{"paper":{"title":"Leading Chiral Logarithms of $K_{S} \\to \\gamma \\gamma$ and $K_{S} \\to \\gamma~l^+ l^-$ at two Loops","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Karim Ghorbani","submitted_at":"2014-03-26T18:56:50Z","abstract_excerpt":"We obtain the leading divergences at two-loop order for the decays $K_{S} \\to \\gamma \\gamma$ and $K_{S} \\to \\gamma~\\l^+ \\l^-$ using only one-loop diagrams. We then find the double chiral logarithmic corrections to the decay branching ratio of $K_{S} \\to \\gamma \\gamma$ and to the decay rate for $K_{S} \\to \\gamma~\\l^+ \\l^-$. It turns out that these effects are numerically small and therefore make a very small enhancement on the branching ratio and decay rate. We also derive an expression for the corrections of type $\\log \\mu~\\times$ LEC. Numerical analysis done for the process $K_{S} \\to \\gamma "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.6791","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"}