{"paper":{"title":"$b \\to c\\tau\\bar\\nu$ decays in supersymmetry with $R$-parity violation","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Dong-Yang Wang, Xing-Bo Yuan, Ya-Dong Yang","submitted_at":"2019-05-21T02:21:23Z","abstract_excerpt":"In the past few years, several hints of lepton flavour universality (LFU) violation have emerged in the $b \\to c \\tau \\bar\\nu$ and $b \\to s \\ell^+ \\ell^-$ data. Quite recently, the Belle Collaboration has reported the first measurement of the $D^*$ longitudinal polarization fraction in the $B \\to D^* \\tau \\bar\\nu$ decay. Motivated by this intriguing result, together with the recent measurements of $R_{J/\\psi}$ and $\\tau$ polarization, we study $b \\to c \\tau \\bar\\nu$ decays in the Supersymmetry (SUSY) with $R$-parity violation (RPV). We consider $B \\to D^{(*)} \\tau \\bar\\nu$, $B_c \\to \\eta_c \\ta"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1905.08784","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":""},"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"}