{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2013:XVHZ3SZOBPQ77REZKPRVW4D6OZ","short_pith_number":"pith:XVHZ3SZO","canonical_record":{"source":{"id":"1309.0025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-08-30T20:45:01Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0bd54428d07591603e18fc1d2b2282b1ae6c9cd6b9d50bda0c89c6484b6a74ba","abstract_canon_sha256":"fa95599729ff4627a3daaf82ae13746be13054d1ff193ab7b853149232a71f70"},"schema_version":"1.0"},"canonical_sha256":"bd4f9dcb2e0be1ffc49953e35b707e76628ed154ddda1ba95967155db9c87238","source":{"kind":"arxiv","id":"1309.0025","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0025","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0025v2","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0025","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"pith_short_12","alias_value":"XVHZ3SZOBPQ7","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XVHZ3SZOBPQ77REZ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XVHZ3SZO","created_at":"2026-05-18T12:28:06Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2013:XVHZ3SZOBPQ77REZKPRVW4D6OZ","target":"record","payload":{"canonical_record":{"source":{"id":"1309.0025","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-08-30T20:45:01Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"0bd54428d07591603e18fc1d2b2282b1ae6c9cd6b9d50bda0c89c6484b6a74ba","abstract_canon_sha256":"fa95599729ff4627a3daaf82ae13746be13054d1ff193ab7b853149232a71f70"},"schema_version":"1.0"},"canonical_sha256":"bd4f9dcb2e0be1ffc49953e35b707e76628ed154ddda1ba95967155db9c87238","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:44:55.360495Z","signature_b64":"vtg1Bip5dFweRjyR8VFi3N7wQmHlx5uXVtofln02u+ZZLMwyc4xBIhWU9IJpSn4fRcoF391ESt8vU6ykYQP/AQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"bd4f9dcb2e0be1ffc49953e35b707e76628ed154ddda1ba95967155db9c87238","last_reissued_at":"2026-05-18T02:44:55.359990Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:44:55.359990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1309.0025","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":"2026-05-18T02:44:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"o6xWojuglL+DOfikTQ3Wc8ImQootR9Qf4Au5VNufnIb6XaWnvndfQA8skUs1OMe3UE/SfmR2R9AcTu/ddOcHBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:24:38.900149Z"},"content_sha256":"dd99f7181da9f8d4bb97fbc08bf9a5fe4b91fda0123fcdfdb1c728ba71e8b070","schema_version":"1.0","event_id":"sha256:dd99f7181da9f8d4bb97fbc08bf9a5fe4b91fda0123fcdfdb1c728ba71e8b070"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2013:XVHZ3SZOBPQ77REZKPRVW4D6OZ","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Carl Schmidt, C.-P. Yuan, Daniel Stump, Joey Huston, Jon Pumplin, Jun Gao, Sayipjamal Dulat, Tie-Jiun Hou","submitted_at":"2013-08-30T20:45:01Z","abstract_excerpt":"We study the possibility of intrinsic (non-perturbative) charm in parton distribution functions (PDF) of the proton, within the context of the CT10 next-to-next-to-leading order (NNLO) global analysis. Three models for the intrinsic charm (IC) quark content are compared: (i) $\\hat{c}(x) = 0$ (zero-IC model); (ii) $\\hat{c}(x)$ is parametrized by a valence-like parton distribution (BHPS model); (iii) $\\hat{c}(x)$ is parametrized by a sea-like parton distribution (SEA model). In these models, the intrinsic charm content, $\\hat{c}(x)$, is included in the charm PDF at the matching scale $Q_c=m_c=1."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0025","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":""},"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":"2026-05-18T02:44:55Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"LbIrLfYEO1zNhbce3OVrKEqRj4UgGu+th8gFpOomUkkIeHE47+sUAaH67BAftYpXFWaDF3C8Rdxa6Y5bntAWAA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-27T19:24:38.900804Z"},"content_sha256":"58a7f5c2ef65a8644abe9b5dd52e78b1ee9a36b5dbd8c775656112464b544b93","schema_version":"1.0","event_id":"sha256:58a7f5c2ef65a8644abe9b5dd52e78b1ee9a36b5dbd8c775656112464b544b93"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/bundle.json","state_url":"https://pith.science/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/