{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2012:U4Y2B7SCQBUDFZJFOESQHS4AMK","short_pith_number":"pith:U4Y2B7SC","canonical_record":{"source":{"id":"1206.0621","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-06-04T13:50:30Z","cross_cats_sorted":[],"title_canon_sha256":"48967210a0e494b9dd2bcd30cc7c754d3f01a102822a0a86fa9bc28a4b60f719","abstract_canon_sha256":"7d28084abb9f12a26ccb2f066f69ed4685b9373a72e58d0673b278925fb33bd0"},"schema_version":"1.0"},"canonical_sha256":"a731a0fe42806832e525712503cb8062882170e7c128390d4df6a61b51b4b800","source":{"kind":"arxiv","id":"1206.0621","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0621","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0621v2","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0621","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"U4Y2B7SCQBUD","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"U4Y2B7SCQBUDFZJF","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"U4Y2B7SC","created_at":"2026-05-18T12:27:23Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2012:U4Y2B7SCQBUDFZJFOESQHS4AMK","target":"record","payload":{"canonical_record":{"source":{"id":"1206.0621","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-06-04T13:50:30Z","cross_cats_sorted":[],"title_canon_sha256":"48967210a0e494b9dd2bcd30cc7c754d3f01a102822a0a86fa9bc28a4b60f719","abstract_canon_sha256":"7d28084abb9f12a26ccb2f066f69ed4685b9373a72e58d0673b278925fb33bd0"},"schema_version":"1.0"},"canonical_sha256":"a731a0fe42806832e525712503cb8062882170e7c128390d4df6a61b51b4b800","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T03:51:01.605715Z","signature_b64":"xgE7Dqi4EvFGuEnZVn88UldToggbscyHRheiaDUwrjzIvL1hz4QF6sYgPcYDS0Rhvv4vqOE4Zz6f+8h+fIMnCA==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"a731a0fe42806832e525712503cb8062882170e7c128390d4df6a61b51b4b800","last_reissued_at":"2026-05-18T03:51:01.604935Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T03:51:01.604935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1206.0621","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":"2026-05-18T03:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"3jgKYpfd5fFeT6x0Kshu4AHBTngV3BZGnWUSPGr6R5hoYLczPuxNYNwJu+48SbN3Vc1XTtpZCv0SvzgRDogqBQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:10:13.729161Z"},"content_sha256":"b52a84fa66dc0cb610c7cfd6d6fe934d8503d24bcaf2d0dc26479c8c6511961c","schema_version":"1.0","event_id":"sha256:b52a84fa66dc0cb610c7cfd6d6fe934d8503d24bcaf2d0dc26479c8c6511961c"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2012:U4Y2B7SCQBUDFZJFOESQHS4AMK","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Progress in top-pair production at hadron colliders","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Alexander Mitov, Michal Czakon, Peter Baernreuther","submitted_at":"2012-06-04T13:50:30Z","abstract_excerpt":"We review recently derived NNLO QCD results for top-pair production at hadron colliders. We compare the size of the NNLO corrections in $q\\bar q\\to t\\bar t+X$ with the LO and NLO ones, and address the question of convergence of perturbative series. We compare the NLO and NNLO K-factors for the Tevatron."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0621","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":"2026-05-18T03:51:01Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"AmsQHPJrCKG9yBEQZt6RZ4xhGgdTtcONOYi0vUZ8NgAxbT17isJxizrf3gaxsUUU1E5ZDenI+MklLTWIBCOWAQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-06-03T01:10:13.729516Z"},"content_sha256":"ef0a46980bd3d1ab3f17aee71b18a28e312839b3b5371c33f4c04db774c87f36","schema_version":"1.0","event_id":"sha256:ef0a46980bd3d1ab3f17aee71b18a28e312839b3b5371c33f4c04db774c87f36"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/bundle.json","state_url":"https://pith.science/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/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