{"paper":{"title":"New Physics in the Visible Final States of $B\\to D^{(*)}\\tau\\nu$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Dean J. Robinson, Michele Papucci, Zoltan Ligeti","submitted_at":"2016-10-06T20:00:29Z","abstract_excerpt":"We derive compact expressions for the helicity amplitudes of the many-body $B \\to D^{(*)}(\\to DY)\\tau(\\to X\\nu)\\nu$ decays, specifically for $X = \\ell \\nu$ or $\\pi$ and $Y = \\pi$ or $\\gamma$. We include contributions from all ten possible new physics four-Fermi operators with arbitrary couplings. Our results capture interference effects in the full phase space of the visible $\\tau$ and $D^*$ decay products which are missed in analyses that treat the $\\tau$ or $D^*$ or both as stable. The $\\tau$ interference effects are sizable, formally of order $m_\\tau/m_B$ for the standard model, and may be "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1610.02045","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"}