{"paper":{"title":"$\\Lambda_b$ decays into $\\Lambda_c^*\\ell\\bar{\\nu}_\\ell$ and $\\Lambda_c^*\\pi^-$ $[\\Lambda_c^*=\\Lambda_c(2595)$ \\& $\\Lambda_c(2625)]$ and heavy quark spin symmetry","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"J. Nieves, R. Pavao, S. Sakai","submitted_at":"2019-03-28T12:16:43Z","abstract_excerpt":"We study the implications for $\\Lambda_b \\to \\Lambda_c^*\\ell\\bar{\\nu}_\\ell$ and $\\Lambda_b \\to \\Lambda_c^*\\pi^-$ $[\\Lambda_c^*=\\Lambda_c(2595)$ and $\\Lambda_c(2625)]$ decays that can be deduced from heavy quark spin symmetry (HQSS). Identifying the odd parity $\\Lambda_c(2595)$ and $\\Lambda_c(2625)$ resonances as HQSS partners, with total angular momentum--parity $j_q^P=1^-$ for the light degrees of freedom, we find that the ratios $\\Gamma(\\Lambda_b\\rightarrow\\Lambda_c(2595)\\pi^-)/\\Gamma(\\Lambda_b\\rightarrow\\Lambda_c(2625)\\pi^-)$ and $\\Gamma(\\Lambda_b\\rightarrow \\Lambda_c(2595) \\ell \\bar{\\nu}_\\"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1903.11911","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"}