{"paper":{"title":"Precision tests via radiative $\\mu$ and $\\tau$ leptonic decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"M. Fael, M. Passera","submitted_at":"2016-02-01T10:14:18Z","abstract_excerpt":"The branching fractions of radiative leptonic $\\tau$ decays $(\\tau \\to l \\nu \\bar{\\nu} \\gamma$, $l=e,\\mu)$ were recently measured by the Babar collaboration with a relative error of about 3%. The measurement of the branching ratio $\\mathcal{B} (\\tau \\to e \\bar{\\nu} \\nu \\gamma)$, for a minimum photon energy of 10 MeV in the $\\tau$ rest frame, differs from our recent SM prediction by 3.5 standard deviations, whereas our result agrees with Babar's value for $\\mathcal{B} (\\tau \\to \\mu \\bar{\\nu} \\nu \\gamma)$. Our predictions also agree with the measurement of $\\mathcal{B} (\\mu \\to e \\bar{\\nu} \\nu \\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1602.00457","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"}