{"record_type":"pith_number_record","schema_url":"https://pith.science/schemas/pith-number/v1.json","pith_number":"pith:1994:ADQB4DYBZCCBVV3I5J2LZPB5Y5","short_pith_number":"pith:ADQB4DYB","schema_version":"1.0","canonical_sha256":"00e01e0f01c8841ad768ea74bcbc3dc7457ab6cab0fda21e3fb6852cec92e407","source":{"kind":"arxiv","id":"hep-ph/9409437","version":1},"attestation_state":"computed","paper":{"title":"Studying $\\varepsilon '/\\varepsilon$ in the Chiral Quark Model: $\\gamma_5$-Scheme Independence and NLO Hadronic Matrix Elements","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J.O. Eeg, M. Fabbrichesi, S. Bertolini","submitted_at":"1994-09-29T10:10:15Z","abstract_excerpt":"We study the $CP$-violating, $|\\Delta S| =1$ parameter $\\varepsilon '/\\varepsilon$ by computing the hadronic matrix elements in the chiral quark model. We estimate the coefficients of the next-to-leading order terms in the chiral expansion that correspond to the operators $Q_6$ and $Q_{11}$. We consider the impact of these corrections on the value of $\\varepsilon '/\\varepsilon$. We also investigate the possibility that the chiral quark model might drastically reduce the dimensional regularization $\\gamma_5$-scheme dependence of current evaluations of $\\varepsilon '/\\varepsilon$."},"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":"hep-ph/9409437","kind":"arxiv","version":1},"metadata":{"license":"","primary_cat":"hep-ph","submitted_at":"1994-09-29T10:10:15Z","cross_cats_sorted":[],"title_canon_sha256":"7471c01ceb5a51b0d949e3463b1d7309abeab981f9e2f2b81a520adad8af39f1","abstract_canon_sha256":"1e96d3330134ca3aab6311649ca5c8ac09cf6d03add89bf53f466f2cf85fed91"},"schema_version":"1.0"},"receipt":{"kind":"pith_receipt","key_id":"pith-v1-2026-05","algorithm":"ed25519","signed_at":"2026-05-18T04:37:44.721085Z","signature_b64":"uM8n/uIiAuBOhiykFmnciBslz8Te2u3zW7oFT1lMv7/i6TJVBMGEZhPLq2Y4w99bPJWTDseRwth7Z4klXN76CQ==","signed_message":"canonical_sha256_bytes","builder_version":"pith-number-builder-2026-05-17-v1","receipt_version":"0.3","canonical_sha256":"00e01e0f01c8841ad768ea74bcbc3dc7457ab6cab0fda21e3fb6852cec92e407","last_reissued_at":"2026-05-18T04:37:44.720517Z","signature_status":"signed_v1","first_computed_at":"2026-05-18T04:37:44.720517Z","public_key_fingerprint":"8d4b5ee74e4693bcd1df2446408b0d54"},"graph_snapshot":{"paper":{"title":"Studying $\\varepsilon '/\\varepsilon$ in the Chiral Quark Model: $\\gamma_5$-Scheme Independence and NLO Hadronic Matrix Elements","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J.O. Eeg, M. Fabbrichesi, S. Bertolini","submitted_at":"1994-09-29T10:10:15Z","abstract_excerpt":"We study the $CP$-violating, $|\\Delta S| =1$ parameter $\\varepsilon '/\\varepsilon$ by computing the hadronic matrix elements in the chiral quark model. We estimate the coefficients of the next-to-leading order terms in the chiral expansion that correspond to the operators $Q_6$ and $Q_{11}$. We consider the impact of these corrections on the value of $\\varepsilon '/\\varepsilon$. We also investigate the possibility that the chiral quark model might drastically reduce the dimensional regularization $\\gamma_5$-scheme dependence of current evaluations of $\\varepsilon '/\\varepsilon$."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9409437","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"},"aliases":[{"alias_kind":"arxiv","alias_value":"hep-ph/9409437","created_at":"2026-05-18T04:37:44.720603+00:00"},{"alias_kind":"arxiv_version","alias_value":"hep-ph/9409437v1","created_at":"2026-05-18T04:37:44.720603+00:00"},{"alias_kind":"doi","alias_value":"10.48550/arxiv.hep-ph/9409437","created_at":"2026-05-18T04:37:44.720603+00:00"},{"alias_kind":"pith_short_12","alias_value":"ADQB4DYBZCCB","created_at":"2026-05-18T12:25:47.102015+00:00"},{"alias_kind":"pith_short_16","alias_value":"ADQB4DYBZCCBVV3I","created_at":"2026-05-18T12:25:47.102015+00:00"},{"alias_kind":"pith_short_8","alias_value":"ADQB4DYB","created_at":"2026-05-18T12:25:47.102015+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/ADQB4DYBZCCBVV3I5J2LZPB5Y5","json":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5.json","graph_json":"https://pith.science/api/pith-number/ADQB4DYBZCCBVV3I5J2LZPB5Y5/graph.json","events_json":"https://pith.science/api/pith-number/ADQB4DYBZCCBVV3I5J2LZPB5Y5/events.json","paper":"https://pith.science/paper/ADQB4DYB"},"agent_actions":{"view_html":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5","download_json":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5.json","view_paper":"https://pith.science/paper/ADQB4DYB","resolve_alias":"https://pith.science/api/pith-number/resolve?arxiv=hep-ph/9409437&json=true","fetch_graph":"https://pith.science/api/pith-number/ADQB4DYBZCCBVV3I5J2LZPB5Y5/graph.json","fetch_events":"https://pith.science/api/pith-number/ADQB4DYBZCCBVV3I5J2LZPB5Y5/events.json","actions":{"anchor_timestamp":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5/action/timestamp_anchor","attest_storage":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5/action/storage_attestation","attest_author":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5/action/author_attestation","sign_citation":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5/action/citation_signature","submit_replication":"https://pith.science/pith/ADQB4DYBZCCBVV3I5J2LZPB5Y5/action/replication_record"}},"created_at":"2026-05-18T04:37:44.720603+00:00","updated_at":"2026-05-18T04:37:44.720603+00:00"}