Home > Top: ATLAS results from rarity to precision |
Talk | |
Title | Top: ATLAS results from rarity to precision |
Video | |
Author(s) | McFayden, Josh (speaker) (Lawrence Berkeley National Lab. (US)) |
Corporate author(s) | CERN. Geneva |
Imprint | 2020-06-09. - 3524. |
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 |