{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:MDHXOQGM4KRRX4JM5IGEE7PJUI","short_pith_number":"pith:MDHXOQGM","canonical_record":{"source":{"id":"1904.11616","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-25T22:55:10Z","cross_cats_sorted":[],"title_canon_sha256":"24417b9dda15d820c1fbac4209b03b20bbb69dded8abe3b4937729d2c800641d","abstract_canon_sha256":"67423913bd5e9080313f44cfdb2212a67996e7b66e926e8f67cc1130555deec0"},"schema_version":"1.0"},"canonical_sha256":"60cf7740cce2a31bf12cea0c427de9a2386f3416f39fc7eb8adf4f1551a828e7","source":{"kind":"arxiv","id":"1904.11616","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11616","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11616v2","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11616","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_12","alias_value":"MDHXOQGM4KRR","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_16","alias_value":"MDHXOQGM4KRRX4JM","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_8","alias_value":"MDHXOQGM","created_at":"2026-07-05T01:10:11Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:MDHXOQGM4KRRX4JM5IGEE7PJUI","target":"record","payload":{"canonical_record":{"source":{"id":"1904.11616","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-25T22:55:10Z","cross_cats_sorted":[],"title_canon_sha256":"24417b9dda15d820c1fbac4209b03b20bbb69dded8abe3b4937729d2c800641d","abstract_canon_sha256":"67423913bd5e9080313f44cfdb2212a67996e7b66e926e8f67cc1130555deec0"},"schema_version":"1.0"},"canonical_sha256":"60cf7740cce2a31bf12cea0c427de9a2386f3416f39fc7eb8adf4f1551a828e7","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:10:11.236252Z","signature_b64":"NPXqDpi4fTN2tTw1XuEvBQZAljbk2RHhILs3Lqrv43uASif3rRN4JAVrW4parTCoskQOWcutK1tFU+KAihTJAA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"60cf7740cce2a31bf12cea0c427de9a2386f3416f39fc7eb8adf4f1551a828e7","last_reissued_at":"2026-07-05T01:10:11.235833Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:10:11.235833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1904.11616","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":"2026-07-05T01:10:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"J+58TpUdWCTRab9RWXhY9987ywc7f6Fl9Jf0xFQUQAQLUTA+ooDYTRPCZQ6HpEXnnmuz5qc0FoduLNj9+YPxCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T12:03:17.568080Z"},"content_sha256":"2051a5a4a25662d8eb5d4a4c38361ff1187e383b4f95761cf27a1d9d52988dbd","schema_version":"1.0","event_id":"sha256:2051a5a4a25662d8eb5d4a4c38361ff1187e383b4f95761cf27a1d9d52988dbd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:MDHXOQGM4KRRX4JM5IGEE7PJUI","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"New LHCb pentaquarks as hadrocharmonium states","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Maxim V. Polyakov, Michael I. Eides, Victor Yu. Petrov","submitted_at":"2019-04-25T22:55:10Z","abstract_excerpt":"New LHCb Collaboration results on pentaquarks with hidden charm [1] are discussed. These results fit nicely in the hadrocharmonium pentaquark scenario [2,3]. In the new data the old LHCb pentaquark $P_c(4450)$ splits into two states $P_c(4440)$ and $P_c(4457)$. We interpret these two almost degenerate hadrocharmonium states with $J^P=1/2^-$ and $J^P=3/2^-$ as a result of hyperfine splitting between hadrocharmonium states predicted in [2]. It arises due to QCD multipole interaction between color-singlet hadrocharmonium constituents. We improve the theoretical estimate of hyperfine splitting [2,"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11616","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1904.11616/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":"2026-07-05T01:10:11Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"baUjBGFPASftnpzC5QWprx9lA531UW1ihlBIrlixVxT/vf4mjGY88Tc6znTaF/601Ei/HpqdjVsSstmBQ609AA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T12:03:17.568696Z"},"content_sha256":"f3c84d908bc2f39755c600f49c5cd542f766ca041573e85d681c9514f3a78453","schema_version":"1.0","event_id":"sha256:f3c84d908bc2f39755c600f49c5cd542f766ca041573e85d681c9514f3a78453"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/bundle.json","state_url":"https://pith.science/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