{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2011:QDHJ4RZKNTEEXZFJHL3AKGUYMP","short_pith_number":"pith:QDHJ4RZK","canonical_record":{"source":{"id":"1101.0642","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-01-04T02:39:56Z","cross_cats_sorted":[],"title_canon_sha256":"c860b5755a8ae7e956ae3b5cd242cefd55f45f056e061a12c8afb5892a3f1401","abstract_canon_sha256":"7903aaf8bc78f734ac5486661f0154f84b5c5d9a4ef1a2b06722193953776673"},"schema_version":"1.0"},"canonical_sha256":"80ce9e472a6cc84be4a93af6051a9863c6ef7bebf4bb7818a295531be53fa20f","source":{"kind":"arxiv","id":"1101.0642","version":1},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.0642","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1101.0642v1","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.0642","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"QDHJ4RZKNTEE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QDHJ4RZKNTEEXZFJ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QDHJ4RZK","created_at":"2026-05-18T12:26:39Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2011:QDHJ4RZKNTEEXZFJHL3AKGUYMP","target":"record","payload":{"canonical_record":{"source":{"id":"1101.0642","kind":"arxiv","version":1},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-01-04T02:39:56Z","cross_cats_sorted":[],"title_canon_sha256":"c860b5755a8ae7e956ae3b5cd242cefd55f45f056e061a12c8afb5892a3f1401","abstract_canon_sha256":"7903aaf8bc78f734ac5486661f0154f84b5c5d9a4ef1a2b06722193953776673"},"schema_version":"1.0"},"canonical_sha256":"80ce9e472a6cc84be4a93af6051a9863c6ef7bebf4bb7818a295531be53fa20f","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:04:13.648692Z","signature_b64":"S+RB8mMPwfAQhH3gS0MjpY1936qsKTpDMla/IjxQXW46LcUV8PjzGF2If8mgHA7xEzDXc74mzSvAf7ItYaTVBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"80ce9e472a6cc84be4a93af6051a9863c6ef7bebf4bb7818a295531be53fa20f","last_reissued_at":"2026-05-18T02:04:13.647948Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:04:13.647948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"1101.0642","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":"2026-05-18T02:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"QXY+4ctiUf9lx1Jqhhpda4c5MSUZs53P0YHcglGvPptFoS5kmrByZOBi3nna6au2nVK5vWEsBG3LOL9vYYs6Ag==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:38:53.328941Z"},"content_sha256":"10d18326d502274e3d69b148b0511d182a2d3a1326028a597436602df86fe551","schema_version":"1.0","event_id":"sha256:10d18326d502274e3d69b148b0511d182a2d3a1326028a597436602df86fe551"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2011:QDHJ4RZKNTEEXZFJHL3AKGUYMP","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Double-real radiation in hadronic top quark pair production as a proof of a certain concept","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"M. Czakon","submitted_at":"2011-01-04T02:39:56Z","abstract_excerpt":"Using the recently introduced STRIPPER approach to double-real radiation, we evaluate the total cross sections for the main partonic channels of the next-to-next-to leading order contributions to top quark pair production in hadronic collisions: gg -> ttgg, gg -> ttqq, qq -> ttgg, qq -> ttq'q', q' != q. The results are given as Laurent expansions in epsilon, the parameter of dimensional regularization, at a number of m/ECM values spreading the entire variation range, with m the mass of the top quark and ECM the center-of-mass energy. We describe the details of our implementation and demonstrat"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.0642","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":"2026-05-18T02:04:13Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"l6rMfcaSHz22Tg0jUr3HZX21w098XNq1Nrh6rA0J+L9vydqIPpTTZx7c20L4+fMqTpr0w9/CqrxdFG0NnCwGDA==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-05-28T11:38:53.329286Z"},"content_sha256":"dc41760437c09fd9756633c5bab3ef676a2da402a7f67457518588c67baf8e7f","schema_version":"1.0","event_id":"sha256:dc41760437c09fd9756633c5bab3ef676a2da402a7f67457518588c67baf8e7f"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/bundle.json","state_url":"https://pith.science/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/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":"2026-05-28T11:38:53Z","links":{"resolver":"https://pith.science/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP","bundle":"https://pith.science/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/bundle.json","state":"https://pith.science/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/state.json","well_known_bundle":"https://pith.science/.well-known/pith/QDHJ4RZKNTEEXZFJHL3AKGUYMP/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2011:QDHJ4RZKNTEEXZFJHL3AKGUYMP","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":"7903aaf8bc78f734ac5486661f0154f84b5c5d9a4ef1a2b06722193953776673","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-01-04T02:39:56Z","title_canon_sha256":"c860b5755a8ae7e956ae3b5cd242cefd55f45f056e061a12c8afb5892a3f1401"},"schema_version":"1.0","source":{"id":"1101.0642","kind":"arxiv","version":1}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"1101.0642","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"arxiv_version","alias_value":"1101.0642v1","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1101.0642","created_at":"2026-05-18T02:04:13Z"},{"alias_kind":"pith_short_12","alias_value":"QDHJ4RZKNTEE","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_16","alias_value":"QDHJ4RZKNTEEXZFJ","created_at":"2026-05-18T12:26:39Z"},{"alias_kind":"pith_short_8","alias_value":"QDHJ4RZK","created_at":"2026-05-18T12:26:39Z"}],"graph_snapshots":[{"event_id":"sha256:dc41760437c09fd9756633c5bab3ef676a2da402a7f67457518588c67baf8e7f","target":"graph","created_at":"2026-05-18T02:04:13Z","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":"Using the recently introduced STRIPPER approach to double-real radiation, we evaluate the total cross sections for the main partonic channels of the next-to-next-to leading order contributions to top quark pair production in hadronic collisions: gg -> ttgg, gg -> ttqq, qq -> ttgg, qq -> ttq'q', q' != q. The results are given as Laurent expansions in epsilon, the parameter of dimensional regularization, at a number of m/ECM values spreading the entire variation range, with m the mass of the top quark and ECM the center-of-mass energy. We describe the details of our implementation and demonstrat","authors_text":"M. Czakon","cross_cats":[],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-01-04T02:39:56Z","title":"Double-real radiation in hadronic top quark pair production as a proof of a certain concept"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1101.0642","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":"sha256:10d18326d502274e3d69b148b0511d182a2d3a1326028a597436602df86fe551","target":"record","created_at":"2026-05-18T02:04:13Z","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":"7903aaf8bc78f734ac5486661f0154f84b5c5d9a4ef1a2b06722193953776673","cross_cats_sorted":[],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2011-01-04T02:39:56Z","title_canon_sha256":"c860b5755a8ae7e956ae3b5cd242cefd55f45f056e061a12c8afb5892a3f1401"},"schema_version":"1.0","source":{"id":"1101.0642","kind":"arxiv","version":1}},"canonical_sha256":"80ce9e472a6cc84be4a93af6051a9863c6ef7bebf4bb7818a295531be53fa20f","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"80ce9e472a6cc84be4a93af6051a9863c6ef7bebf4bb7818a295531be53fa20f","first_computed_at":"2026-05-18T02:04:13.647948Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-05-18T02:04:13.647948Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"S+RB8mMPwfAQhH3gS0MjpY1936qsKTpDMla/IjxQXW46LcUV8PjzGF2If8mgHA7xEzDXc74mzSvAf7ItYaTVBg==","signature_status":"signed_v1","signed_at":"2026-05-18T02:04:13.648692Z","signed_message":"canonical_sha256_bytes"},"source_id":"1101.0642","source_kind":"arxiv","source_version":1}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:10d18326d502274e3d69b148b0511d182a2d3a1326028a597436602df86fe551","sha256:dc41760437c09fd9756633c5bab3ef676a2da402a7f67457518588c67baf8e7f"],"state_sha256":"ae989174f4ee391bb328fd6ae8868619e76fa3a0950519792e943e8a51183ea5"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"p8BbTGrh2nMEbod1TBgapL9u4pIuRzUD/2o1JsJj/+2sQg4iYIRqWsx97on6I4kipSwGsb7I9+CdzkoJVbrgCg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-05-28T11:38:53.331269Z","bundle_sha256":"bf1902f1b63c126f2a6121c13281c0da81a73085852329b9bd0dd28ff9480a59"}}