{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2013:WJ2Z6KMFSP5B7LM2GFEOF6CITR","short_pith_number":"pith:WJ2Z6KMF","schema_version":"1.0","canonical_sha256":"b2759f298593fa1fad9a3148e2f8489c4b0a53b0eead58efb7acf05b9914b032","source":{"kind":"arxiv","id":"1312.3830","version":2},"attestation_state":"computed","paper":{"title":"Higgs Pair Production: 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":"Qiang Li, Qi-Shu Yan, Xiaoran Zhao","submitted_at":"2013-12-13T15:10:12Z","abstract_excerpt":"Higgs pair production is crucial for measuring the Higgs boson self-coupling. The dominant channel at hadron colliders is gluon fusion via heavy-quark loops. We present the results of a fully exclusive simulation of gluon fusion Higgs pair production based on the matrix elements for hh + 0, 1 partons including full heavy-quark loop dependence, matched to a parton shower. We examine and validate this new description by comparing it with (a) Higgs Effective Theory predictions, (b) exact hh + 0-parton sample showered by pythia, and (c) exact hh+1-parton distributions, by looking at the most relev"},"verification_status":{"content_addressed":true,"pith_receipt":true,"author_attested":false,"weak_author_claims":0,"strong_author_claims":0,"externally_anchored":false,"storage_verified":false,"citation_signatures":0,"replication_records":0,"graph_snapshot":true,"references_resolved":false,"formal_links_present":false},"canonical_record":{"source":{"id":"1312.3830","kind":"arxiv","version":2},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2013-12-13T15:10:12Z","cross_cats_sorted":["hep-ex"],"title_canon_sha256":"e87e4ea55dc62e62188b960f1dfbfc853c0767f0a079f388faef7cf530c2cc6d","abstract_canon_sha256":"d1cd471231ea5a49666737a303c5da15e66df5fc5b7e73a4870d99950bb49284"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T02:57:17.066298Z","signature_b64":"o8DMBD99hgcmlgQzr/5ssxkepE/CsdtWZoF5Wd2C+xGy96wBvHKCHGGpbaTPFjT3UAQFt87NKQKxXWw7pEvOBg==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"b2759f298593fa1fad9a3148e2f8489c4b0a53b0eead58efb7acf05b9914b032","last_reissued_at":"2026-05-18T02:57:17.065738Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T02:57:17.065738Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Higgs Pair Production: 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":"Qiang Li, Qi-Shu Yan, Xiaoran Zhao","submitted_at":"2013-12-13T15:10:12Z","abstract_excerpt":"Higgs pair production is crucial for measuring the Higgs boson self-coupling. The dominant channel at hadron colliders is gluon fusion via heavy-quark loops. We present the results of a fully exclusive simulation of gluon fusion Higgs pair production based on the matrix elements for hh + 0, 1 partons including full heavy-quark loop dependence, matched to a parton shower. We examine and validate this new description by comparing it with (a) Higgs Effective Theory predictions, (b) exact hh + 0-parton sample showered by pythia, and (c) exact hh+1-parton distributions, by looking at the most relev"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1312.3830","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"1312.3830","created_at":"2026-05-18T02:57:17.065819+00:00"},{"alias_kind":"arxiv_version","alias_value":"1312.3830v2","created_at":"2026-05-18T02:57:17.065819+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1312.3830","created_at":"2026-05-18T02:57:17.065819+00:00"},{"alias_kind":"pith_short_12","alias_value":"WJ2Z6KMFSP5B","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_16","alias_value":"WJ2Z6KMFSP5B7LM2","created_at":"2026-05-18T12:28:04.890932+00:00"},{"alias_kind":"pith_short_8","alias_value":"WJ2Z6KMF","created_at":"2026-05-18T12:28:04.890932+00:00"}],"events":[],"event_summary":{},"paper_claims":[],"inbound_citations":{"count":0,"internal_anchor_count":0,"sample":[]},"formal_canon":{"evidence_count":0,"sample":[],"anchors":[]},"links":{"html":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR","json":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR.json","graph_json":"https://pith.science/api/pith-number/WJ2Z6KMFSP5B7LM2GFEOF6CITR/graph.json","events_json":"https://pith.science/api/pith-number/WJ2Z6KMFSP5B7LM2GFEOF6CITR/events.json","paper":"https://pith.science/paper/WJ2Z6KMF"},"agent_actions":{"view_html":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR","download_json":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR.json","view_paper":"https://pith.science/paper/WJ2Z6KMF","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1312.3830&json=true","fetch_graph":"https://pith.science/api/pith-number/WJ2Z6KMFSP5B7LM2GFEOF6CITR/graph.json","fetch_events":"https://pith.science/api/pith-number/WJ2Z6KMFSP5B7LM2GFEOF6CITR/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR/action/timestamp_anchor","attest_storage":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR/action/storage_attestation","attest_author":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR/action/author_attestation","sign_citation":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR/action/citation_signature","submit_replication":"https://pith.science/pith/WJ2Z6KMFSP5B7LM2GFEOF6CITR/action/replication_record"}},"created_at":"2026-05-18T02:57:17.065819+00:00","updated_at":"2026-05-18T02:57:17.065819+00:00"}