{"paper":{"title":"New predictions for $\\Lambda_b\\to\\Lambda_c$ semileptonic decays and tests of heavy quark symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Dean J. Robinson, Florian U. Bernlochner, William L. Sutcliffe, Zoltan Ligeti","submitted_at":"2018-08-28T18:01:03Z","abstract_excerpt":"The heavy quark effective theory makes model independent predictions for semileptonic $\\Lambda_b \\to \\Lambda_c$ decays in terms of a small set of parameters. No subleading Isgur-Wise function occurs at order $\\Lambda_{\\rm QCD}/m_{c,b}$, and only two sub-subleading functions enter at order $\\Lambda_{\\rm QCD}^2/m_c^2$. These features allow us to fit the form factors and decay rates calculated up to order $\\Lambda_{\\rm QCD}^2/m_c^2$ to LHCb data and lattice QCD calculations. We derive a significantly more precise standard model prediction for the ratio ${\\cal B}(\\Lambda_b\\to \\Lambda_c \\tau\\bar\\nu"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1808.09464","kind":"arxiv","version":2},"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"}