{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2021:V4HE73HR5F2EPPG4WKKH5QQNXO","short_pith_number":"pith:V4HE73HR","canonical_record":{"source":{"id":"2112.05435","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-10T10:32:56Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"dd1ccd3eb2f361f8263d3427f21e08a88a0b90ec644a1129cff354ce188b77bd","abstract_canon_sha256":"b6bab4e0d19303cc35e9240b8f235086b48e2bfbc382341c36faea1423c2ead3"},"schema_version":"1.0"},"canonical_sha256":"af0e4fecf1e97447bcdcb2947ec20dbb97264f0d00b067e74fffa05f23e97306","source":{"kind":"arxiv","id":"2112.05435","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05435","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05435v2","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05435","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_12","alias_value":"V4HE73HR5F2E","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_16","alias_value":"V4HE73HR5F2EPPG4","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_8","alias_value":"V4HE73HR","created_at":"2026-07-05T03:59:43Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2021:V4HE73HR5F2EPPG4WKKH5QQNXO","target":"record","payload":{"canonical_record":{"source":{"id":"2112.05435","kind":"arxiv","version":2},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-10T10:32:56Z","cross_cats_sorted":["nucl-th"],"title_canon_sha256":"dd1ccd3eb2f361f8263d3427f21e08a88a0b90ec644a1129cff354ce188b77bd","abstract_canon_sha256":"b6bab4e0d19303cc35e9240b8f235086b48e2bfbc382341c36faea1423c2ead3"},"schema_version":"1.0"},"canonical_sha256":"af0e4fecf1e97447bcdcb2947ec20dbb97264f0d00b067e74fffa05f23e97306","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T03:59:43.099785Z","signature_b64":"VgJ9cc2+1Y62yc+u3Q/qGCEPm70JHKynfEXL6YzhhimhzIU0cEXgOLDX/PP6HdDX9sGsKt2JYRTBSYk+X+sBAQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"af0e4fecf1e97447bcdcb2947ec20dbb97264f0d00b067e74fffa05f23e97306","last_reissued_at":"2026-07-05T03:59:43.099322Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T03:59:43.099322Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2112.05435","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":"2026-07-05T03:59:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ktBcWwctKm4DnajdRXnAvwHopxHRK+CzBX+DQ7CwmSO6IP3wyW3ymJgY9eqiyHjNCEyft5R3XB1hgjOD7E7zDQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:02:29.581996Z"},"content_sha256":"ff5978957fd3d18e799cf22321e0c28100f219ea921e8db2f9a06e951c77b8ae","schema_version":"1.0","event_id":"sha256:ff5978957fd3d18e799cf22321e0c28100f219ea921e8db2f9a06e951c77b8ae"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2021:V4HE73HR5F2EPPG4WKKH5QQNXO","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Gluon and valence quark distributions for the pion and kaon in nuclear matter","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["nucl-th"],"primary_cat":"hep-ph","authors_text":"Parada T.P. Hutauruk, Seung-il Nam","submitted_at":"2021-12-10T10:32:56Z","abstract_excerpt":"In this paper we study the gluon and valence quark distributions in the pion and kaon in nuclear medium for various nuclear densities as well as in vacuum within the Nambu--Jona-Lasinio (NJL) model with the help of the proper-time regularization scheme which simulates a confinement of QCD. The nuclear medium effect is also determined in the same model for the symmetric nuclear matter. We then analyze the gluon and valence quark distributions for the bound pion and kaon in symmetric nuclear matter as well as those in vacuum. We find that the valence quark and gluon distributions in vacuum have "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05435","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/2112.05435/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":"2026-07-05T03:59:43Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"F/qpT8OldQhAn/aSL+k6L/RUuLRVO4bjF5RSWZex2z9o+wTotifJGGbuq35ZSdMMqrKHl8ZJBD7umQfTyrfQBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-15T18:02:29.582522Z"},"content_sha256":"e6191501ea20906027f21c0c6b4c232519b9bd7d4741e79924120028d528a058","schema_version":"1.0","event_id":"sha256:e6191501ea20906027f21c0c6b4c232519b9bd7d4741e79924120028d528a058"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/bundle.json","state_url":"https://pith.science/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