{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2000:EAE65JBBIJW2R5EITB7CKQMEVY","merge_version":"pith-open-graph-merge-v1","event_count":2,"valid_event_count":2,"invalid_event_count":0,"equivocation_count":0,"current":{"canonical_record":{"metadata":{"abstract_canon_sha256":"4c37adfe97c5630fd0c3e6ebe22eb7ebd9632652230822e0c4da4077d92c9fcb","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-08-31T14:01:49Z","title_canon_sha256":"221929132dcca7aa300021a688e52f0999d903d93934a7e319c669128c8ba684"},"schema_version":"1.0","source":{"id":"nucl-ex/0008017","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-ex/0008017","created_at":"2026-07-04T16:21:29Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-ex/0008017v1","created_at":"2026-07-04T16:21:29Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-ex/0008017","created_at":"2026-07-04T16:21:29Z"},{"alias_kind":"pith_short_12","alias_value":"EAE65JBBIJW2","created_at":"2026-07-04T16:21:29Z"},{"alias_kind":"pith_short_16","alias_value":"EAE65JBBIJW2R5EI","created_at":"2026-07-04T16:21:29Z"},{"alias_kind":"pith_short_8","alias_value":"EAE65JBB","created_at":"2026-07-04T16:21:29Z"}],"graph_snapshots":[{"event_id":"sha256:932b82f798b01973732ee7fe1870476cfe13f39b4f0a89b3de37d87d43e5a78d","target":"graph","created_at":"2026-07-04T16:21:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"graph_snapshot":{"author_claims":{"count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57","strong_count":0},"builder_version":"pith-number-builder-2026-05-17-v1","claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"formal_canon":{"evidence_count":0,"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"integrity":{"available":true,"clean":true,"detectors_run":[],"endpoint":"/pith/nucl-ex/0008017/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"The ratio of the total exclusive production cross sections for $\\eta\\prime$ and $\\eta$ mesons has been measured in the $pp$ reaction at $p_{beam}=3.67$ GeV/c. The observed $\\eta\\prime/\\eta$ ratio is $(0.83\\pm{0.11}^{+0.23}_{-0.18})\\times 10^{-2}$ from which the exclusive $\\eta\\prime$ meson production cross section is determined to be $(1.12\\pm{0.15}^{+0.42}_{-0.31})\\mu b$. Differential cross section distributions have been measured. Their shape is consistent with isotropic $\\eta\\prime$ meson production.","authors_text":"A. Brenschede, A. Grasso, A. Maggiora, A. Manara, A. Popov, DISTO Collaboration: F. Balestra, D. Panzieri, F. Brochard, F. Tosello, G.B. Pontecorvo, G. Piragino, G. Zosi, H.-W. Pfaff, I. Froehlich, I.V. Falomkin, J.-Cl. Faivre, J. Foryciarz, J. Ritman, L.C. Bland, L. Fava, L. Ferrero, M. Debowski, M. Dzemidzic, M. Maggiora, M.P. Bussa, P. Salabura, R. Bertini, R. Garfagnini, Seonho Choi, S.E. Vigdor, S. Heinz, V. Frolov, V. Tchalyshev, V.V. Ivanov, W. Kuehn, W.W. Jacobs, Y. Bedfer","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-ex","submitted_at":"2000-08-31T14:01:49Z","title":"Production of $\\eta\\prime$ Mesons in the $pp \\to pp\\eta\\prime$ Reaction at 3.67 GeV/c"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-ex/0008017","kind":"arxiv","version":1},"verdict":{"created_at":null,"id":null,"model_set":{},"one_line_summary":"","pipeline_version":null,"pith_extraction_headline":"","strongest_claim":"","weakest_assumption":""}},"verdict_id":null}}],"author_attestations":[],"timestamp_anchors":[],"storage_attestations":[],"citation_signatures":[],"replication_records":[],"corrections":[],"mirror_hints":[],"record_created":{"event_id":"sha256:c1a8b0b6a7b0e4094d01a38d63b1e5586f2fae680fc42bb05dadc784c6b62ce7","target":"record","created_at":"2026-07-04T16:21:29Z","signer":{"key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signer_id":"pith.science","signer_type":"pith_registry"},"payload":{"attestation_state":"computed","canonical_record":{"metadata":{"abstract_canon_sha256":"4c37adfe97c5630fd0c3e6ebe22eb7ebd9632652230822e0c4da4077d92c9fcb","cross_cats_sorted":[],"license":"","primary_cat":"nucl-ex","submitted_at":"2000-08-31T14:01:49Z","title_canon_sha256":"221929132dcca7aa300021a688e52f0999d903d93934a7e319c669128c8ba684"},"schema_version":"1.0","source":{"id":"nucl-ex/0008017","kind":"arxiv","version":1}},"canonical_sha256":"2009eea421426da8f488987e254184ae39e448c7df8febe72e60679760d89bec","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2009eea421426da8f488987e254184ae39e448c7df8febe72e60679760d89bec","first_computed_at":"2026-07-04T16:21:29.133685Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T16:21:29.133685Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"m7C1+B8T0mG4ynySTgExiHEUuyEVcPRLSIt5BxnqWcLTzqzFJF2OCM8PzxtuknsVnSF2fA6TkMBDrkcnvvtLDA==","signature_status":"signed_v1","signed_at":"2026-07-04T16:21:29.134100Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-ex/0008017","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:c1a8b0b6a7b0e4094d01a38d63b1e5586f2fae680fc42bb05dadc784c6b62ce7","sha256:932b82f798b01973732ee7fe1870476cfe13f39b4f0a89b3de37d87d43e5a78d"],"state_sha256":"6fe41cfd5be005c5d85920c51c7b8508bf03d186186bb2f11fbc3e2b96a96552"}