{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2023:CHRB6S4SEE75KONO6X22PSBNCS","short_pith_number":"pith:CHRB6S4S","canonical_record":{"source":{"id":"2308.06473","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-12T05:49:05Z","cross_cats_sorted":[],"title_canon_sha256":"05210feddf8e81b4511afe122038d805cdf7ced12f8aaf3f648049c92ce38c5b","abstract_canon_sha256":"7db77bfcd706ead2e9bb85c035b6904a1acd1bf48ffea87ef3e4d2ab5d313b20"},"schema_version":"1.0"},"canonical_sha256":"11e21f4b92213fd539aef5f5a7c82d14b02a4cc962257ac817f36381417415cb","source":{"kind":"arxiv","id":"2308.06473","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.06473","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"arxiv_version","alias_value":"2308.06473v1","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.06473","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_12","alias_value":"CHRB6S4SEE75","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHRB6S4SEE75KONO","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHRB6S4S","created_at":"2026-07-05T06:40:40Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2023:CHRB6S4SEE75KONO6X22PSBNCS","target":"record","payload":{"canonical_record":{"source":{"id":"2308.06473","kind":"arxiv","version":1},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-12T05:49:05Z","cross_cats_sorted":[],"title_canon_sha256":"05210feddf8e81b4511afe122038d805cdf7ced12f8aaf3f648049c92ce38c5b","abstract_canon_sha256":"7db77bfcd706ead2e9bb85c035b6904a1acd1bf48ffea87ef3e4d2ab5d313b20"},"schema_version":"1.0"},"canonical_sha256":"11e21f4b92213fd539aef5f5a7c82d14b02a4cc962257ac817f36381417415cb","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T06:40:40.638451Z","signature_b64":"5e5n4UeCCRQXGsuuX/hsC5hKM6Y+L9kiN8HLPEKtTDxvMZZUMsRaKuNiOEzcgoRbFDtNEignRjXYMH0MijqDDw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"11e21f4b92213fd539aef5f5a7c82d14b02a4cc962257ac817f36381417415cb","last_reissued_at":"2026-07-05T06:40:40.637927Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T06:40:40.637927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2308.06473","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":"2026-07-05T06:40:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"2hLPgJ6IX5nCCx0krJpF+E7tajn+dwVgxurI89D6VclPejk7Ae/HK2xa6SmCl2JN/TZVj0q39Z87vuY7ngToAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T18:12:28.671037Z"},"content_sha256":"d9106dd67627a6fb5c09776a24307daaa5d05aeddc760aa59fa5a3573c2f3a2b","schema_version":"1.0","event_id":"sha256:d9106dd67627a6fb5c09776a24307daaa5d05aeddc760aa59fa5a3573c2f3a2b"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2023:CHRB6S4SEE75KONO6X22PSBNCS","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of $^8$Be","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":[],"primary_cat":"nucl-ex","authors_text":"A.J. Krasznahorkay, A. Krak\\'o, A. Krasznahorkay, I. Rajta, I. Vajda, J. Tim\\'ar, L. Csige, M. Begala, M. Csatl\\'os","submitted_at":"2023-08-12T05:49:05Z","abstract_excerpt":"Angular correlation spectra of $e^+e^-$ pairs produced in the $^{7}$Li($p$,$\\gamma$)$^{8}$Be nuclear reaction were studied at a proton beam energy of $E_p$~=~4.0~MeV, which corresponds to the excitation energy of the Giant Dipole Resonance (GDR) in $^8$Be. The spectra measured show a peak like anomaly at 120$^\\circ$ and a broader anomaly also above 140$^\\circ$. Both anomalies could consistently be described by assuming that the same hypothetical X17 particle was created both in the ground-state transition and in the transition going to the broad ($\\Gamma$=1.5~MeV), first excited state in $^8$B"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.06473","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2308.06473/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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":"2026-07-05T06:40:40Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"NDnU4cb4IlGbHNPUMSMoEOtaTYr/96yMFhE/ddLsZyRMaR7mrdHwLtYJ2hEc4PzGc0U55UmHfRhGyxM+XYkHBg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-18T18:12:28.671582Z"},"content_sha256":"6975675391eaa0a0a3b87f2ce693660f2481f4d553d473f6a2861303f9491b3d","schema_version":"1.0","event_id":"sha256:6975675391eaa0a0a3b87f2ce693660f2481f4d553d473f6a2861303f9491b3d"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/CHRB6S4SEE75KONO6X22PSBNCS/bundle.json","state_url":"https://pith.science/pith/CHRB6S4SEE75KONO6X22PSBNCS/