{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2018:LIWQBDZW466OJF4ML36CVCIO72","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":"896a2898d4ee73ca930cbab3c9dfd9fd151f6b4659677d9386463f2023f34e0c","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-04-09T14:48:23Z","title_canon_sha256":"5a72fee05c025e6034e92d275ce49c014acedbdff54e4e013e0c2310cd652fe4"},"schema_version":"1.0","source":{"id":"1804.03031","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1804.03031","created_at":"2026-05-18T00:09:03Z"},{"alias_kind":"arxiv_version","alias_value":"1804.03031v2","created_at":"2026-05-18T00:09:03Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1804.03031","created_at":"2026-05-18T00:09:03Z"},{"alias_kind":"pith_short_12","alias_value":"LIWQBDZW466O","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_16","alias_value":"LIWQBDZW466OJF4M","created_at":"2026-05-18T12:32:37Z"},{"alias_kind":"pith_short_8","alias_value":"LIWQBDZW","created_at":"2026-05-18T12:32:37Z"}],"graph_snapshots":[{"event_id":"sha256:22219ce212eb7b22c48288e69e215eace17887000efc1260c502c0cff2006b5d","target":"graph","created_at":"2026-05-18T00:09:03Z","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"},"paper":{"abstract_excerpt":"In proton-nucleus and nucleus-nucleus collision experiments, one determines the centrality of a collision according to the multiplicity or energy deposited in a detector. This serves as a proxy for the true collision centrality, as defined by the impact parameter. We show that the probability distribution of impact parameter in a given bin of experiment-defined centrality can be reconstructed without assuming any specific model for the collision dynamics, in both proton-nucleus and nucleus-nucleus systems. The reconstruction is reliable up to about 10\\% centrality, and is more accurate for nuc","authors_text":"Giuliano Giacalone, Jean-Yves Ollitrault, Rudolph Rogly","cross_cats":["hep-ph","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-04-09T14:48:23Z","title":"Reconstructing the impact parameter of proton-nucleus and nucleus-nucleus collisions"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1804.03031","kind":"arxiv","version":2},"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":"sha256:4bd9e7de9b0959f8df9519d075bfda47690acf6e49ed86aa3f4f600b2881278d","target":"record","created_at":"2026-05-18T00:09:03Z","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":"896a2898d4ee73ca930cbab3c9dfd9fd151f6b4659677d9386463f2023f34e0c","cross_cats_sorted":["hep-ph","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-th","submitted_at":"2018-04-09T14:48:23Z","title_canon_sha256":"5a72fee05c025e6034e92d275ce49c014acedbdff54e4e013e0c2310cd652fe4"},"schema_version":"1.0","source":{"id":"1804.03031","kind":"arxiv","version":2}},"canonical_sha256":"5a2d008f36e7bce4978c5efc2a890efea18673a2bf7e71a85a3e43dbb0602baa","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a2d008f36e7bce4978c5efc2a890efea18673a2bf7e71a85a3e43dbb0602baa","first_computed_at":"2026-05-18T00:09:03.906691Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T00:09:03.906691Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"gbeTLdWjwgAM3D/gfnSo+ulGR2wB9yEI5cIusyuAy9UQSRD40qq3xxVScA/5PWQQNyDRb+CpX/i6LQflGgQJCg==","signature_status":"signed_v1","signed_at":"2026-05-18T00:09:03.907291Z","signed_message":"canonical_sha256_bytes"},"source_id":"1804.03031","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:4bd9e7de9b0959f8df9519d075bfda47690acf6e49ed86aa3f4f600b2881278d","sha256:22219ce212eb7b22c48288e69e215eace17887000efc1260c502c0cff2006b5d"],"state_sha256":"a19f5c2d328e21dfdcfd307ce0f45c08601829ca60094e79e847a577d28b12f5"}