{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2002:ERQM7UUKO3MQWYTQYO2GXUGESP","short_pith_number":"pith:ERQM7UUK","canonical_record":{"source":{"id":"hep-ex/0202042","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2002-02-25T08:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"25c756378d0574b988c4b90920c014f1678991c6ef652283fee70c54715c588f","abstract_canon_sha256":"2aafaf774d7463a9efbb669985b4cf3c9662ad0633a60c720e73c394fedb9fab"},"schema_version":"1.0"},"canonical_sha256":"2460cfd28a76d90b6270c3b46bd0c493f2f8c63b205f50c7520e7c417e7b235d","source":{"kind":"arxiv","id":"hep-ex/0202042","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0202042","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0202042v1","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0202042","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"pith_short_12","alias_value":"ERQM7UUKO3MQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ERQM7UUKO3MQWYTQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ERQM7UUK","created_at":"2026-05-18T12:25:50Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2002:ERQM7UUKO3MQWYTQYO2GXUGESP","target":"record","payload":{"canonical_record":{"source":{"id":"hep-ex/0202042","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ex","submitted_at":"2002-02-25T08:39:00Z","cross_cats_sorted":[],"title_canon_sha256":"25c756378d0574b988c4b90920c014f1678991c6ef652283fee70c54715c588f","abstract_canon_sha256":"2aafaf774d7463a9efbb669985b4cf3c9662ad0633a60c720e73c394fedb9fab"},"schema_version":"1.0"},"canonical_sha256":"2460cfd28a76d90b6270c3b46bd0c493f2f8c63b205f50c7520e7c417e7b235d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:13:27.032701Z","signature_b64":"yD1NFURdiwvy9FamGwOQsLFOMbPG+zCJO3MZ45IT58rSlc7jfDZfXs5GKzEFj7p38viKp+vAmuWomw5bVOg5Aw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"2460cfd28a76d90b6270c3b46bd0c493f2f8c63b205f50c7520e7c417e7b235d","last_reissued_at":"2026-05-18T04:13:27.032032Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:13:27.032032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"hep-ex/0202042","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":"2026-05-18T04:13:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"lylfw+fyor7aNgVhTcfSryxzwxmuIwptzgycD7Di3F+pgQB+drIuYzSqpyMNlf8Vnnhl5gb+bupuk4EGrqVbCw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:38:25.767212Z"},"content_sha256":"2c53574ed7e460d18d3a7ed9a011ef44cc8ef481ad1fee0c74d385799fb35caf","schema_version":"1.0","event_id":"sha256:2c53574ed7e460d18d3a7ed9a011ef44cc8ef481ad1fee0c74d385799fb35caf"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2002:ERQM7UUKO3MQWYTQYO2GXUGESP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Pion Correlations and Resonance Effects in ppbar Annihilation to 4pi0 at Rest","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"M.P. Locher, O. Kortner, O. Wigger, P. Weber, V.E. Markushin","submitted_at":"2002-02-25T08:39:00Z","abstract_excerpt":"We study pi0pi0 correlations in the exclusive reaction ppbar -> 4pi0 at rest with complete reconstruction of the kinematics for each event. The inclusive distribution shows a dip at small invariant mass of the pion pair while a small enhancement in the double differential distribution is observed for small invariant masses of both pion pairs. Dynamical models with resonances in the final state are shown to be consistent with the data while the stochastic HBT mechanism is not supported by the present findings."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0202042","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":"2026-05-18T04:13:27Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"1PbRm7EvBVu+ShGHDqaWrxqTuAF0p+SGKeNX7Hph4t+PvDQQhzptB/UU8kadPpyvlvZyKin4K2YTrdkEnVmxBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T20:38:25.767564Z"},"content_sha256":"4ad2dfa388e2e80949a68e6015b52fca8b2930b082f4e6de1058f2e2373b7ef5","schema_version":"1.0","event_id":"sha256:4ad2dfa388e2e80949a68e6015b52fca8b2930b082f4e6de1058f2e2373b7ef5"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/bundle.json","state_url":"https://pith.science/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