{"paper":{"title":"Kaon Spontaneous CP Violation Reevaluated","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Masayasu Harada, Paul H. Frampton","submitted_at":"1998-03-21T18:45:01Z","abstract_excerpt":"The CP parameters $\\epsilon$ and $\\epsilon'/\\epsilon$ are calculated in the aspon model of spontaneous CP violation, a model which solves the strong CP problem. A new range for the scale of spontaneous breaking of CP is found. It is shown that $\\epsilon'/\\epsilon$ is suppressed by $\\sim x^2 v^2/(\\kappa^2 \\sin^5 \\theta_C) \\sim 5 \\times 10^{-3}$ relative to the Standard Model. If experiment finds that $\\epsilon'/\\epsilon$ is $10^{-4}$ or greater in magnitude, it will mean that the present approach to spontaneous CP violation is excluded."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9803416","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"}