith_number":"pith:4TR7ADNZ","schema_version":"1.0","canonical_sha256":"e4e3f00db95459dccd6d6a26e59c0235e221b440fc4695da11f18d0adccbcc4e","source":{"kind":"arxiv","id":"0809.2153","version":1},"attestation_state":"computed","paper":{"title":"Study of psi' and chi_c decays as feed-down sources of J/psi hadro-production","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"C. Lourenco, H.K. Woehri, J. Seixas, P. Faccioli","submitted_at":"2008-09-12T09:48:46Z","abstract_excerpt":"The interpretation of the J/psi suppression patterns observed in nuclear collisions, at CERN and RHIC, as a signature of the formation of a deconfined phase of QCD matter, requires knowing which fractions of the measured J/psi yields, in pp collisions, are due to decays of heavier charmonium states. From a detailed analysis of the available mid-rapidity charmonium hadro-production cross sections, or their ratios, we determine that the J/psi feed-down contributions from psi' and chi_c decays are, respectively, (8.1 +/- 0.3) % and (25 +/- 5) %. These proton-proton values are derived from global "},"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":"0809.2153","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2008-09-12T09:48:46Z","cross_cats_sorted":[],"title_canon_sha256":"4d07412240d2fa569f5d8597676e14ae82cdc4bcbab4f3eb8356ec6f36e33b03","abstract_canon_sha256":"a8b06b3bae97094039eb33a9a359cef534264f2d9e637fbd8911e88919f9c808"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:26:21.105981Z","signature_b64":"w9EJQCOwuby7XrD3aMkm26/ez9QHSzCff1l9hMQDYqWeyhGRty65DWDiD+lYYxJpt9aOVwv7AayW8iUEScDODA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"e4e3f00db95459dccd6d6a26e59c0235e221b440fc4695da11f18d0adccbcc4e","last_reissued_at":"2026-05-18T04:26:21.105549Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:26:21.105549Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Study of psi' and chi_c decays as feed-down sources of J/psi hadro-production","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"C. Lourenco, H.K. Woehri, J. Seixas, P. Faccioli","submitted_at":"2008-09-12T09:48:46Z","abstract_excerpt":"The interpretation of the J/psi suppression patterns observed in nuclear collisions, at CERN and RHIC, as a signature of the formation of a deconfined phase of QCD matter, requires knowing which fractions of the measured J/psi yields, in pp collisions, are due to decays of heavier charmonium states. From a detailed analysis of the available mid-rapidity charmonium hadro-production cross sections, or their ratios, we determine that the J/psi feed-down contributions from psi' and chi_c decays are, respectively, (8.1 +/- 0.3) % and (25 +/- 5) %. These proton-proton values are derived from global "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0809.2153","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":"0809.2153","created_at":"2026-05-18T04:26:21.105622+00:00"},{"alias_kind":"arxiv_version","alias_value":"0809.2153v1","created_at":"2026-05-18T04:26:21.105622+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0809.2153","created_at":"2026-05-18T04:26:21.105622+00:00"},{"alias_kind":"pith_short_12","alias_value":"4TR7ADNZKRM5","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_16","alias_value":"4TR7ADNZKRM5ZTLN","created_at":"2026-05-18T12:25:56.245647+00:00"},{"alias_kind":"pith_short_8","alias_value":"4TR7ADNZ","created_at":"2026-05-18T12:25:56.245647+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":1,"internal_anchor_count":1,"sample":[{"citing_arxiv_id":"2604.00618","citing_title":"Absorption of 1$P$-wave heavy charmonium $\\chi_{c1}(1P)$ in nuclei","ref_index":23,"is_internal_anchor":true}]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX","json":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX.json","graph_json":"https://pith.science/api/pith-number/4TR7ADNZKRM5ZTLNNITOLHACGX/graph.json","events_json":"https://pith.science/api/pith-number/4TR7ADNZKRM5ZTLNNITOLHACGX/events.json","paper":"https://pith.science/paper/4TR7ADNZ"},"agent_actions":{"view_html":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX","download_json":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX.json","view_paper":"https://pith.science/paper/4TR7ADNZ","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=0809.2153&json=true","fetch_graph":"https://pith.science/api/pith-number/4TR7ADNZKRM5ZTLNNITOLHACGX/graph.json","fetch_events":"https://pith.science/api/pith-number/4TR7ADNZKRM5ZTLNNITOLHACGX/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX/action/timestamp_anchor","attest_storage":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX/action/storage_attestation","attest_author":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX/action/author_attestation","sign_citation":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX/action/citation_signature","submit_replication":"https://pith.science/pith/4TR7ADNZKRM5ZTLNNITOLHACGX/action/replication_record"}},"created_at":"2026-05-18T04:26:21.105622+00:00","updated_at":"2026-05-18T04:26:21.105622+00:00"}