/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":"2026-08-15T18:02:29Z","links":{"resolver":"https://pith.science/pith/V4HE73HR5F2EPPG4WKKH5QQNXO","bundle":"https://pith.science/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/bundle.json","state":"https://pith.science/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/state.json","well_known_bundle":"https://pith.science/.well-known/pith/V4HE73HR5F2EPPG4WKKH5QQNXO/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2021:V4HE73HR5F2EPPG4WKKH5QQNXO","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":"b6bab4e0d19303cc35e9240b8f235086b48e2bfbc382341c36faea1423c2ead3","cross_cats_sorted":["nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-10T10:32:56Z","title_canon_sha256":"dd1ccd3eb2f361f8263d3427f21e08a88a0b90ec644a1129cff354ce188b77bd"},"schema_version":"1.0","source":{"id":"2112.05435","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2112.05435","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"arxiv_version","alias_value":"2112.05435v2","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2112.05435","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_12","alias_value":"V4HE73HR5F2E","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_16","alias_value":"V4HE73HR5F2EPPG4","created_at":"2026-07-05T03:59:43Z"},{"alias_kind":"pith_short_8","alias_value":"V4HE73HR","created_at":"2026-07-05T03:59:43Z"}],"graph_snapshots":[{"event_id":"sha256:e6191501ea20906027f21c0c6b4c232519b9bd7d4741e79924120028d528a058","target":"graph","created_at":"2026-07-05T03:59:43Z","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/2112.05435/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"In this paper we study the gluon and valence quark distributions in the pion and kaon in nuclear medium for various nuclear densities as well as in vacuum within the Nambu--Jona-Lasinio (NJL) model with the help of the proper-time regularization scheme which simulates a confinement of QCD. The nuclear medium effect is also determined in the same model for the symmetric nuclear matter. We then analyze the gluon and valence quark distributions for the bound pion and kaon in symmetric nuclear matter as well as those in vacuum. We find that the valence quark and gluon distributions in vacuum have ","authors_text":"Parada T.P. Hutauruk, Seung-il Nam","cross_cats":["nucl-th"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-10T10:32:56Z","title":"Gluon and valence quark distributions for the pion and kaon in nuclear matter"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2112.05435","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:ff5978957fd3d18e799cf22321e0c28100f219ea921e8db2f9a06e951c77b8ae","target":"record","created_at":"2026-07-05T03:59:43Z","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":"b6bab4e0d19303cc35e9240b8f235086b48e2bfbc382341c36faea1423c2ead3","cross_cats_sorted":["nucl-th"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2021-12-10T10:32:56Z","title_canon_sha256":"dd1ccd3eb2f361f8263d3427f21e08a88a0b90ec644a1129cff354ce188b77bd"},"schema_version":"1.0","source":{"id":"2112.05435","kind":"arxiv","version":2}},"canonical_sha256":"af0e4fecf1e97447bcdcb2947ec20dbb97264f0d00b067e74fffa05f23e97306","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"af0e4fecf1e97447bcdcb2947ec20dbb97264f0d00b067e74fffa05f23e97306","first_computed_at":"2026-07-05T03:59:43.099322Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T03:59:43.099322Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"VgJ9cc2+1Y62yc+u3Q/qGCEPm70JHKynfEXL6YzhhimhzIU0cEXgOLDX/PP6HdDX9sGsKt2JYRTBSYk+X+sBAQ==","signature_status":"signed_v1","signed_at":"2026-07-05T03:59:43.099785Z","signed_message":"canonical_sha256_bytes"},"source_id":"2112.05435","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:ff5978957fd3d18e799cf22321e0c28100f219ea921e8db2f9a06e951c77b8ae","sha256:e6191501ea20906027f21c0c6b4c232519b9bd7d4741e79924120028d528a058"],"state_sha256":"2414d3d0b369177620be6e6d5a2da07cfc358185a108af5f01b15579d936eb34"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"zdrn1TkArJFJngLOMmkWRX9fdB3yDY8SqthZbUVOlR/TnkURkoK4XnORM+fJtFilLSD1mmWzp2tJXjDz9MwdCw==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-15T18:02:29.586111Z","bundle_sha256":"4d98a8a40264ac71803f2531fd2e94af29cf46d0a18a63c0d6bd5a84eba9b20a"}}