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":"2026-05-27T19:24:38Z","links":{"resolver":"https://pith.science/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ","bundle":"https://pith.science/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/bundle.json","state":"https://pith.science/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XVHZ3SZOBPQ77REZKPRVW4D6OZ/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2013:XVHZ3SZOBPQ77REZKPRVW4D6OZ","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":"fa95599729ff4627a3daaf82ae13746be13054d1ff193ab7b853149232a71f70","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-08-30T20:45:01Z","title_canon_sha256":"0bd54428d07591603e18fc1d2b2282b1ae6c9cd6b9d50bda0c89c6484b6a74ba"},"schema_version":"1.0","source":{"id":"1309.0025","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1309.0025","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"arxiv_version","alias_value":"1309.0025v2","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1309.0025","created_at":"2026-05-18T02:44:55Z"},{"alias_kind":"pith_short_12","alias_value":"XVHZ3SZOBPQ7","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_16","alias_value":"XVHZ3SZOBPQ77REZ","created_at":"2026-05-18T12:28:06Z"},{"alias_kind":"pith_short_8","alias_value":"XVHZ3SZO","created_at":"2026-05-18T12:28:06Z"}],"graph_snapshots":[{"event_id":"sha256:58a7f5c2ef65a8644abe9b5dd52e78b1ee9a36b5dbd8c775656112464b544b93","target":"graph","created_at":"2026-05-18T02:44:55Z","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 the possibility of intrinsic (non-perturbative) charm in parton distribution functions (PDF) of the proton, within the context of the CT10 next-to-next-to-leading order (NNLO) global analysis. Three models for the intrinsic charm (IC) quark content are compared: (i) $\\hat{c}(x) = 0$ (zero-IC model); (ii) $\\hat{c}(x)$ is parametrized by a valence-like parton distribution (BHPS model); (iii) $\\hat{c}(x)$ is parametrized by a sea-like parton distribution (SEA model). In these models, the intrinsic charm content, $\\hat{c}(x)$, is included in the charm PDF at the matching scale $Q_c=m_c=1.","authors_text":"Carl Schmidt, C.-P. Yuan, Daniel Stump, Joey Huston, Jon Pumplin, Jun Gao, Sayipjamal Dulat, Tie-Jiun Hou","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-08-30T20:45:01Z","title":"Intrinsic Charm Parton Distribution Functions from CTEQ-TEA Global Analysis"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1309.0025","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:dd99f7181da9f8d4bb97fbc08bf9a5fe4b91fda0123fcdfdb1c728ba71e8b070","target":"record","created_at":"2026-05-18T02:44:55Z","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":"fa95599729ff4627a3daaf82ae13746be13054d1ff193ab7b853149232a71f70","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-08-30T20:45:01Z","title_canon_sha256":"0bd54428d07591603e18fc1d2b2282b1ae6c9cd6b9d50bda0c89c6484b6a74ba"},"schema_version":"1.0","source":{"id":"1309.0025","kind":"arxiv","version":2}},"canonical_sha256":"bd4f9dcb2e0be1ffc49953e35b707e76628ed154ddda1ba95967155db9c87238","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"bd4f9dcb2e0be1ffc49953e35b707e76628ed154ddda1ba95967155db9c87238","first_computed_at":"2026-05-18T02:44:55.359990Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:44:55.359990Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"vtg1Bip5dFweRjyR8VFi3N7wQmHlx5uXVtofln02u+ZZLMwyc4xBIhWU9IJpSn4fRcoF391ESt8vU6ykYQP/AQ==","signature_status":"signed_v1","signed_at":"2026-05-18T02:44:55.360495Z","signed_message":"canonical_sha256_bytes"},"source_id":"1309.0025","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:dd99f7181da9f8d4bb97fbc08bf9a5fe4b91fda0123fcdfdb1c728ba71e8b070","sha256:58a7f5c2ef65a8644abe9b5dd52e78b1ee9a36b5dbd8c775656112464b544b93"],"state_sha256":"4045204cca4ec9a41d4a31710815b556de8121ea8e9449261a619d72cfcc2f4d"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"OvLY5Joov881Vx1zVkuA5QiBMAZ/izeBzsaSE/AE4a/a1F4OxoyyvuFL7joDGNT0X08Xogz1BLFSoSqkm0uDAQ==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-27T19:24:38.904123Z","bundle_sha256":"4ac706f6debf3902d1ecd0293e8b36dd80a82241b50e0434243edce74ce55c8e"}}