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      Search for high-mass dilepton resonances using 139 fb(-1) of pp collision data collected at √s = 13 TeV with the ATLAS detector

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      Creators
      Aaboud, M.
      Aggarwal, A.
      Caron, S.
      Colasurdo, L.
      Groot, N. de
      Fabiani, V.
      Filthaut, F.
      Igonkina, O.B.
      Ilic, N.
      Konig, A.C.
      Diaz, L. Pedraza
      Schouwenberg, J.F.P.
      Date of Archiving
      2019
      Archive
      HEPData
      Related links
      https://www.hepdata.net/record/ins1725190
      DOI
      https://doi.org/10.17182/hepdata.88425.v3
      Related publications
      Search for high-mass dilepton resonances using 139 fb(-1) of pp collision data collected at √s = 13 TeV with the ATLAS detector  
      Publication type
      Dataset
      Access level
      Open access
      Please use this identifier to cite or link to this item: https://hdl.handle.net/2066/209326   https://hdl.handle.net/2066/209326
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      Organization
      High Energy Physics
      Experimental High Energy Physics
      Audience(s)
      Physics
      Key words
      monte-carlo; bosons; decay; Astronomy & Astrophysics; Physics
      Abstract
      A search for high-mass dielectron and dimuon resonances in the mass range of 250 GeV to 6TeV is presented. The data were recorded by the ATLAS experiment in proton-proton collisions at a centre-ofmass energy of root s = 13 TeV during Run 2 of the Large Hadron Collider and correspond to an integrated luminosity of 139 fb(-1). A functional form is fitted to the dilepton invariant-mass distribution to model the contribution from background processes, and a generic signal shape is used to determine the significance of observed deviations from this background estimate. No significant deviation is observed and upper limits are placed at the 95% confidence level on the fiducial cross-section times branching ratio for various resonance width hypotheses. The derived limits are shown to be applicable to spin-0, spin-1 and spin-2 signal hypotheses. For a set of benchmark models, the limits are converted into lower limits on the resonance mass and reach 4.5 TeV for the E-6-motivated Z(psi)' boson. Also presented are limits on Heavy Vector Triplet model couplings. (C) 2019 The Author. Published by Elsevier B.V.
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