{"paper":{"title":"Model independent results for $B\\to D_1(2420)\\ell\\bar\\nu$ and $B\\to D_2^*(2460)\\ell\\bar\\nu$ at order $\\Lambda_{QCD}/m_{c,b}$","license":"","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Adam K. Leibovich, Iain W. Stewart, Mark B. Wise, Zoltan Ligeti","submitted_at":"1997-03-03T04:35:12Z","abstract_excerpt":"Exclusive semileptonic B decays into $D_1$ and $D_2^*$ mesons are investigated including order $\\Lambda_{QCD}/m_{c,b}$ corrections using the heavy quark effective theory. At zero recoil, the $\\Lambda_{QCD}/m_{c,b}$ corrections can be written in terms of the leading Isgur-Wise function for these transitions, $\\tau$, and known meson mass splittings. We obtain an almost model independent prediction for the shape of the spectrum near zero recoil, including order $\\Lambda_{QCD}/m_{c,b}$ corrections. We determine $\\tau(1)$ from the measured $B\\to D_1\\ell\\bar\\nu$ branching ratio. Implications for B d"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"hep-ph/9703213","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"}