{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2019:QJ7LRSMQHOFCDWZWXMNT6RXH7C","short_pith_number":"pith:QJ7LRSMQ","canonical_record":{"source":{"id":"1907.02750","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2019-07-05T10:02:12Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"3a9c48da0b9bd37596c679982413c6d08ded4c8b71a916d76e7665991b2be546","abstract_canon_sha256":"96e14790660a48c920c065d03bcd1e5bf9a00301af41e13f1d3afe2f56b17205"},"schema_version":"1.0"},"canonical_sha256":"827eb8c9903b8a21db36bb1b3f46e7f8ae41fa3cef01476d4ed41291321807dc","source":{"kind":"arxiv","id":"1907.02750","version":3},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02750","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02750v3","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02750","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"QJ7LRSMQHOFC","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_16","alias_value":"QJ7LRSMQHOFCDWZW","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_8","alias_value":"QJ7LRSMQ","created_at":"2026-07-05T02:38:12Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2019:QJ7LRSMQHOFCDWZWXMNT6RXH7C","target":"record","payload":{"canonical_record":{"source":{"id":"1907.02750","kind":"arxiv","version":3},"metadata":{"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2019-07-05T10:02:12Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"3a9c48da0b9bd37596c679982413c6d08ded4c8b71a916d76e7665991b2be546","abstract_canon_sha256":"96e14790660a48c920c065d03bcd1e5bf9a00301af41e13f1d3afe2f56b17205"},"schema_version":"1.0"},"canonical_sha256":"827eb8c9903b8a21db36bb1b3f46e7f8ae41fa3cef01476d4ed41291321807dc","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T02:38:12.000860Z","signature_b64":"Gc+cJxbQMRG+TrHMzfpe/QOR1Tq5bvLRMbrbjktCpRfPINTFm0OOwfwLlLvenyWSx2WZvyfHtikY/DQg9SDICA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"827eb8c9903b8a21db36bb1b3f46e7f8ae41fa3cef01476d4ed41291321807dc","last_reissued_at":"2026-07-05T02:38:12.000286Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T02:38:12.000286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1907.02750","source_version":3,"attestation_state":"computed"},"signer":{"signer_id":"pith.science","signer_type":"pith_registry","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"created_at":"2026-07-05T02:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"/Mfk+90VzTrTcBx1UYX/TTpY9sNw+ru3DfBRe9pTca+w4xfDZD7qLPr81if6E1Xc8wDiW2fQaLugpFFk1VglCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:41:43.113626Z"},"content_sha256":"a75e354ef6983da696fdc50f6b85b94f04f5f38e43ceb900130dae601f527025","schema_version":"1.0","event_id":"sha256:a75e354ef6983da696fdc50f6b85b94f04f5f38e43ceb900130dae601f527025"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2019:QJ7LRSMQHOFCDWZWXMNT6RXH7C","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Ad Lucem: QED Parton Distribution Functions in the MMHT Framework","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A. D. Martin, L. A. Harland-Lang, R. Nathvani, R. S. Thorne","submitted_at":"2019-07-05T10:02:12Z","abstract_excerpt":"We present the MMHT2015qed PDF set, resulting from the inclusion of QED corrections to the existing set of MMHT Parton Distribution Functions (PDFs), and which contain the photon PDF of the proton. Adopting an input distribution from the LUXqed formulation, we discuss our methods of including QED effects for the full, coupled DGLAP evolution of all partons with QED at $\\mathcal{O}(\\alpha)$, $\\mathcal{O}(\\alpha\\alpha_{S})$, $\\mathcal{O}(\\alpha^2)$. While we find consistency for the photon PDF of the proton with other recent sets, building on this we also present a set of QED corrected neutron P"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02750","kind":"arxiv","version":3},"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/1907.02750/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":"2026-07-05T02:38:12Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"UoCyPLwSkRZvtQqfJ706f+XhV0Y1Yy53fZRsCdhnPBUvpDPFZO3fmPo07yNa0UId/pPZehuWNTKwZ+1P5fxQCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-08-04T00:41:43.114947Z"},"content_sha256":"c3142037da4718bb29f0a52f29c4913e3c99d4216f511ac74a068bdf5eca8d1f","schema_version":"1.0","event_id":"sha256:c3142037da4718bb29f0a52f29c4913e3c99d4216f511ac74a068bdf5eca8d1f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/bundle.json","state_url":"https://pith.science/