{"bundle_type":"pith_open_graph_bundle","bundle_version":"1.0","pith_number":"pith:2020:XGNCDD2MQPJ3SAPITTRS3BT6PB","short_pith_number":"pith:XGNCDD2M","canonical_record":{"source":{"id":"2006.12860","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-23T09:39:13Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d00a48d8cf1cd39d33d368be0966405bf70a26f381072be91d2917caa5570c91","abstract_canon_sha256":"b2f43a50248c3591a2f6703426b87775c344a43938b9e73fea999d61207091f9"},"schema_version":"1.0"},"canonical_sha256":"b99a218f4c83d3b901e89ce32d867e7845542e1c00d7d01ee97047020dc7245d","source":{"kind":"arxiv","id":"2006.12860","version":2},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12860","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12860v2","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12860","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_12","alias_value":"XGNCDD2MQPJ3","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_16","alias_value":"XGNCDD2MQPJ3SAPI","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_8","alias_value":"XGNCDD2M","created_at":"2026-07-05T01:56:30Z"}],"events":[{"event_type":"record_created","subject_pith_number":"pith:2020:XGNCDD2MQPJ3SAPITTRS3BT6PB","target":"record","payload":{"canonical_record":{"source":{"id":"2006.12860","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-23T09:39:13Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"d00a48d8cf1cd39d33d368be0966405bf70a26f381072be91d2917caa5570c91","abstract_canon_sha256":"b2f43a50248c3591a2f6703426b87775c344a43938b9e73fea999d61207091f9"},"schema_version":"1.0"},"canonical_sha256":"b99a218f4c83d3b901e89ce32d867e7845542e1c00d7d01ee97047020dc7245d","receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-07-05T01:56:30.453609Z","signature_b64":"pgPb1TfD5mYJNZIkBV1gjwG7If2n/VNI5jJoD7SVEqN8EbhTRCHslX9MbnVcZDlYtziAdLwRr6DNfLQfVF1GCw==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b99a218f4c83d3b901e89ce32d867e7845542e1c00d7d01ee97047020dc7245d","last_reissued_at":"2026-07-05T01:56:30.453194Z","signature_status":"signed_v1","first_computed_at":"2026-07-05T01:56:30.453194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"source_kind":"arxiv","source_id":"2006.12860","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":"2026-07-05T01:56:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"Tru2OrBofSd3rnpKGjbQMLaMVdXtScPqt7Cbjmyv3RHUjSs7Uf3Bq4jwsVyD0rkFamM+qhPkJSmNxL42m7NKCg==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:49:59.999009Z"},"content_sha256":"39cd09ab55aec0adb9dcd49fddc05845ffedb06e2b6217fde2af1ff9388368a6","schema_version":"1.0","event_id":"sha256:39cd09ab55aec0adb9dcd49fddc05845ffedb06e2b6217fde2af1ff9388368a6"},{"event_type":"graph_snapshot","subject_pith_number":"pith:2020:XGNCDD2MQPJ3SAPITTRS3BT6PB","target":"graph","payload":{"graph_snapshot":{"paper":{"title":"Loop-induced $ZZ$ production at the LHC: an improved description by matrix-element matching","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Claude Charlot, Congqiao Li, Qiang Li, Roberto Covarelli, Ying An, Zhe Guan","submitted_at":"2020-06-23T09:39:13Z","abstract_excerpt":"Loop-induced $ZZ$ production can be enhanced by the large gluon flux at the LHC, and thus should be taken into account in relevant experimental analyses. We present for the first time the results of a fully exclusive simulation based on the matrix elements for loop-induced $ZZ + 0,1,2$-parton processes at leading order, matched to parton showers. The new description is studied and validated by comparing it with well-established simulation with jets from parton showers. We find that the matched simulation provides a state-of-the-art description of the final state jets. We also briefly discuss t"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12860","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2006.12860/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":"2026-07-05T01:56:30Z","supersedes":[],"prev_event":null,"signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ntJI2Q5VShgtr14A2l/hMKx8BttSqrr7WJEpubwI469BvWpRT1DJm269L7adVQemJatgxdChhbKpqadsARiWCQ==","signed_message":"open_graph_event_sha256_bytes","signed_at":"2026-07-06T20:49:59.999403Z"},"content_sha256":"a0932532c3b90f1512341e0e0e2e809d32cce02de81a84f51ba14a6f4b8b0c21","schema_version":"1.0","event_id":"sha256:a0932532c3b90f1512341e0e0e2e809d32cce02de81a84f51ba14a6f4b8b0c21"}],"timestamp_proofs":[],"mirror_hints":[{"mirror_type":"https","name":"Pith