{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:2019:5W2W56NYYHCJFKCVYL2PVHWSES","short_pith_number":"pith:5W2W56NY","schema_version":"1.0","canonical_sha256":"edb56ef9b8c1c492a855c2f4fa9ed2248abd21d2073667d65e0ef5a578be3544","source":{"kind":"arxiv","id":"1902.08426","version":3},"attestation_state":"computed","paper":{"title":"Associated production of $\\chi_c$ pairs with a gluon in the collinear-factorization approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Antoni Szczurek, Izabela Babiarz, Wolfgang Sch\\\"afer","submitted_at":"2019-02-22T10:31:17Z","abstract_excerpt":"We calculate cross section for production of $\\chi_c$ pairs in proton-proton collisions. The cross section for the $g g \\to \\chi_{c J_1} \\chi_{c J_2}$ is considerably smaller (especially for $\\chi_{c 1} \\chi_{c 1}$ final state) than that obtained recently in the $k_T$-factorization approach. We calculate therefore next-to-leading order contributions with $\\chi_c$ pair and one extra associated (mini-)jet. We find these contributions to be much larger than those for the $2 \\to 2$ contribution. Especially the emission of a leading gluon (carrying a large momentum fraction of one of the incoming g"},"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":"1902.08426","kind":"arxiv","version":3},"metadata":{"license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","primary_cat":"hep-ph","submitted_at":"2019-02-22T10:31:17Z","cross_cats_sorted":[],"title_canon_sha256":"d9483ec892dbf77c31c67829e108804016e578959b5a146dae441846f2ad7488","abstract_canon_sha256":"557580d443024b5b2ee4f991fb75170f2c760818e58813bf9e9e5935eb2b4bc7"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-17T23:48:30.414344Z","signature_b64":"d7N0mHlwGxGsJgr+yy7fOiBg1YF1g8CHcPot3ovmDgXfl6UtaDEIj/6yJll1a2itab71T57YL3V8bzL/oCTyCQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"edb56ef9b8c1c492a855c2f4fa9ed2248abd21d2073667d65e0ef5a578be3544","last_reissued_at":"2026-05-17T23:48:30.413803Z","signature_status":"signed_v1","first_computed_at":"2026-05-17T23:48:30.413803Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Associated production of $\\chi_c$ pairs with a gluon in the collinear-factorization approach","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Antoni Szczurek, Izabela Babiarz, Wolfgang Sch\\\"afer","submitted_at":"2019-02-22T10:31:17Z","abstract_excerpt":"We calculate cross section for production of $\\chi_c$ pairs in proton-proton collisions. The cross section for the $g g \\to \\chi_{c J_1} \\chi_{c J_2}$ is considerably smaller (especially for $\\chi_{c 1} \\chi_{c 1}$ final state) than that obtained recently in the $k_T$-factorization approach. We calculate therefore next-to-leading order contributions with $\\chi_c$ pair and one extra associated (mini-)jet. We find these contributions to be much larger than those for the $2 \\to 2$ contribution. Especially the emission of a leading gluon (carrying a large momentum fraction of one of the incoming g"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1902.08426","kind":"arxiv","version":3},"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":"1902.08426","created_at":"2026-05-17T23:48:30.413888+00:00"},{"alias_kind":"arxiv_version","alias_value":"1902.08426v3","created_at":"2026-05-17T23:48:30.413888+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.1902.08426","created_at":"2026-05-17T23:48:30.413888+00:00"},{"alias_kind":"pith_short_12","alias_value":"5W2W56NYYHCJ","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_16","alias_value":"5W2W56NYYHCJFKCV","created_at":"2026-05-18T12:33:10.108867+00:00"},{"alias_kind":"pith_short_8","alias_value":"5W2W56NY","created_at":"2026-05-18T12:33:10.108867+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/5W2W56NYYHCJFKCVYL2PVHWSES","json":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES.json","graph_json":"https://pith.science/api/pith-number/5W2W56NYYHCJFKCVYL2PVHWSES/graph.json","events_json":"https://pith.science/api/pith-number/5W2W56NYYHCJFKCVYL2PVHWSES/events.json","paper":"https://pith.science/paper/5W2W56NY"},"agent_actions":{"view_html":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES","download_json":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES.json","view_paper":"https://pith.science/paper/5W2W56NY","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=1902.08426&json=true","fetch_graph":"https://pith.science/api/pith-number/5W2W56NYYHCJFKCVYL2PVHWSES/graph.json","fetch_events":"https://pith.science/api/pith-number/5W2W56NYYHCJFKCVYL2PVHWSES/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES/action/timestamp_anchor","attest_storage":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES/action/storage_attestation","attest_author":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES/action/author_attestation","sign_citation":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES/action/citation_signature","submit_replication":"https://pith.science/pith/5W2W56NYYHCJFKCVYL2PVHWSES/action/replication_record"}},"created_at":"2026-05-17T23:48:30.413888+00:00","updated_at":"2026-05-17T23:48:30.413888+00:00"}