/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":"2026-06-03T20:38:25Z","links":{"resolver":"https://pith.science/pith/ERQM7UUKO3MQWYTQYO2GXUGESP","bundle":"https://pith.science/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/bundle.json","state":"https://pith.science/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/ERQM7UUKO3MQWYTQYO2GXUGESP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2002:ERQM7UUKO3MQWYTQYO2GXUGESP","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":"2aafaf774d7463a9efbb669985b4cf3c9662ad0633a60c720e73c394fedb9fab","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2002-02-25T08:39:00Z","title_canon_sha256":"25c756378d0574b988c4b90920c014f1678991c6ef652283fee70c54715c588f"},"schema_version":"1.0","source":{"id":"hep-ex/0202042","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"hep-ex/0202042","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"arxiv_version","alias_value":"hep-ex/0202042v1","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ex/0202042","created_at":"2026-05-18T04:13:27Z"},{"alias_kind":"pith_short_12","alias_value":"ERQM7UUKO3MQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_16","alias_value":"ERQM7UUKO3MQWYTQ","created_at":"2026-05-18T12:25:50Z"},{"alias_kind":"pith_short_8","alias_value":"ERQM7UUK","created_at":"2026-05-18T12:25:50Z"}],"graph_snapshots":[{"event_id":"sha256:4ad2dfa388e2e80949a68e6015b52fca8b2930b082f4e6de1058f2e2373b7ef5","target":"graph","created_at":"2026-05-18T04:13:27Z","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":"We study pi0pi0 correlations in the exclusive reaction ppbar -> 4pi0 at rest with complete reconstruction of the kinematics for each event. The inclusive distribution shows a dip at small invariant mass of the pion pair while a small enhancement in the double differential distribution is observed for small invariant masses of both pion pairs. Dynamical models with resonances in the final state are shown to be consistent with the data while the stochastic HBT mechanism is not supported by the present findings.","authors_text":"M.P. Locher, O. Kortner, O. Wigger, P. Weber, V.E. Markushin","cross_cats":[],"headline":"","license":"","primary_cat":"hep-ex","submitted_at":"2002-02-25T08:39:00Z","title":"Pion Correlations and Resonance Effects in ppbar Annihilation to 4pi0 at Rest"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0202042","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":"sha256:2c53574ed7e460d18d3a7ed9a011ef44cc8ef481ad1fee0c74d385799fb35caf","target":"record","created_at":"2026-05-18T04:13:27Z","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":"2aafaf774d7463a9efbb669985b4cf3c9662ad0633a60c720e73c394fedb9fab","cross_cats_sorted":[],"license":"","primary_cat":"hep-ex","submitted_at":"2002-02-25T08:39:00Z","title_canon_sha256":"25c756378d0574b988c4b90920c014f1678991c6ef652283fee70c54715c588f"},"schema_version":"1.0","source":{"id":"hep-ex/0202042","kind":"arxiv","version":1}},"canonical_sha256":"2460cfd28a76d90b6270c3b46bd0c493f2f8c63b205f50c7520e7c417e7b235d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"2460cfd28a76d90b6270c3b46bd0c493f2f8c63b205f50c7520e7c417e7b235d","first_computed_at":"2026-05-18T04:13:27.032032Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:13:27.032032Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"yD1NFURdiwvy9FamGwOQsLFOMbPG+zCJO3MZ45IT58rSlc7jfDZfXs5GKzEFj7p38viKp+vAmuWomw5bVOg5Aw==","signature_status":"signed_v1","signed_at":"2026-05-18T04:13:27.032701Z","signed_message":"canonical_sha256_bytes"},"source_id":"hep-ex/0202042","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2c53574ed7e460d18d3a7ed9a011ef44cc8ef481ad1fee0c74d385799fb35caf","sha256:4ad2dfa388e2e80949a68e6015b52fca8b2930b082f4e6de1058f2e2373b7ef5"],"state_sha256":"019c710758964de1bcf2f376586b31c1b797e44d3b478a68a41307ca0b4ee0fb"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"BKVA3sSOqjFOqo7Q8VOXYQ0LSr+r+KPn8PN4TnR/ZqYakjDvWFlzjZwTRqFevKc/+1RNCfKfbknkmbDxFRijDg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T20:38:25.769467Z","bundle_sha256":"fa1716b873a64ac0712de73c34dc67fb8eb30168a8c58f0ee821a43635f8245f"}}