{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:1996:Y33H4HT7GPN5IEPCPMIEJNILX2","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":"1c5251c25050c5e541b9b5dc63c857d934a56f9d7b9d92509f8efc6ff2c8361e","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-07-16T02:51:07Z","title_canon_sha256":"46bc3291d6f5b9826c2820563865af915cc7dfe2c3ceb24dc218c9313abb01b3"},"schema_version":"1.0","source":{"id":"nucl-th/9607026","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"nucl-th/9607026","created_at":"2026-07-04T15:24:05Z"},{"alias_kind":"arxiv_version","alias_value":"nucl-th/9607026v1","created_at":"2026-07-04T15:24:05Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.nucl-th/9607026","created_at":"2026-07-04T15:24:05Z"},{"alias_kind":"pith_short_12","alias_value":"Y33H4HT7GPN5","created_at":"2026-07-04T15:24:05Z"},{"alias_kind":"pith_short_16","alias_value":"Y33H4HT7GPN5IEPC","created_at":"2026-07-04T15:24:05Z"},{"alias_kind":"pith_short_8","alias_value":"Y33H4HT7","created_at":"2026-07-04T15:24:05Z"}],"graph_snapshots":[{"event_id":"sha256:b952830f06bdebfb06fed468e6f8bb6d594ba5800707aaa03be70d54b44db46e","target":"graph","created_at":"2026-07-04T15:24:05Z","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-th/9607026/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Short range meson-exchange mechanisms such as $\\rho\\to\\omega\\pi^0$ contribute significantly to the amplitude for $pp\\rightarrow pp\\pi^0$ near threshold in addition to pion rescattering. The uncertainty of the latter contribution, which depends on poorly determined parameters, is estimated. Allowing for this uncertainty and taking the short range meson-exchange contributions into account makes it possible to reproduce the measured cross section.","authors_text":"D.O. Riska, G.A. Miller, U. van Kolck","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"1996-07-16T02:51:07Z","title":"Meson Exchange and Pion Rescattering Contributions to the Cross Section for $pp\\to pp\\pi^0$"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"nucl-th/9607026","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":"sha256:81b66621edcf6e5492806907bd6f823ca234b0e9affda4433922270dc1fb256c","target":"record","created_at":"2026-07-04T15:24:05Z","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":"1c5251c25050c5e541b9b5dc63c857d934a56f9d7b9d92509f8efc6ff2c8361e","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"1996-07-16T02:51:07Z","title_canon_sha256":"46bc3291d6f5b9826c2820563865af915cc7dfe2c3ceb24dc218c9313abb01b3"},"schema_version":"1.0","source":{"id":"nucl-th/9607026","kind":"arxiv","version":1}},"canonical_sha256":"c6f67e1e7f33dbd411e27b1044b50bbe8e14b821518ad9f74c65bd7118b1d939","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"c6f67e1e7f33dbd411e27b1044b50bbe8e14b821518ad9f74c65bd7118b1d939","first_computed_at":"2026-07-04T15:24:05.356508Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-04T15:24:05.356508Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"0sY7mRlG8d32yj5n0s9KKCjoWRkoWYpXMCgychU/SXhOVBy3Ud3mcOs/dtQMcoUpnLWpnh3fybM7wPDILPmVAg==","signature_status":"signed_v1","signed_at":"2026-07-04T15:24:05.356919Z","signed_message":"canonical_sha256_bytes"},"source_id":"nucl-th/9607026","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:81b66621edcf6e5492806907bd6f823ca234b0e9affda4433922270dc1fb256c","sha256:b952830f06bdebfb06fed468e6f8bb6d594ba5800707aaa03be70d54b44db46e"],"state_sha256":"d6737581e6e9a95a9c286755ac662a2848d502d98bc6d2a01cc9f4347e9fc265"}