{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2010:6SMRNLUAWJUSGZ4DGLA334NS57","short_pith_number":"pith:6SMRNLUA","canonical_record":{"source":{"id":"1007.0897","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-07-06T13:59:15Z","cross_cats_sorted":[],"title_canon_sha256":"d7e4a1279ef41b0fe193cd85e11a1570055203c29f0c2a146d094ed595cbd05a","abstract_canon_sha256":"d8849ab286ff0c0cc3fe3c917ef805ed6ea231419d1f194cd7f80291b1fbb31b"},"schema_version":"1.0"},"canonical_sha256":"f49916ae80b26923678332c1bdf1b2efc49328f92a0b47b6b4e3e1f8d58a0a80","source":{"kind":"arxiv","id":"1007.0897","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.0897","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"arxiv_version","alias_value":"1007.0897v1","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.0897","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"pith_short_12","alias_value":"6SMRNLUAWJUS","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"6SMRNLUAWJUSGZ4D","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"6SMRNLUA","created_at":"2026-05-18T12:26:04Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2010:6SMRNLUAWJUSGZ4DGLA334NS57","target":"record","payload":{"canonical_record":{"source":{"id":"1007.0897","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-07-06T13:59:15Z","cross_cats_sorted":[],"title_canon_sha256":"d7e4a1279ef41b0fe193cd85e11a1570055203c29f0c2a146d094ed595cbd05a","abstract_canon_sha256":"d8849ab286ff0c0cc3fe3c917ef805ed6ea231419d1f194cd7f80291b1fbb31b"},"schema_version":"1.0"},"canonical_sha256":"f49916ae80b26923678332c1bdf1b2efc49328f92a0b47b6b4e3e1f8d58a0a80","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:35:36.797453Z","signature_b64":"qSWOTfQwGbRarDmYk1vbvy8WYnKmdtGBnstSgV8LGL1YfUFSXHZg0hYLRPCCuKcQ75yNq5gsZ8t/bgjanFhXBQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"f49916ae80b26923678332c1bdf1b2efc49328f92a0b47b6b4e3e1f8d58a0a80","last_reissued_at":"2026-05-18T04:35:36.796782Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:35:36.796782Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1007.0897","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":"2026-05-18T04:35:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ctZsthGZ8j6/3O0OlB7PzrgQl53qKCQFe/SldPjBEE9seCwzeYRPl2zgko4uzcJ5Td6M7EQD18NuX5bPmLIfBw==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:11:18.365390Z"},"content_sha256":"99655419c4ab095db27e1afb3d3ca3cb6d9029989d6446e64066f4a451a22f07","schema_version":"1.0","event_id":"sha256:99655419c4ab095db27e1afb3d3ca3cb6d9029989d6446e64066f4a451a22f07"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2010:6SMRNLUAWJUSGZ4DGLA334NS57","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"A Comparison of new MC-adapted Parton Densities","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Tomas Kasemets, Torbj\\\"orn Sj\\\"ostrand","submitted_at":"2010-07-06T13:59:15Z","abstract_excerpt":"A selection of the latest and most frequently used parton distribution functions (PDFs) is incorporated in Pythia8, including the Monte Carlo-adapted PDFs from the MSTW and CTEQ collaborations. This article examines the differences in PDFs as well as the effect they have on results of simulations and compare with data collected by the CDF experiment. Monte Carlo-adapted PDFs do a better job than leading- and next-to-leading order PDFs for many observables, but there is room for further improvements."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.0897","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":"2026-05-18T04:35:36Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Uw+50xanEtw8xidTU9wJGo3Uu1ihm7ESmIrv2QZpwuXw3PyWxWorNdJaNeS26PWyxNvqVx+WXklLe5yZZxk2DA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-10T10:11:18.365788Z"},"content_sha256":"30392f2aaa6dfeda534b932a97e4df7b33ac64614e14082261251573c0c84547","schema_version":"1.0","event_id":"sha256:30392f2aaa6dfeda534b932a97e4df7b33ac64614e14082261251573c0c84547"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/6SMRNLUAWJUSGZ4DGLA334NS57/bundle.json","state_url":"https://pith.science/pith/6SMRNLUAWJUSGZ4DGLA334NS57/