Resolver","base_url":"https://pith.science","bundle_url":"https://pith.science/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/bundle.json","state_url":"https://pith.science/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/state.json","well_known_bundle_url":"https://pith.science/.well-known/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/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":"2026-07-06T20:50:00Z","links":{"resolver":"https://pith.science/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB","bundle":"https://pith.science/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/bundle.json","state":"https://pith.science/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/state.json","well_known_bundle":"https://pith.science/.well-known/pith/XGNCDD2MQPJ3SAPITTRS3BT6PB/bundle.json"},"state":{"state_type":"pith_open_graph_state","state_version":"1.0","pith_number":"pith:2020:XGNCDD2MQPJ3SAPITTRS3BT6PB","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":"b2f43a50248c3591a2f6703426b87775c344a43938b9e73fea999d61207091f9","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-23T09:39:13Z","title_canon_sha256":"d00a48d8cf1cd39d33d368be0966405bf70a26f381072be91d2917caa5570c91"},"schema_version":"1.0","source":{"id":"2006.12860","kind":"arxiv","version":2}},"source_aliases":[{"alias_kind":"arxiv","alias_value":"2006.12860","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"arxiv_version","alias_value":"2006.12860v2","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.2006.12860","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_12","alias_value":"XGNCDD2MQPJ3","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_16","alias_value":"XGNCDD2MQPJ3SAPI","created_at":"2026-07-05T01:56:30Z"},{"alias_kind":"pith_short_8","alias_value":"XGNCDD2M","created_at":"2026-07-05T01:56:30Z"}],"graph_snapshots":[{"event_id":"sha256:a0932532c3b90f1512341e0e0e2e809d32cce02de81a84f51ba14a6f4b8b0c21","target":"graph","created_at":"2026-07-05T01:56:30Z","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/2006.12860/integrity.json","findings":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938","summary":{"advisory":0,"by_detector":{},"critical":0,"informational":0}},"paper":{"abstract_excerpt":"Loop-induced $ZZ$ production can be enhanced by the large gluon flux at the LHC, and thus should be taken into account in relevant experimental analyses. We present for the first time the results of a fully exclusive simulation based on the matrix elements for loop-induced $ZZ + 0,1,2$-parton processes at leading order, matched to parton showers. The new description is studied and validated by comparing it with well-established simulation with jets from parton showers. We find that the matched simulation provides a state-of-the-art description of the final state jets. We also briefly discuss t","authors_text":"Claude Charlot, Congqiao Li, Qiang Li, Roberto Covarelli, Ying An, Zhe Guan","cross_cats":["hep-ex"],"headline":"","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-23T09:39:13Z","title":"Loop-induced $ZZ$ production at the LHC: an improved description by matrix-element matching"},"references":{"count":0,"internal_anchors":0,"resolved_work":0,"sample":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2006.12860","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":"sha256:39cd09ab55aec0adb9dcd49fddc05845ffedb06e2b6217fde2af1ff9388368a6","target":"record","created_at":"2026-07-05T01:56:30Z","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":"b2f43a50248c3591a2f6703426b87775c344a43938b9e73fea999d61207091f9","cross_cats_sorted":["hep-ex"],"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2020-06-23T09:39:13Z","title_canon_sha256":"d00a48d8cf1cd39d33d368be0966405bf70a26f381072be91d2917caa5570c91"},"schema_version":"1.0","source":{"id":"2006.12860","kind":"arxiv","version":2}},"canonical_sha256":"b99a218f4c83d3b901e89ce32d867e7845542e1c00d7d01ee97047020dc7245d","receipt":{"algorithm":"ed25519","builder_version":"pith-number-builder-2026-05-17-v1","canonical_sha256":"b99a218f4c83d3b901e89ce32d867e7845542e1c00d7d01ee97047020dc7245d","first_computed_at":"2026-07-05T01:56:30.453194Z","key_id":"pith-v1-2026-05","kind":"pith_receipt","last_reissued_at":"2026-07-05T01:56:30.453194Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","receipt_version":"0.3","signature_b64":"pgPb1TfD5mYJNZIkBV1gjwG7If2n/VNI5jJoD7SVEqN8EbhTRCHslX9MbnVcZDlYtziAdLwRr6DNfLQfVF1GCw==","signature_status":"signed_v1","signed_at":"2026-07-05T01:56:30.453609Z","signed_message":"canonical_sha256_bytes"},"source_id":"2006.12860","source_kind":"arxiv","source_version":2}}},"equivocations":[],"invalid_events":[],"applied_event_ids":["sha256:39cd09ab55aec0adb9dcd49fddc05845ffedb06e2b6217fde2af1ff9388368a6","sha256:a0932532c3b90f1512341e0e0e2e809d32cce02de81a84f51ba14a6f4b8b0c21"],"state_sha256":"328981446046f9f71c5e4a097beaf69e53af17097368e0f83e07e4b2ac9ebdb1"},"bundle_signature":{"signature_status":"signed_v1","algorithm":"ed25519","key_id":"pith-v1-2026-05","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54","signature_b64":"ObilaIjcB/DKf89fhmP1RU6KWX0P1Hl9difGkVAVcGn8YX6bJzsDw9iJYAhD9ld9D4Uvb0kYtTAC6z0eQFfCAg==","signed_message":"bundle_sha256_bytes","signed_at":"2026-07-06T20:50:00.001485Z","bundle_sha256":"ae2815d93a8d400a7c986017012f5cb61d3183fbc25dc3f5d665f802801cce55"}}