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/CHRB6S4SEE75KONO6X22PSBNCS/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":"2026-08-18T18:12:28Z","links":{"resolver":"https://pith.science/pith/CHRB6S4SEE75KONO6X22PSBNCS","bundle":"https://pith.science/pith/CHRB6S4SEE75KONO6X22PSBNCS/bundle.json","state":"https://pith.science/pith/CHRB6S4SEE75KONO6X22PSBNCS/state.json","well_known_bundle":"https://pith.science/.well-known/pith/CHRB6S4SEE75KONO6X22PSBNCS/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2023:CHRB6S4SEE75KONO6X22PSBNCS","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":"7db77bfcd706ead2e9bb85c035b6904a1acd1bf48ffea87ef3e4d2ab5d313b20","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-12T05:49:05Z","title_canon_sha256":"05210feddf8e81b4511afe122038d805cdf7ced12f8aaf3f648049c92ce38c5b"},"schema_version":"1.0","source":{"id":"2308.06473","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2308.06473","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"arxiv_version","alias_value":"2308.06473v1","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2308.06473","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_12","alias_value":"CHRB6S4SEE75","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_16","alias_value":"CHRB6S4SEE75KONO","created_at":"2026-07-05T06:40:40Z"},{"alias_kind":"pith_short_8","alias_value":"CHRB6S4S","created_at":"2026-07-05T06:40:40Z"}],"graph_snapshots":[{"event_id":"sha256:6975675391eaa0a0a3b87f2ce693660f2481f4d553d473f6a2861303f9491b3d","target":"graph","created_at":"2026-07-05T06:40:40Z","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/2308.06473/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Angular correlation spectra of $e^+e^-$ pairs produced in the $^{7}$Li($p$,$\\gamma$)$^{8}$Be nuclear reaction were studied at a proton beam energy of $E_p$~=~4.0~MeV, which corresponds to the excitation energy of the Giant Dipole Resonance (GDR) in $^8$Be. The spectra measured show a peak like anomaly at 120$^\\circ$ and a broader anomaly also above 140$^\\circ$. Both anomalies could consistently be described by assuming that the same hypothetical X17 particle was created both in the ground-state transition and in the transition going to the broad ($\\Gamma$=1.5~MeV), first excited state in $^8$B","authors_text":"A.J. Krasznahorkay, A. Krak\\'o, A. Krasznahorkay, I. Rajta, I. Vajda, J. Tim\\'ar, L. Csige, M. Begala, M. Csatl\\'os","cross_cats":[],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-12T05:49:05Z","title":"Observation of the X17 anomaly in the decay of the Giant Dipole Resonance of $^8$Be"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2308.06473","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:d9106dd67627a6fb5c09776a24307daaa5d05aeddc760aa59fa5a3573c2f3a2b","target":"record","created_at":"2026-07-05T06:40:40Z","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":"7db77bfcd706ead2e9bb85c035b6904a1acd1bf48ffea87ef3e4d2ab5d313b20","cross_cats_sorted":[],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"nucl-ex","submitted_at":"2023-08-12T05:49:05Z","title_canon_sha256":"05210feddf8e81b4511afe122038d805cdf7ced12f8aaf3f648049c92ce38c5b"},"schema_version":"1.0","source":{"id":"2308.06473","kind":"arxiv","version":1}},"canonical_sha256":"11e21f4b92213fd539aef5f5a7c82d14b02a4cc962257ac817f36381417415cb","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"11e21f4b92213fd539aef5f5a7c82d14b02a4cc962257ac817f36381417415cb","first_computed_at":"2026-07-05T06:40:40.637927Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T06:40:40.637927Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"5e5n4UeCCRQXGsuuX/hsC5hKM6Y+L9kiN8HLPEKtTDxvMZZUMsRaKuNiOEzcgoRbFDtNEignRjXYMH0MijqDDw==","signature_status":"signed_v1","signed_at":"2026-07-05T06:40:40.638451Z","signed_message":"canonical_sha256_bytes"},"source_id":"2308.06473","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:d9106dd67627a6fb5c09776a24307daaa5d05aeddc760aa59fa5a3573c2f3a2b","sha256:6975675391eaa0a0a3b87f2ce693660f2481f4d553d473f6a2861303f9491b3d"],"state_sha256":"93247a1e4d30855c85330246ad943634f9a0becc40f9854ea63d664a4af695a2"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"TkNxopzWf7ix9l2KFu4t8m4cdbHDhetdbY037VJb2YxHiTaGNW9j3xDL+vVJJ6objyUqvq2vusm87J+tbNf7BA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-18T18:12:28.678198Z","bundle_sha256":"e459732fd5f52ee6dd2ce2c120c7c8a7cd571a69bf3f9547779073d5a8a24e5e"}}