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Search for high-mass dilepton resonances using 139 fb⁻¹ of pp collision data collected at sqrt{s}=13 TeV with the ATLAS detector
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Search for high-mass dilepton resonances using 139 fb⁻¹ of pp collision data collected at sqrt{s}=13 TeV with the ATLAS detector
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A search for high-mass dielectron and dimuon resonances in the mass range of 250 GeV to 6 TeV is presented. The data were recorded by the ATLAS experiment in proton-proton collisions at a centre-of-mass energy of $\sqrt{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 E6-motivated $Z^\prime_\psi$ boson. Also presented are limits on Heavy Vector Triplet model couplings.
Forward citations
Cited by 12 Pith papers
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Search for dimuon resonance in the 35 to 75 GeV mass range using 140 fb$^{-1}$ of 13 TeV $pp$ collisions with the ATLAS detector
No dimuon resonance is found in 35-75 GeV with ATLAS's 140 fb^-1 Run-2 dataset; 95% CL fiducial cross-section limits range from 20 to 110 fb.
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$Z^\prime$ Portal Dark Matter with Observable $\Delta N_{\rm eff}$
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Characterisation at the HL-LHC of Long-lived Heavy Neutrinos in Gauge Extensions of the Standard Model
Displaced heavy-neutrino signals in LRSM and U(1)B−L remain accessible at the HL-LHC, with parton-level mass, lifetime, and AFB handles in low-background regions.
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The $Z'$-boson of the $B-L$ Supersymmetric Standard Model and its Large Hadron Collider Searches
In the BLSSM, Z' masses down to 2.24 TeV remain allowed when the boson is fat, leptophobic, or has large branching ratios to model-specific states while respecting LEP/SLC and LHC constraints.
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Probing TeV-Scale Inverse-Seesaw Leptogenesis and Majorana Dark Matter in $U(1)_{B-L}$ Models at Multi-TeV Muon Colliders
Inverse-seesaw U(1)_{B-L} model correlates leptogenesis, Majorana DM relic density, and neutrino masses with collider signatures in dilepton and single-lepton channels.
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Phenomenology of electroweak spin-1 resonances
Composite Higgs models with SU(2)_L × SU(2)_R predict spin-1 resonances mixing with electroweak bosons that remain viable at the LHC down to masses of about 1.5 TeV.
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In a U(1)_{B-L} Z' portal model with two nearly degenerate dark fermions, the conversion mechanism can produce the observed dark matter relic density while evading current collider and direct-detection constraints.
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Search for a new neutral gauge boson produced in association with one or two b jets and decaying into a pair of muons in proton-proton collisions at $\sqrt{s}$ = 13 TeV
No Z' boson decaying to muon pairs and produced with b jets appears in 138 fb⁻¹ of CMS data, yielding first 95% CL limits of 0.2–2 fb on σ×B×A×ε across 125–350 GeV.
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Search for Dilepton Resonances with the ATLAS Detector and Run 2 Data
Null result from dilepton resonance search in ATLAS Run 2 data sets 95% CL limits on fiducial cross section times branching ratio, with 4.5 TeV mass limit for E6-motivated Z'_ψ boson.
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Search for high-mass dilepton resonances in $pp$ collisions at $\sqrt{s}=13.6$ TeV combined with 13 TeV results using the ATLAS detector
Combined ATLAS Run 2+3 dilepton data yield no significant high-mass resonance and set 95% CL mass limits of 5.5, 5.1 and 4.8 TeV on Z′_SSM, Z′_χ and Z′_ψ.
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USMEFT as a tool for discovery of universal new physics at high luminosity LHC
Universal SMEFT fits to pseudo-data from neutral and charged Drell-Yan processes at HL-LHC can detect universal new physics and extract its properties stably across EFT truncation orders.
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Heavy neutral bosons and dark matter in the 3-3-1 model with axionlike particle
In the 331ALP model the second Higgs is predicted above 600 GeV and the Z' above 5.1 TeV, with dark matter mass related to the axion breaking scale under a residual Z2 symmetry.
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