{"paper":{"title":"Update of the Search for the Neutrinoless Decay $\\tau\\to \\mu\\gamma$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"A. Anastassov, CLEO Collaboration, et al","submitted_at":"1999-08-06T15:15:17Z","abstract_excerpt":"We present an update of the search for the lepton family number violating decay $\\tau \\to \\mu\\gamma$ using a complete CLEO II data sample of 12.6 million $\\tau^+\\tau^-$ pairs. No evidence of a signal has been found and the corresponding upper limit is $ \\BR(\\tau \\to \\mu\\gamma) < 1.0 \\times 10^{-6} $ at 90% CL, significantly smaller than previous limits. All quoted results are preliminary."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/9908025","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"}