{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2015:3BEICNRYC5C2DSN2TTDSNSRZ3V","short_pith_number":"pith:3BEICNRY","canonical_record":{"source":{"id":"1512.00426","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-01T20:28:36Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"1dcd52ed91999c0a615464082c62eaa338e240e738a9dba7ba5c6a4685f5f51b","abstract_canon_sha256":"48b18c55ff66161053aa7ee3df254a5c6427cb13516b9df38340f0a2a6b5ef5c"},"schema_version":"1.0"},"canonical_sha256":"d8488136381745a1c9ba9cc726ca39dd566912e94d41c039c65c8f6904b0d7fe","source":{"kind":"arxiv","id":"1512.00426","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00426","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00426v1","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00426","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"3BEICNRYC5C2","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3BEICNRYC5C2DSN2","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3BEICNRY","created_at":"2026-05-18T12:29:02Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2015:3BEICNRYC5C2DSN2TTDSNSRZ3V","target":"record","payload":{"canonical_record":{"source":{"id":"1512.00426","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-01T20:28:36Z","cross_cats_sorted":["hep-ex","nucl-ex"],"title_canon_sha256":"1dcd52ed91999c0a615464082c62eaa338e240e738a9dba7ba5c6a4685f5f51b","abstract_canon_sha256":"48b18c55ff66161053aa7ee3df254a5c6427cb13516b9df38340f0a2a6b5ef5c"},"schema_version":"1.0"},"canonical_sha256":"d8488136381745a1c9ba9cc726ca39dd566912e94d41c039c65c8f6904b0d7fe","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T01:17:42.645355Z","signature_b64":"xYvYkNQd0ZrW4auhyEm6rgFPb7juaJR8mQimNmDVTAWxVJd/prU1ZwajhNtCY0RkIEubAYf6Fh4Mo2mFe/w4Ag==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"d8488136381745a1c9ba9cc726ca39dd566912e94d41c039c65c8f6904b0d7fe","last_reissued_at":"2026-05-18T01:17:42.644546Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T01:17:42.644546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1512.00426","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":"2026-05-18T01:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ltuxFClEWOFipXyhPSTqnO3n8g7hVBUW4kIYxYx78R0KVWo91W+/TSy1UxGQiqH2dZ9riARaZR1CLUBmXpNuDg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:14:12.204226Z"},"content_sha256":"ec2c7c1754c47e9439a1f40e0b542295edabd203a4b01e109c68df155ed0f9cd","schema_version":"1.0","event_id":"sha256:ec2c7c1754c47e9439a1f40e0b542295edabd203a4b01e109c68df155ed0f9cd"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2015:3BEICNRYC5C2DSN2TTDSNSRZ3V","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Narrow Nucleon-$\\psi(2S)$ Bound State and LHCb Pentaquarks","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","nucl-ex"],"primary_cat":"hep-ph","authors_text":"Maxim V. Polyakov, Michael I. Eides, Victor Yu.Petrov","submitted_at":"2015-12-01T20:28:36Z","abstract_excerpt":"We interpret the newly discovered pentaquark $P_c(4450)$ as a bound state of charmonium $\\psi(2S)$ and the nucleon. The binding potential is due to charmonium-nucleon interaction that in the heavy quark approximation is proportional to the product of the charmonium chromoelectric polarizability and the nucleon energy-momentum distribution. We use the large $N_c$ expansion to estimate the quarkonium polarizability and calculate the nucleon properties in the framework of the mean-field picture of light baryons. Two almost degenerate states $J^P=(1/2)^-$ and $J^P=(3/2)^-$ are predicted at the pos"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00426","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":"2026-05-18T01:17:42Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"s49iQ8Ty4G7JNihdMax+AjbQw+ebNmeY4J/onpTnuObSL5sIW4Bp+4FcJRhQapOzbZBEEw6L5whvCcNsValMAg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-03T18:14:12.204686Z"},"content_sha256":"a5693172257f491b5b0bbe1e0405f5c73e70289981ff959981ee0c2d2eee2538","schema_version":"1.0","event_id":"sha256:a5693172257f491b5b0bbe1e0405f5c73e70289981ff959981ee0c2d2eee2538"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/bundle.json","state_url":"https://pith.science/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/