":"2026-06-03T01:10:13Z","links":{"resolver":"https://pith.science/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK","bundle":"https://pith.science/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/bundle.json","state":"https://pith.science/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/state.json","well_known_bundle":"https://pith.science/.well-known/pith/U4Y2B7SCQBUDFZJFOESQHS4AMK/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2012:U4Y2B7SCQBUDFZJFOESQHS4AMK","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":"7d28084abb9f12a26ccb2f066f69ed4685b9373a72e58d0673b278925fb33bd0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-06-04T13:50:30Z","title_canon_sha256":"48967210a0e494b9dd2bcd30cc7c754d3f01a102822a0a86fa9bc28a4b60f719"},"schema_version":"1.0","source":{"id":"1206.0621","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1206.0621","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"arxiv_version","alias_value":"1206.0621v2","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1206.0621","created_at":"2026-05-18T03:51:01Z"},{"alias_kind":"pith_short_12","alias_value":"U4Y2B7SCQBUD","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_16","alias_value":"U4Y2B7SCQBUDFZJF","created_at":"2026-05-18T12:27:23Z"},{"alias_kind":"pith_short_8","alias_value":"U4Y2B7SC","created_at":"2026-05-18T12:27:23Z"}],"graph_snapshots":[{"event_id":"sha256:ef0a46980bd3d1ab3f17aee71b18a28e312839b3b5371c33f4c04db774c87f36","target":"graph","created_at":"2026-05-18T03:51:01Z","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 review recently derived NNLO QCD results for top-pair production at hadron colliders. We compare the size of the NNLO corrections in $q\\bar q\\to t\\bar t+X$ with the LO and NLO ones, and address the question of convergence of perturbative series. We compare the NLO and NNLO K-factors for the Tevatron.","authors_text":"Alexander Mitov, Michal Czakon, Peter Baernreuther","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-06-04T13:50:30Z","title":"Progress in top-pair production at hadron colliders"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1206.0621","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:b52a84fa66dc0cb610c7cfd6d6fe934d8503d24bcaf2d0dc26479c8c6511961c","target":"record","created_at":"2026-05-18T03:51:01Z","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":"7d28084abb9f12a26ccb2f066f69ed4685b9373a72e58d0673b278925fb33bd0","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2012-06-04T13:50:30Z","title_canon_sha256":"48967210a0e494b9dd2bcd30cc7c754d3f01a102822a0a86fa9bc28a4b60f719"},"schema_version":"1.0","source":{"id":"1206.0621","kind":"arxiv","version":2}},"canonical_sha256":"a731a0fe42806832e525712503cb8062882170e7c128390d4df6a61b51b4b800","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"a731a0fe42806832e525712503cb8062882170e7c128390d4df6a61b51b4b800","first_computed_at":"2026-05-18T03:51:01.604935Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T03:51:01.604935Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"xgE7Dqi4EvFGuEnZVn88UldToggbscyHRheiaDUwrjzIvL1hz4QF6sYgPcYDS0Rhvv4vqOE4Zz6f+8h+fIMnCA==","signature_status":"signed_v1","signed_at":"2026-05-18T03:51:01.605715Z","signed_message":"canonical_sha256_bytes"},"source_id":"1206.0621","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:b52a84fa66dc0cb610c7cfd6d6fe934d8503d24bcaf2d0dc26479c8c6511961c","sha256:ef0a46980bd3d1ab3f17aee71b18a28e312839b3b5371c33f4c04db774c87f36"],"state_sha256":"d6c6417bdf7b8a4ccb43754e641ea1a30319ecbd0f5d575038c1a2da0ef155de"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"xIJgV0UE5WTJE08CBQsF4TW3CUN/jgEbveeTpUaw7urv8xCafj9YRHVEYOvw2LnWr7jr9psAFU2NBY9OveNwBA==","signed_message":"bundle_sha256_bytes","signed_at":"2026-06-03T01:10:13.731630Z","bundle_sha256":"bcda24235bca5c8e117898e443e5877d5d5d1c4d387f812335d04213d2734135"}}