{"paper":{"title":"Final State Interactions in $K\\to\\pi\\pi$ Decays: $\\Delta I=1/2$ Rule vs. $\\varepsilon^\\prime/\\varepsilon$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex","hep-lat"],"primary_cat":"hep-ph","authors_text":"Andrzej J. Buras, Jean-Marc Gerard","submitted_at":"2016-03-17T21:00:02Z","abstract_excerpt":"Dispersive effects from strong $\\pi\\pi$ rescattering in the final state (FSI) of weak $K\\to\\pi\\pi$ decays are revisited with the goal to have a global view on their {\\it relative} importance for the $\\Delta I=1/2$ rule and the ratio $\\varepsilon^\\prime/\\varepsilon$ in the Standard Model (SM). We point out that this goal cannot be reached within a pure effective (meson) field approach like chiral perturbation theory in which the dominant current-current operators governing the $\\Delta I=1/2$ rule and the dominant density-density (four-quark) operators governing $\\varepsilon^\\prime/\\varepsilon$ "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1603.05686","kind":"arxiv","version":4},"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"}