Karlsruhe 2024 – scientific programme
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T: Fachverband Teilchenphysik
T 31: Methods in particle physics 3 (lepton reconstruction)
T 31.1: Talk
Tuesday, March 5, 2024, 16:00–16:15, Geb. 20.30: 2.066
Measurement of the tau lepton identification efficiencies using LHC Run 3 data with the ATLAS detector — •Baktash Amini, Christian Weiser, Karsten Köneke, and Karl Jakobs — Albert-Ludwigs-Universität Freiburg
Final states with tau lepton decays are crucial components of the ATLAS physics program at the LHC. Efficient and precise reconstruction and identification of tau leptons are required in order to obtain the best possible measurements of processes containing tau leptons. This talk presents measurements of the identification efficiencies of tau leptons that decay to a single neutrino and hadrons (τhad), using LHC data recorded with the ATLAS detector during proton-proton collisions at √s=13.6 TeV. The so-called Tag-and-Probe method is employed using Z boson decays into two tau leptons, where the “Tag” is the tau lepton that decays to two neutrinos and an electron or muon (τlep), while the “Probe” is the τhad decay of interest (Z→τlepτhad).
Keywords: Tau lepton; Identification efficiency; Tag-and-Probe method