{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2014:LJDV32TPJIK6I7GVOL4C3NC62C","short_pith_number":"pith:LJDV32TP","canonical_record":{"source":{"id":"1405.3794","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-05-15T10:45:40Z","cross_cats_sorted":[],"title_canon_sha256":"f7fb688e0bcdb18168ed929ca204cbf189f97dd7079af973112d7880b17466f4","abstract_canon_sha256":"8f24d1794f9fd23c59b5e705a92f7cd1c83c670ac4c7960f9551fd7cba3aa032"},"schema_version":"1.0"},"canonical_sha256":"5a475dea6f4a15e47cd572f82db45ed0b1d84dd26d63ac0e7cda1158c3c30ae6","source":{"kind":"arxiv","id":"1405.3794","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.3794","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"arxiv_version","alias_value":"1405.3794v2","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.3794","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"pith_short_12","alias_value":"LJDV32TPJIK6","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LJDV32TPJIK6I7GV","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LJDV32TP","created_at":"2026-05-18T12:28:38Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2014:LJDV32TPJIK6I7GVOL4C3NC62C","target":"record","payload":{"canonical_record":{"source":{"id":"1405.3794","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-05-15T10:45:40Z","cross_cats_sorted":[],"title_canon_sha256":"f7fb688e0bcdb18168ed929ca204cbf189f97dd7079af973112d7880b17466f4","abstract_canon_sha256":"8f24d1794f9fd23c59b5e705a92f7cd1c83c670ac4c7960f9551fd7cba3aa032"},"schema_version":"1.0"},"canonical_sha256":"5a475dea6f4a15e47cd572f82db45ed0b1d84dd26d63ac0e7cda1158c3c30ae6","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:29:38.585368Z","signature_b64":"N7dgulc+zN1EemppBSfNTHDfD5uajhHT2tMr7uUE4PQZ6Pl6l56mZ6M73/G9LylGiuzdOGUT/UFoyxEBrk3iAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"5a475dea6f4a15e47cd572f82db45ed0b1d84dd26d63ac0e7cda1158c3c30ae6","last_reissued_at":"2026-05-18T01:29:38.584706Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:29:38.584706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1405.3794","source_version":2,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"gzifj8FtaWnUNKj3nrwWRmt1a6RRA4DiKpys6AKN442HmksfbHOViBzU0dcr+EEhUljQ9szsRC0yO+vRWp9kAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T00:49:25.885915Z"},"content_sha256":"33093f89b91ec854e5c71222aafe43c01d2414dfaf85494e15b5013e6a0c64a8","schema_version":"1.0","event_id":"sha256:33093f89b91ec854e5c71222aafe43c01d2414dfaf85494e15b5013e6a0c64a8"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2014:LJDV32TPJIK6I7GVOL4C3NC62C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Neutral pion production at midrapidity in pp and Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"ALICE Collaboration","submitted_at":"2014-05-15T10:45:40Z","abstract_excerpt":"Invariant yields of neutral pions at midrapidity in the transverse momentum range $0.6 < p_{T} < 12 GeV/c$ measured in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV are presented for six centrality classes. The pp reference spectrum was measured in the range $0.4 < p_{T} < 10 GeV/c$ at the same center-of-mass energy. The nuclear modification factor, $R_{\\rm AA}$, shows a suppression of neutral pions in central Pb-Pb collisions by a factor of up to about $8-10$ for $5 \\lesssim p_{T} \\lesssim 7 GeV/c$. The presented measurements are compared with results at lower center-of-mass energies and"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.3794","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T01:29:38Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1F7ivsUPX17yTx8M+VLFiYq4Hqby+0D8H55hEt5cYP+wlXL21sEPqn8mw83OPLwOTy8EYDVtUuZVSEfG9dFuBA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-24T00:49:25.886632Z"},"content_sha256":"1858fb5caa213f931c905c66cf60f24a8562e1a22ddec933a90d54f440fee093","schema_version":"1.0","event_id":"sha256:1858fb5caa213f931c905c66cf60f24a8562e1a22ddec933a90d54f440fee093"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/LJDV32TPJIK6I7GVOL4C3NC62C/bundle.json","state_url":"https://pith.science/pith/LJDV32TPJIK6I7GVOL4C3NC62C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/LJDV32TPJIK6I7GVOL4C3NC62C/bundle.json","status":"primary"}],"public_keys":[{"key_id":"pith-v1-2026-05","algorithm":"ed25519","format":"raw","public_key_b64":"stVStoiQhXFxp4s2pdzPNoqVNBMojDU/fJ2db5S3CbM=","public_key_hex":"b2d552b68890857171a78b36a5dccf368a953413288c353f7c9d9d6f94b709b3","fingerprint_sha256_b32_first128bits":"RVFV5Z2OI2J3ZUO7ERDEBCYNKS","fingerprint_sha256_hex":"8d4b5ee74e4693bcd1df2446408b0d54","rotates_at":null,"url":"https://pith.science/pith-signing-key.json","notes":"Pith uses this Ed25519 key to sign canonical record SHA-256 digests. Verify with: ed25519_verify(public_key, message=canonical_sha256_bytes, signature=base64decode(signature_b64))."