{"paper":{"title":"Multi-lepton probes of new physics and lepton-universality in top-quark interactions","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":["hep-ex"],"primary_cat":"hep-ph","authors_text":"Amarjit Soni, Jose Wudka, Kuntal Pal, Shaouly Bar-Shalom, Yoav Afik","submitted_at":"2021-11-26T19:00:02Z","abstract_excerpt":"We explore the sensitivity to new physics (NP) in the associated production of top-quarks with leptons $pp \\to t \\bar t \\ell^+ \\ell^-$, which leads to the multi-leptons signals $pp \\to n \\ell + {\\tt jets} + \\not\\!\\! E_T$, where $n = 2,3,4$. The NP is parameterized via 4-Fermi effective $t\\bar{t} \\ell^+ \\ell^-$ contact interactions of various types, which are generated by multi-TeV heavy scalar, vector or tensor exchanges in $t \\bar t \\to \\ell^+ \\ell^-$; we focus on the case of $\\ell=e,\\mu$. We match the 4-Fermi $t t \\ell \\ell$ terms to the SMEFT operators and also give examples of specific und"},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"2111.13711","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":""},"integrity":{"clean":true,"summary":{"advisory":0,"critical":0,"by_detector":{},"informational":0},"endpoint":"/pith/2111.13711/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"}