{"paper":{"title":"Lepton pair emission in the top quark decay $t \\to bW^+\\ell^-\\ell^+$","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ph","authors_text":"Gabriel Lopez Castro, J. Lorenzo Diaz-Cruz, Nestor Quintero","submitted_at":"2014-03-12T17:45:28Z","abstract_excerpt":"The heaviness of the top quark makes its 2-body decay mode $t \\to bW^+$ to be dominant, at such level that hardly any other decay mode reaches a detectable branching ratio (BR) within the SM. Here we study the decay $t \\to bW^+\\ell^-\\ell^+$ ($\\ell=e, \\mu, \\tau$), which diverges for massless leptons, and it can reach a BR $\\sim \\mathcal{O}(10^{-5}\\sim 10^{-6})$ for reasonable values of the low energy cut in the lepton-pair invariant mass. This rate surpasses almost any other rare decays such as $t \\to cX$ ($X=\\gamma,Z,g,H, W^+W^-$), and thus offers the possibility of being detectable. Furthermo"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.3044","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"}