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/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":"2026-08-04T00:41:43Z","links":{"resolver":"https://pith.science/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C","bundle":"https://pith.science/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/bundle.json","state":"https://pith.science/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QJ7LRSMQHOFCDWZWXMNT6RXH7C/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2019:QJ7LRSMQHOFCDWZWXMNT6RXH7C","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":"96e14790660a48c920c065d03bcd1e5bf9a00301af41e13f1d3afe2f56b17205","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2019-07-05T10:02:12Z","title_canon_sha256":"3a9c48da0b9bd37596c679982413c6d08ded4c8b71a916d76e7665991b2be546"},"schema_version":"1.0","source":{"id":"1907.02750","kind":"arxiv","version":3}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1907.02750","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"arxiv_version","alias_value":"1907.02750v3","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1907.02750","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_12","alias_value":"QJ7LRSMQHOFC","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_16","alias_value":"QJ7LRSMQHOFCDWZW","created_at":"2026-07-05T02:38:12Z"},{"alias_kind":"pith_short_8","alias_value":"QJ7LRSMQ","created_at":"2026-07-05T02:38:12Z"}],"graph_snapshots":[{"event_id":"sha256:c3142037da4718bb29f0a52f29c4913e3c99d4216f511ac74a068bdf5eca8d1f","target":"graph","created_at":"2026-07-05T02:38:12Z","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/1907.02750/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"We present the MMHT2015qed PDF set, resulting from the inclusion of QED corrections to the existing set of MMHT Parton Distribution Functions (PDFs), and which contain the photon PDF of the proton. Adopting an input distribution from the LUXqed formulation, we discuss our methods of including QED effects for the full, coupled DGLAP evolution of all partons with QED at $\\mathcal{O}(\\alpha)$, $\\mathcal{O}(\\alpha\\alpha_{S})$, $\\mathcal{O}(\\alpha^2)$. While we find consistency for the photon PDF of the proton with other recent sets, building on this we also present a set of QED corrected neutron P","authors_text":"A. D. Martin, L. A. Harland-Lang, R. Nathvani, R. S. Thorne","cross_cats":["hep-ex"],"headline":"","license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2019-07-05T10:02:12Z","title":"Ad Lucem: QED Parton Distribution Functions in the MMHT Framework"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1907.02750","kind":"arxiv","version":3},"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:a75e354ef6983da696fdc50f6b85b94f04f5f38e43ceb900130dae601f527025","target":"record","created_at":"2026-07-05T02:38:12Z","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":"96e14790660a48c920c065d03bcd1e5bf9a00301af41e13f1d3afe2f56b17205","cross_cats_sorted":["hep-ex"],"license":"http://creativecommons.org/licenses/by/4.0/","primary_cat":"hep-ph","submitted_at":"2019-07-05T10:02:12Z","title_canon_sha256":"3a9c48da0b9bd37596c679982413c6d08ded4c8b71a916d76e7665991b2be546"},"schema_version":"1.0","source":{"id":"1907.02750","kind":"arxiv","version":3}},"canonical_sha256":"827eb8c9903b8a21db36bb1b3f46e7f8ae41fa3cef01476d4ed41291321807dc","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"827eb8c9903b8a21db36bb1b3f46e7f8ae41fa3cef01476d4ed41291321807dc","first_computed_at":"2026-07-05T02:38:12.000286Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T02:38:12.000286Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"Gc+cJxbQMRG+TrHMzfpe/QOR1Tq5bvLRMbrbjktCpRfPINTFm0OOwfwLlLvenyWSx2WZvyfHtikY/DQg9SDICA==","signature_status":"signed_v1","signed_at":"2026-07-05T02:38:12.000860Z","signed_message":"canonical_sha256_bytes"},"source_id":"1907.02750","source_kind":"arxiv","source_version":3}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:a75e354ef6983da696fdc50f6b85b94f04f5f38e43ceb900130dae601f527025","sha256:c3142037da4718bb29f0a52f29c4913e3c99d4216f511ac74a068bdf5eca8d1f"],"state_sha256":"3cb2b957a0dfc52f9f356d4a116005e6136a7efbaac9cfd9bd599e2561d58d47"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Wiq+PP7NbmvycPfW6Ey+jYUplEvL67fG+/rJCxgoajK7fP/aNwwGotNMM0LIWdnEusFx+xf7ADUtHEPvvU8qCA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-08-04T00:41:43.120826Z","bundle_sha256":"e8a6ff486952e104c8fe461b710295c3322865f17d78e70c884ddec65538439a"}}