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":"2026-08-03T18:14:12Z","links":{"resolver":"https://pith.science/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V","bundle":"https://pith.science/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/bundle.json","state":"https://pith.science/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/state.json","well_known_bundle":"https://pith.science/.well-known/pith/3BEICNRYC5C2DSN2TTDSNSRZ3V/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2015:3BEICNRYC5C2DSN2TTDSNSRZ3V","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":"48b18c55ff66161053aa7ee3df254a5c6427cb13516b9df38340f0a2a6b5ef5c","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-01T20:28:36Z","title_canon_sha256":"1dcd52ed91999c0a615464082c62eaa338e240e738a9dba7ba5c6a4685f5f51b"},"schema_version":"1.0","source":{"id":"1512.00426","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1512.00426","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"arxiv_version","alias_value":"1512.00426v1","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1512.00426","created_at":"2026-05-18T01:17:42Z"},{"alias_kind":"pith_short_12","alias_value":"3BEICNRYC5C2","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_16","alias_value":"3BEICNRYC5C2DSN2","created_at":"2026-05-18T12:29:02Z"},{"alias_kind":"pith_short_8","alias_value":"3BEICNRY","created_at":"2026-05-18T12:29:02Z"}],"graph_snapshots":[{"event_id":"sha256:a5693172257f491b5b0bbe1e0405f5c73e70289981ff959981ee0c2d2eee2538","target":"graph","created_at":"2026-05-18T01:17:42Z","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 interpret the newly discovered pentaquark $P_c(4450)$ as a bound state of charmonium $\\psi(2S)$ and the nucleon. The binding potential is due to charmonium-nucleon interaction that in the heavy quark approximation is proportional to the product of the charmonium chromoelectric polarizability and the nucleon energy-momentum distribution. We use the large $N_c$ expansion to estimate the quarkonium polarizability and calculate the nucleon properties in the framework of the mean-field picture of light baryons. Two almost degenerate states $J^P=(1/2)^-$ and $J^P=(3/2)^-$ are predicted at the pos","authors_text":"Maxim V. Polyakov, Michael I. Eides, Victor Yu.Petrov","cross_cats":["hep-ex","nucl-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-01T20:28:36Z","title":"Narrow Nucleon-$\\psi(2S)$ Bound State and LHCb Pentaquarks"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1512.00426","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:ec2c7c1754c47e9439a1f40e0b542295edabd203a4b01e109c68df155ed0f9cd","target":"record","created_at":"2026-05-18T01:17:42Z","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":"48b18c55ff66161053aa7ee3df254a5c6427cb13516b9df38340f0a2a6b5ef5c","cross_cats_sorted":["hep-ex","nucl-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2015-12-01T20:28:36Z","title_canon_sha256":"1dcd52ed91999c0a615464082c62eaa338e240e738a9dba7ba5c6a4685f5f51b"},"schema_version":"1.0","source":{"id":"1512.00426","kind":"arxiv","version":1}},"canonical_sha256":"d8488136381745a1c9ba9cc726ca39dd566912e94d41c039c65c8f6904b0d7fe","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"d8488136381745a1c9ba9cc726ca39dd566912e94d41c039c65c8f6904b0d7fe","first_computed_at":"2026-05-18T01:17:42.644546Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T01:17:42.644546Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xYvYkNQd0ZrW4auhyEm6rgFPb7juaJR8mQimNmDVTAWxVJd/prU1ZwajhNtCY0RkIEubAYf6Fh4Mo2mFe/w4Ag==","signature_status":"signed_v1","signed_at":"2026-05-18T01:17:42.645355Z","signed_message":"canonical_sha256_bytes"},"source_id":"1512.00426","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ec2c7c1754c47e9439a1f40e0b542295edabd203a4b01e109c68df155ed0f9cd","sha256:a5693172257f491b5b0bbe1e0405f5c73e70289981ff959981ee0c2d2eee2538"],"state_sha256":"cdea419c8a59cbd6d39751a4212777ac59b72dbc70d6c153366930a5abd238cf"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3El3YoDfGXNzDm+in1OnQaZWLFtYWvTgrLctF5eXqZsYU8RmI36HamLy6KCF/tu0xnibHFZhQOMoeD3/IMw0Dg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-03T18:14:12.215673Z","bundle_sha256":"37d3eb8124d7c9b9357e84023500622e806c5ee8d56613b94a74c398b2bed2fa"}}