{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2007:GKPD4CHTJ24WW6MXKG3XFQDCSZ","short_pith_number":"pith:GKPD4CHT","canonical_record":{"source":{"id":"0704.1529","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2007-04-12T06:11:34Z","cross_cats_sorted":[],"title_canon_sha256":"0588f3a76a815563187adbf096cfe5eb5febcfa9adbe8b9f974b0d8d5fa25f70","abstract_canon_sha256":"c8da24131a60126b1dd80e97cb16e8537ef68b1c1e34e1b35de1c0113fa02bf5"},"schema_version":"1.0"},"canonical_sha256":"329e3e08f34eb96b799751b772c062967611467ba2572b73038c16c683f5608c","source":{"kind":"arxiv","id":"0704.1529","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0704.1529","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"arxiv_version","alias_value":"0704.1529v1","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1529","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"pith_short_12","alias_value":"GKPD4CHTJ24W","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"GKPD4CHTJ24WW6MX","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"GKPD4CHT","created_at":"2026-05-18T12:25:55Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2007:GKPD4CHTJ24WW6MXKG3XFQDCSZ","target":"record","payload":{"canonical_record":{"source":{"id":"0704.1529","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"nucl-th","submitted_at":"2007-04-12T06:11:34Z","cross_cats_sorted":[],"title_canon_sha256":"0588f3a76a815563187adbf096cfe5eb5febcfa9adbe8b9f974b0d8d5fa25f70","abstract_canon_sha256":"c8da24131a60126b1dd80e97cb16e8537ef68b1c1e34e1b35de1c0113fa02bf5"},"schema_version":"1.0"},"canonical_sha256":"329e3e08f34eb96b799751b772c062967611467ba2572b73038c16c683f5608c","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:16:31.871425Z","signature_b64":"WJTwrRi4GpM8Hx7sIc6fRl0iaItErQf5UxbvBk95RuuMyqBde6kd+W9n1izU1xzDx+DRt7qvU8Vu0SgPUVVgAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"329e3e08f34eb96b799751b772c062967611467ba2572b73038c16c683f5608c","last_reissued_at":"2026-05-18T02:16:31.870708Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:16:31.870708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"0704.1529","source_version":1,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:16:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ksnd7afdILN8s78sJWSzFPSQqh7FPAHz5fTK0ECSbxHnWVVxTvH8MNpHTRFjRQZTLdDaU54p5zY7DVZgT1T3AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T12:34:31.385972Z"},"content_sha256":"e019a33b0276b65f801437fed3c44eefe91e25257c456d013c2a5edb84566d4f","schema_version":"1.0","event_id":"sha256:e019a33b0276b65f801437fed3c44eefe91e25257c456d013c2a5edb84566d4f"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2007:GKPD4CHTJ24WW6MXKG3XFQDCSZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Analysis of low energy pion spectra","license":"","headline":"","cross_cats":[],"primary_cat":"nucl-th","authors_text":"Kang Seog Lee, Suk Choi","submitted_at":"2007-04-12T06:11:34Z","abstract_excerpt":"The transverse mass spectra and the rapidity distributions of $\\pi^+$ and $\\pi^-$ in Au-Au collisions at 2, 4, 6, and 8 GeV$\\cdot$A by E895 collaboration are fitted using an elliptically expanding fireball model with the contribution from the resonance decays and the final state Coulomb interaction. The ratio of the total number of produced $\\pi^-$ and $\\pi^+$ is used to fit the data. The resulting freeze-out temperature is rather low($T_f < 60$ MeV) with large transverse flow and thus resonance contribution is very small. The difference in the shape of $m_t$ spectra of the oppositely charged "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1529","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"},"verdict_id":null},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-05-18T02:16:31Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"f5BMNpUiD9uhyKH7wF4cm7Wrfh6GvW+Ja9eiQFdFe3g6zfyl6RVveKMukA3RJ8+Ryxl8zpAmP2dWE/u4S2oVDw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-02T12:34:31.386308Z"},"content_sha256":"e37ae507852b60b219a3d23155323a098808620ad1ed438f102affc257685fb0","schema_version":"1.0","event_id":"sha256:e37ae507852b60b219a3d23155323a098808620ad1ed438f102affc257685fb0"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/bundle.json","state_url":