/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":"2026-08-15T12:03:17Z","links":{"resolver":"https://pith.science/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI","bundle":"https://pith.science/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/bundle.json","state":"https://pith.science/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/state.json","well_known_bundle":"https://pith.science/.well-known/pith/MDHXOQGM4KRRX4JM5IGEE7PJUI/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:MDHXOQGM4KRRX4JM5IGEE7PJUI","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":"67423913bd5e9080313f44cfdb2212a67996e7b66e926e8f67cc1130555deec0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-25T22:55:10Z","title_canon_sha256":"24417b9dda15d820c1fbac4209b03b20bbb69dded8abe3b4937729d2c800641d"},"schema_version":"1.0","source":{"id":"1904.11616","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1904.11616","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"arxiv_version","alias_value":"1904.11616v2","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1904.11616","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_12","alias_value":"MDHXOQGM4KRR","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_16","alias_value":"MDHXOQGM4KRRX4JM","created_at":"2026-07-05T01:10:11Z"},{"alias_kind":"pith_short_8","alias_value":"MDHXOQGM","created_at":"2026-07-05T01:10:11Z"}],"graph_snapshots":[{"event_id":"sha256:f3c84d908bc2f39755c600f49c5cd542f766ca041573e85d681c9514f3a78453","target":"graph","created_at":"2026-07-05T01:10:11Z","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/1904.11616/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"New LHCb Collaboration results on pentaquarks with hidden charm [1] are discussed. These results fit nicely in the hadrocharmonium pentaquark scenario [2,3]. In the new data the old LHCb pentaquark $P_c(4450)$ splits into two states $P_c(4440)$ and $P_c(4457)$. We interpret these two almost degenerate hadrocharmonium states with $J^P=1/2^-$ and $J^P=3/2^-$ as a result of hyperfine splitting between hadrocharmonium states predicted in [2]. It arises due to QCD multipole interaction between color-singlet hadrocharmonium constituents. We improve the theoretical estimate of hyperfine splitting [2,","authors_text":"Maxim V. Polyakov, Michael I. Eides, Victor Yu. Petrov","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-25T22:55:10Z","title":"New LHCb pentaquarks as hadrocharmonium states"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1904.11616","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":"sha256:2051a5a4a25662d8eb5d4a4c38361ff1187e383b4f95761cf27a1d9d52988dbd","target":"record","created_at":"2026-07-05T01:10:11Z","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":"67423913bd5e9080313f44cfdb2212a67996e7b66e926e8f67cc1130555deec0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-04-25T22:55:10Z","title_canon_sha256":"24417b9dda15d820c1fbac4209b03b20bbb69dded8abe3b4937729d2c800641d"},"schema_version":"1.0","source":{"id":"1904.11616","kind":"arxiv","version":2}},"canonical_sha256":"60cf7740cce2a31bf12cea0c427de9a2386f3416f39fc7eb8adf4f1551a828e7","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"60cf7740cce2a31bf12cea0c427de9a2386f3416f39fc7eb8adf4f1551a828e7","first_computed_at":"2026-07-05T01:10:11.235833Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:10:11.235833Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"NPXqDpi4fTN2tTw1XuEvBQZAljbk2RHhILs3Lqrv43uASif3rRN4JAVrW4parTCoskQOWcutK1tFU+KAihTJAA==","signature_status":"signed_v1","signed_at":"2026-07-05T01:10:11.236252Z","signed_message":"canonical_sha256_bytes"},"source_id":"1904.11616","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:2051a5a4a25662d8eb5d4a4c38361ff1187e383b4f95761cf27a1d9d52988dbd","sha256:f3c84d908bc2f39755c600f49c5cd542f766ca041573e85d681c9514f3a78453"],"state_sha256":"4a84de005784c183ea01e97b1208a58d6881432a486950dbbb395171212e789f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"z4Bv3VeFgn15LYf8bAx5KQoq2mXLVjcjY5N2KOAIv5cXvJCcf+qqkDBn/veHtIe1sARmGtteEmd119rsv5LiCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T12:03:17.573802Z","bundle_sha256":"77fefec0a9aa096357a0b88757fef86197a9e33a9bd76962edd3030bbd8acdad"}}