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Article
Report number arXiv:2402.16576 ; CERN-EP-2023-298
Title Search for high-mass resonances in final states with a ττ-lepton and missing transverse momentum with the ATLAS detector
Related titleSearch for high-mass resonances in final states with a tau-lepton and missing transverse momentum with the ATLAS detector
Author(s) ATLAS Collaboration  Mostrar todos os 2876 autores
Corporate Author(s) ATLAS Collaboration
Publication 2024-06-01
Imprint 26 Feb 2024
Number of pages 28
Note All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2018-37
In: Phys. Rev. D 109 (2024) 112008
DOI 10.1103/PhysRevD.109.112008 (publication)
Subject category Particle Physics - Experiment
Accelerator/Facility, Experiment CERN LHC ; ATLAS
Free keywords exotics ; experimental results ; Heavy boson ; tau plus MET ; High-mass resonance
Abstract A search for high-mass resonances decaying into a tau-lepton and a neutrino using proton–proton collisions at a center-of-mass energy of s=13s=13 TeV is presented. The full Run 2 data sample corresponding to an integrated luminosity of 139 fb11 recorded by the ATLAS experiment in the years 2015-2018 is analyzed. The tau-lepton is reconstructed in its hadronic decay modes and the total transverse momentum carried out by neutrinos is inferred from the reconstructed missing transverse momentum. The search for new physics is performed on the transverse mass between the tau-lepton and the missing transverse momentum. No excess of events above the Standard Model expectation is observed and upper exclusion limits are set on the Wτν production cross-section. Heavy W' vector bosons with masses up to 5.0 TeV are excluded at 95% confidence level, assuming that they have the same couplings as the Standard Model W boson. For non-universal couplings, W' bosons are excluded for masses less than 3.5 - 5.0 TeV, depending on the model parameters. In addition, model-independent limits on the visible cross-section times branching ratio are determined as a function of the lower threshold on the transverse mass of the tau-lepton and missing transverse momentum.
Related document supersedes: ATLAS-CONF-2021-025
Copyright/License Publication: © 2024-2025 CERN (License: CC BY 4.0), sponsored by SCOAP³
Preprint: © 2023-2025 CERN (License: CC-BY-4.0)



Corresponding record in: Inspire
Email contact: tatjana.lenz@cern.ch


 Record created 2024-02-26, last modified 2024-12-13


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