"https://pith.science/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/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":"2026-07-02T12:34:31Z","links":{"resolver":"https://pith.science/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ","bundle":"https://pith.science/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/bundle.json","state":"https://pith.science/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/GKPD4CHTJ24WW6MXKG3XFQDCSZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2007:GKPD4CHTJ24WW6MXKG3XFQDCSZ","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":"c8da24131a60126b1dd80e97cb16e8537ef68b1c1e34e1b35de1c0113fa02bf5","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2007-04-12T06:11:34Z","title_canon_sha256":"0588f3a76a815563187adbf096cfe5eb5febcfa9adbe8b9f974b0d8d5fa25f70"},"schema_version":"1.0","source":{"id":"0704.1529","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"0704.1529","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"arxiv_version","alias_value":"0704.1529v1","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.0704.1529","created_at":"2026-05-18T02:16:31Z"},{"alias_kind":"pith_short_12","alias_value":"GKPD4CHTJ24W","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_16","alias_value":"GKPD4CHTJ24WW6MX","created_at":"2026-05-18T12:25:55Z"},{"alias_kind":"pith_short_8","alias_value":"GKPD4CHT","created_at":"2026-05-18T12:25:55Z"}],"graph_snapshots":[{"event_id":"sha256:e37ae507852b60b219a3d23155323a098808620ad1ed438f102affc257685fb0","target":"graph","created_at":"2026-05-18T02:16:31Z","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":"The transverse mass spectra and the rapidity distributions of $\\pi^+$ and $\\pi^-$ in Au-Au collisions at 2, 4, 6, and 8 GeV$\\cdot$A by E895 collaboration are fitted using an elliptically expanding fireball model with the contribution from the resonance decays and the final state Coulomb interaction. The ratio of the total number of produced $\\pi^-$ and $\\pi^+$ is used to fit the data. The resulting freeze-out temperature is rather low($T_f < 60$ MeV) with large transverse flow and thus resonance contribution is very small. The difference in the shape of $m_t$ spectra of the oppositely charged ","authors_text":"Kang Seog Lee, Suk Choi","cross_cats":[],"headline":"","license":"","primary_cat":"nucl-th","submitted_at":"2007-04-12T06:11:34Z","title":"Analysis of low energy pion spectra"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"0704.1529","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:e019a33b0276b65f801437fed3c44eefe91e25257c456d013c2a5edb84566d4f","target":"record","created_at":"2026-05-18T02:16:31Z","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":"c8da24131a60126b1dd80e97cb16e8537ef68b1c1e34e1b35de1c0113fa02bf5","cross_cats_sorted":[],"license":"","primary_cat":"nucl-th","submitted_at":"2007-04-12T06:11:34Z","title_canon_sha256":"0588f3a76a815563187adbf096cfe5eb5febcfa9adbe8b9f974b0d8d5fa25f70"},"schema_version":"1.0","source":{"id":"0704.1529","kind":"arxiv","version":1}},"canonical_sha256":"329e3e08f34eb96b799751b772c062967611467ba2572b73038c16c683f5608c","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"329e3e08f34eb96b799751b772c062967611467ba2572b73038c16c683f5608c","first_computed_at":"2026-05-18T02:16:31.870708Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:16:31.870708Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"WJTwrRi4GpM8Hx7sIc6fRl0iaItErQf5UxbvBk95RuuMyqBde6kd+W9n1izU1xzDx+DRt7qvU8Vu0SgPUVVgAA==","signature_status":"signed_v1","signed_at":"2026-05-18T02:16:31.871425Z","signed_message":"canonical_sha256_bytes"},"source_id":"0704.1529","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:e019a33b0276b65f801437fed3c44eefe91e25257c456d013c2a5edb84566d4f","sha256:e37ae507852b60b219a3d23155323a098808620ad1ed438f102affc257685fb0"],"state_sha256":"62d46c9d369e0273086f5b4b54d1298df2837980a867d3c14ed8c4d97218bef0"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"eKsS1mY1eP0AQyZHi6gxt+gfrX3kWtMAp3DqLQfus3j8SYKD7JEKJxsgO15UyFXtrz/r+iMtuyskUtZ7GlKgCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-02T12:34:31.388186Z","bundle_sha256":"ade6a8d97bdb57635a9e821b1c77efd6976114b4690acc03717833f7e33a27dd"}}