{"paper":{"title":"Light quark loops in $K^\\pm \\to \\pi^\\pm \\nu\\bar\\nu$ from vector meson dominance and update on the Kaon Unitarity Triangle","license":"http://creativecommons.org/licenses/by/4.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"A. Soni, E. Lunghi","submitted_at":"2024-08-20T20:49:50Z","abstract_excerpt":"We use vector meson dominance to calculate non-perturbative contributions to the branching ratio of the rare decay $K^\\pm \\to \\pi^\\pm \\nu\\bar \\nu$ stemming from matrix elements involving up-quark loops. The importance of this observable as well as of $K^0 \\to \\pi^0 l^+ l^-$ and of the direct CP violation parameter $\\epsilon_K^{\\prime}$ is then discussed in the context of a Unitarity Triangle sqtudy based on Kaon sector observables only."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2408.11190","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2408.11190/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}