Abstract
This paper reports on a search for heavy resonances decaying into WW, ZZ or WZ using proton–proton collision data at a centre-of-mass energy of sqrt{s}=13 TeV. The data, corresponding to an integrated luminosity of 139 mathrm{fb}^{1}, were recorded with the ATLAS detector from 2015 to 2018 at the Large Hadron Collider. The search is performed for final states in which one W or Z boson decays leptonically, and the other W boson or Z boson decays hadronically. The data are found to be described well by expected backgrounds. Upper bounds on the production cross sections of heavy scalar, vector or tensor resonances are derived in the mass range 300–5000 GeV within the context of Standard Model extensions with warped extra dimensions or including a heavy vector triplet. Production through gluon–gluon fusion, Drell–Yan or vector-boson fusion are considered, depending on the assumed model.
Highlights
Background process simulationBackground processes include W and Z boson production in association with jets (W + jets and Z + jets, collectively denoted by V +jets), top-quark production, non-resonant diboson production (W W, W Z and Z Z ), and multijet production
This paper reports on a search for heavy resonances X in the son mdeacsasyrainngpep3c0o0llGisieoVnstoat5√TseV=
Multiple overlaid pp collisions were simulated with the soft QCD processes of Pythia 8.186 [32] using the A3 set of tuned parameters [33] and the NNPDF23lo parton distribution function (PDF) set [34]
Summary
The ATLAS experiment [24,25] at the LHC is a multipurpose particle detector with a forward–backward symmetric cylindrical geometry and a near 4π coverage in solid angle. It consists of an inner tracking detector surrounded by a thin. The ATLAS experiment [24,25] at the LHC is a multipurpose particle detector with a forward–backward symmetric cylindrical geometry and a near 4π coverage in solid angle.. The ATLAS experiment [24,25] at the LHC is a multipurpose particle detector with a forward–backward symmetric cylindrical geometry and a near 4π coverage in solid angle.1 It consists of an inner tracking detector surrounded by a thin. The inner tracking detector (ID) covers the pseudorapidity range |η| < 2.5. During data-taking, as the instantaneous luminosity increased, the thresholds for unprescaled singlelepton triggers with tight isolations were increased in stages: the electron transverse energy (ET) threshold was increased from 24 to 26 GeV, and the muon transverse momentum ( pT). All events are required to contain a primary vertex with at least two associated tracks
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