}],"merge_version":"pith-open-graph-merge-v1","built_at":"2026-05-24T00:49:25Z","links":{"resolver":"https://pith.science/pith/LJDV32TPJIK6I7GVOL4C3NC62C","bundle":"https://pith.science/pith/LJDV32TPJIK6I7GVOL4C3NC62C/bundle.json","state":"https://pith.science/pith/LJDV32TPJIK6I7GVOL4C3NC62C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/LJDV32TPJIK6I7GVOL4C3NC62C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2014:LJDV32TPJIK6I7GVOL4C3NC62C","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":"8f24d1794f9fd23c59b5e705a92f7cd1c83c670ac4c7960f9551fd7cba3aa032","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-05-15T10:45:40Z","title_canon_sha256":"f7fb688e0bcdb18168ed929ca204cbf189f97dd7079af973112d7880b17466f4"},"schema_version":"1.0","source":{"id":"1405.3794","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1405.3794","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"arxiv_version","alias_value":"1405.3794v2","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1405.3794","created_at":"2026-05-18T01:29:38Z"},{"alias_kind":"pith_short_12","alias_value":"LJDV32TPJIK6","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_16","alias_value":"LJDV32TPJIK6I7GV","created_at":"2026-05-18T12:28:38Z"},{"alias_kind":"pith_short_8","alias_value":"LJDV32TP","created_at":"2026-05-18T12:28:38Z"}],"graph_snapshots":[{"event_id":"sha256:1858fb5caa213f931c905c66cf60f24a8562e1a22ddec933a90d54f440fee093","target":"graph","created_at":"2026-05-18T01:29:38Z","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":"Invariant yields of neutral pions at midrapidity in the transverse momentum range $0.6 < p_{T} < 12 GeV/c$ measured in Pb-Pb collisions at $\\sqrt{s_{\\rm NN}} = 2.76$ TeV are presented for six centrality classes. The pp reference spectrum was measured in the range $0.4 < p_{T} < 10 GeV/c$ at the same center-of-mass energy. The nuclear modification factor, $R_{\\rm AA}$, shows a suppression of neutral pions in central Pb-Pb collisions by a factor of up to about $8-10$ for $5 \\lesssim p_{T} \\lesssim 7 GeV/c$. The presented measurements are compared with results at lower center-of-mass energies and","authors_text":"ALICE Collaboration","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-05-15T10:45:40Z","title":"Neutral pion production at midrapidity in pp and Pb-Pb collisions at $\\sqrt{s_{\\rm NN}}$ = 2.76 TeV"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1405.3794","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":"sha256:33093f89b91ec854e5c71222aafe43c01d2414dfaf85494e15b5013e6a0c64a8","target":"record","created_at":"2026-05-18T01:29:38Z","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":"8f24d1794f9fd23c59b5e705a92f7cd1c83c670ac4c7960f9551fd7cba3aa032","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"nucl-ex","submitted_at":"2014-05-15T10:45:40Z","title_canon_sha256":"f7fb688e0bcdb18168ed929ca204cbf189f97dd7079af973112d7880b17466f4"},"schema_version":"1.0","source":{"id":"1405.3794","kind":"arxiv","version":2}},"canonical_sha256":"5a475dea6f4a15e47cd572f82db45ed0b1d84dd26d63ac0e7cda1158c3c30ae6","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"5a475dea6f4a15e47cd572f82db45ed0b1d84dd26d63ac0e7cda1158c3c30ae6","first_computed_at":"2026-05-18T01:29:38.584706Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:29:38.584706Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"N7dgulc+zN1EemppBSfNTHDfD5uajhHT2tMr7uUE4PQZ6Pl6l56mZ6M73/G9LylGiuzdOGUT/UFoyxEBrk3iAQ==","signature_status":"signed_v1","signed_at":"2026-05-18T01:29:38.585368Z","signed_message":"canonical_sha256_bytes"},"source_id":"1405.3794","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:33093f89b91ec854e5c71222aafe43c01d2414dfaf85494e15b5013e6a0c64a8","sha256:1858fb5caa213f931c905c66cf60f24a8562e1a22ddec933a90d54f440fee093"],"state_sha256":"75df6ff2b694dc9a7003d99ffe6657917997a2f17b978614e76efb7d73ffe3b7"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"IUVrZG7g+0xmRMOqVjRaGTlBUvAbht+bZuPfU09Iu4uDHPk2z9Oxk6oVxFSDYV8CNowYsyzWs1YlFryd44X7CA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-24T00:49:25.890397Z","bundle_sha256":"2c5a1edb20e6f587b06bd691b1b0a9a48e677fb57a192f5cb880ab46dece38c6"}}