{"paper":{"title":"Measurement of the branching ratio of the decay D^0 -> \\pi^-\\mu^+\\nu relative to D^0 -> K^-\\mu^+\\nu","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"FOCUS collaboration","submitted_at":"2004-10-23T18:39:59Z","abstract_excerpt":"We present a new measurement of the branching ratio of the Cabibbo suppressed decay D^0\\to \\pi^-\\mu^+\\nu relative to the Cabibbo favored decay D^0\\to K^-\\mu^+\\nu and an improved measurement of the ratio |\\frac{f_+^{\\pi}(0)}{f_+^{K}(0)}|. Our results are 0.074 \\pm 0.008 \\pm 0.007 for the branching ratio and 0.85 \\pm 0.04 \\pm 0.04 \\pm 0.01 for the form factor ratio, respectively."},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ex/0410068","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"}