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/6SMRNLUAWJUSGZ4DGLA334NS57/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":"2026-06-10T10:11:18Z","links":{"resolver":"https://pith.science/pith/6SMRNLUAWJUSGZ4DGLA334NS57","bundle":"https://pith.science/pith/6SMRNLUAWJUSGZ4DGLA334NS57/bundle.json","state":"https://pith.science/pith/6SMRNLUAWJUSGZ4DGLA334NS57/state.json","well_known_bundle":"https://pith.science/.well-known/pith/6SMRNLUAWJUSGZ4DGLA334NS57/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2010:6SMRNLUAWJUSGZ4DGLA334NS57","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":"d8849ab286ff0c0cc3fe3c917ef805ed6ea231419d1f194cd7f80291b1fbb31b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-07-06T13:59:15Z","title_canon_sha256":"d7e4a1279ef41b0fe193cd85e11a1570055203c29f0c2a146d094ed595cbd05a"},"schema_version":"1.0","source":{"id":"1007.0897","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1007.0897","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"arxiv_version","alias_value":"1007.0897v1","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1007.0897","created_at":"2026-05-18T04:35:36Z"},{"alias_kind":"pith_short_12","alias_value":"6SMRNLUAWJUS","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_16","alias_value":"6SMRNLUAWJUSGZ4D","created_at":"2026-05-18T12:26:04Z"},{"alias_kind":"pith_short_8","alias_value":"6SMRNLUA","created_at":"2026-05-18T12:26:04Z"}],"graph_snapshots":[{"event_id":"sha256:30392f2aaa6dfeda534b932a97e4df7b33ac64614e14082261251573c0c84547","target":"graph","created_at":"2026-05-18T04:35:36Z","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":"A selection of the latest and most frequently used parton distribution functions (PDFs) is incorporated in Pythia8, including the Monte Carlo-adapted PDFs from the MSTW and CTEQ collaborations. This article examines the differences in PDFs as well as the effect they have on results of simulations and compare with data collected by the CDF experiment. Monte Carlo-adapted PDFs do a better job than leading- and next-to-leading order PDFs for many observables, but there is room for further improvements.","authors_text":"Tomas Kasemets, Torbj\\\"orn Sj\\\"ostrand","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-07-06T13:59:15Z","title":"A Comparison of new MC-adapted Parton Densities"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1007.0897","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":"sha256:99655419c4ab095db27e1afb3d3ca3cb6d9029989d6446e64066f4a451a22f07","target":"record","created_at":"2026-05-18T04:35:36Z","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":"d8849ab286ff0c0cc3fe3c917ef805ed6ea231419d1f194cd7f80291b1fbb31b","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2010-07-06T13:59:15Z","title_canon_sha256":"d7e4a1279ef41b0fe193cd85e11a1570055203c29f0c2a146d094ed595cbd05a"},"schema_version":"1.0","source":{"id":"1007.0897","kind":"arxiv","version":1}},"canonical_sha256":"f49916ae80b26923678332c1bdf1b2efc49328f92a0b47b6b4e3e1f8d58a0a80","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"f49916ae80b26923678332c1bdf1b2efc49328f92a0b47b6b4e3e1f8d58a0a80","first_computed_at":"2026-05-18T04:35:36.796782Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T04:35:36.796782Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"qSWOTfQwGbRarDmYk1vbvy8WYnKmdtGBnstSgV8LGL1YfUFSXHZg0hYLRPCCuKcQ75yNq5gsZ8t/bgjanFhXBQ==","signature_status":"signed_v1","signed_at":"2026-05-18T04:35:36.797453Z","signed_message":"canonical_sha256_bytes"},"source_id":"1007.0897","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:99655419c4ab095db27e1afb3d3ca3cb6d9029989d6446e64066f4a451a22f07","sha256:30392f2aaa6dfeda534b932a97e4df7b33ac64614e14082261251573c0c84547"],"state_sha256":"386de069d340020fc1e62653639cbd5ffd1a46e473dd154ccf34688f244ce30f"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"cYIooPSblK1yR2Wv9NvVL6nUrViCZHehSaTwH4VVjh67jew4vL9mqMBgfmUDIxt7epuy2vFw+U99KJuxYWOWAA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-10T10:11:18.369154Z","bundle_sha256":"43b8eaa564c1425e3c4201c454d0505226e0da44a26dbaefe10db2aac5f906f7"}}