Home > Top: ATLAS results from rarity to precision |
Talk | ||||||
Title | Top: ATLAS results from rarity to precision | |||||
Video | Loading
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Author(s) | McFayden, Josh (speaker) (Lawrence Berkeley National Lab. (US)) | |||||
Corporate author(s) | CERN. Geneva | |||||
Imprint | 2020-06-09. - 0:58:44. | |||||
Series | (LHC Seminar) | |||||
Lecture note | on 2020-06-09T11:00:00 | |||||
Subject category | LHC Seminar | |||||
Abstract | The abundant production of top quark events at the LHC allows testing the standard model in unprecedented ways. The relative probability for W bosons to decay to a muon or a tau-lepton is measured, selecting events in which a top quark pair decays to two opposite-sign leptons plus jets through W bosons. The measurement confirms the universality of tau and muon couplings to the W boson with the highest precision, to date. In a second analysis, charged leptons are again used to select di- and multi-lepton final states with high jet multiplicity. The kinematic, multiplicity and flavour properties are input to a multivariate discriminant to recognise and establish evidence for the extremely rare production of four top quarks in an event.
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Copyright/License | © 2020-2024 CERN | |||||
Submitted by | angela.ricci@cern.ch |