{"paper":{"title":"Signature of lepton flavor universality violation in $B_s \\to D_s \\tau \\nu$ semileptonic decays","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"N Rajeev, Rupak Dutta","submitted_at":"2019-08-17T05:10:57Z","abstract_excerpt":"Deviation from the standard model prediction is observed in many semileptonic $B$ decays mediated via $b \\to c$ charged current interactions. In particular, current experimental measurements of the ratio of branching ratio $R_D$ and $R_{D^{\\ast}}$ in $B \\rightarrow D^{(*)}l \\nu$ decays disagree with standard model expectations at the level of about $4.1\\sigma$. Moreover, recent measurement of the ratio of branching ratio $R_{J/\\Psi}$ by LHCb, where $R_{J/\\Psi} = \\mathcal B(B_c \\to J/\\Psi\\,\\tau\\nu)/\\mathcal B(B_c \\to J/\\Psi\\,\\mu\\nu)$, is more than $2\\sigma$ away from the standard model predicti"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1908.06243","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/1908.06243/integrity.json","findings":[],"available":true,"detectors_run":[],"snapshot_sha256":"c28c3603d3b5d939e8dc4c7e95fa8dfce3d595e45f758748cecf8e644a296938"},"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"}