{"paper":{"title":"Analyzing lepton flavor universality in the decays $\\Lambda_b\\to\\Lambda_c^{(\\ast)}(\\frac12^\\pm,\\frac32^-) + \\ell\\,\\bar\\nu_\\ell$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Chien-Thang Tran, J\\\"urgen G. K\\\"orner, Mikhail A. Ivanov, Pietro Santorelli, Thomas Gutsche, Valery E. Lyubovitskij","submitted_at":"2018-07-30T11:53:35Z","abstract_excerpt":"Lepton flavor universality can be tested in the semileptonic decays $\\Lambda_b\\to \\Lambda_c^{(\\ast)}$ where $\\Lambda_c^{(\\ast)}$ denotes either the ground state $\\Lambda_c(2286)$ (with $J^P=1/2^+$) or its orbital excitations $\\Lambda_c(2595)$ (with $J^P=1/2^-$) and $\\Lambda_c(2625)$ (with $J^P=3/2^-$). We calculate the differential decay rates as well as the branching fractions of these decays for both tauonic and muonic modes with form factors obtained from a covariant confined quark model previously developed by us. We present results for the rate ratios of the tauonic and muonic modes which"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1807.11300","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"}