{"paper":{"title":"Phenomenology of $\\Lambda_b \\to \\Lambda_c \\tau \\bar{\\nu}_{\\tau}$ using lattice QCD calculations","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-lat"],"primary_cat":"hep-ph","authors_text":"Ahmed Rashed, Alakabha Datta, Saeed Kamali, Stefan Meinel","submitted_at":"2017-02-08T01:14:23Z","abstract_excerpt":"In a recent paper we studied the effect of new-physics operators with different Lorentz structures on the semileptonic $\\Lambda_b \\to \\Lambda_c \\tau \\bar{\\nu}_{\\tau}$ decay. This decay is of interest in light of the $R({D^{(*)}})$ puzzle in the semileptonic $\\bar{B} \\to D^{(*)} \\tau {\\bar\\nu}_\\tau$ decays. In this work we add tensor operators to extend our previous results and consider both model-independent new physics (NP) and specific classes of models proposed to address the $R({D^{(*)}})$ puzzle. We show that a measurement of $R(\\Lambda_c) = {\\cal B}[\\Lambda_b \\to \\Lambda_c \\tau \\bar{\\nu}"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1702.02243","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"}