{"paper":{"title":"Measurement of the 4l Cross Section at the Z Resonance and Determination of the Branching Fraction of Z->4l in pp Collisions at sqrt(s) = 7 and 8 TeV with ATLAS","license":"http://arxiv.org/licenses/nonexclusive-distrib/1.0/","headline":"","cross_cats":[],"primary_cat":"hep-ex","authors_text":"ATLAS Collaboration","submitted_at":"2014-03-22T13:29:29Z","abstract_excerpt":"Measurements of four-lepton (4$\\ell$, $\\ell=e,\\mu$) production cross sections at the $Z$ resonance in $pp$ collisions at the LHC with the ATLAS detector are presented. For dilepton and four-lepton invariant mass region $m_{\\ell^+\\ell^-} > 5$ GeV and $80 < m_{4\\ell} < 100$ GeV, the measured cross sections are $76 \\pm 18 \\text { (stat) } \\pm 4 \\text { (syst) } \\pm 1.4 \\text { (lumi) }$ fb and $107 \\pm 9 \\text{ (stat) } \\pm 4 \\text{ (syst) } \\pm 3.0 \\text { (lumi) }$ fb at $\\sqrt s$ = 7 and 8 TeV, respectively. By subtracting the non-resonant 4$\\ell$ production contributions and normalizing with "},"claims":{"count":0,"items":[],"snapshot_sha256":"258153158e38e3291e3d48162225fcdb2d5a3ed65a07baac614ab91432fd4f57"},"source":{"id":"1403.5657","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"}