{"paper":{"title":"The $B\\to D^{(*)} l\\nu_l$ decays in the pQCD approach with the Lattice QCD input","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Bing-Zhong Li, Ru-Min Wang, Ying-Ying Fan, Zhen-jun Xiao","submitted_at":"2015-05-27T01:20:12Z","abstract_excerpt":"In this paper, we studied the semileptonic decays $B \\to D^{(*)} l^- \\bar{\\nu}_l$ by using the \"pQCD+Lattice QCD\" method. We made the extrapolation for the six relevant form factors by using the input values obtained from the pQCD factorization approach in the low $q^2$ region of $0\\leq q^2 \\leq m_\\tau^2$, and the Lattice QCD input at the end-point $q^2=q^2_{\\rm max}$. We then calculated the ratios $R(D)$ and $R(D^*)$ of the branching ratios ${\\cal B}(B \\to D^{(*)} l^- \\bar{\\nu}_l)$, and found numerically that (1) the \"pQCD+Lattice QCD\" predictions for the branching ratios ${\\cal B}(B \\to D^{("},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1505.07169","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"}