21 Result(s)
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Open AccessSearch for single vector-like B quark production and decay via B → bH( \( b\overline{b} \) ) in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search is presented for single production of a vector-like B quark decaying into a Standard Model b-quark and a Standard Model Higgs boson, which decays into a
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Open AccessSearch for a vector-like quark T′ → tH via the diphoton decay mode of the Higgs boson in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
A search for the electroweak production of a vector-like quark T′, decaying to a top quark and a Higgs boson is presented. The search is based on a sample of proton-proton collision events recorded at the LHC at
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Article
Open AccessSearch for a charged Higgs boson decaying into a heavy neutral Higgs boson and a W boson in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
A search for a charged Higgs boson H± decaying into a heavy neutral Higgs boson H and a W boson is presented. The analysis targets the H decay into a pair of tau leptons with at least one of them decaying hadroni...
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Open AccessSearch for single production of vector-like T quarks decaying into Ht or Zt in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
This paper describes a search for the single production of an up-type vector-like quark (T) decaying as T → Ht or T → Zt. The search utilises a dataset of pp collisions at
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Article
Open AccessInclusive and differential cross-sections for dilepton \( t\overline{t} \) production measured in \( \sqrt{s} \) = 13 TeV pp collisions with the ATLAS detector
Differential and double-differential distributions of kinematic variables of leptons from decays of top-quark pairs ( t ...
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Open AccessMeasurement of the properties of Higgs boson production at \( \sqrt{s} \) = 13 TeV in the H → γγ channel using 139 fb−1 of pp collision data with the ATLAS experiment
Measurements of Higgs boson production cross-sections are carried out in the diphoton decay channel using 139 fb−1 of pp collision data at ...
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Article
Open AccessSearch for CP violation using \( \textrm{t}\overline{\textrm{t}} \) events in the lepton+jets channel in pp collisions at \( \sqrt{s} \) = 13 TeV
Results are presented on a search for CP violation in the production and decay of top quark-antiquark pairs in the lepton+jets channel. The search is based on data from proton-proton collisions at ...
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Article
Open AccessSearch for heavy resonances decaying into a Z or W boson and a Higgs boson in final states with leptons and b-jets in 139 fb−1 of pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
This article presents a search for new resonances decaying into a Z or W boson and a 125 GeV Higgs boson h, and it targets the ...
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Article
Open AccessSearch for neutral long-lived particles in pp collisions at \( \sqrt{s} \) = 13 TeV that decay into displaced hadronic jets in the ATLAS calorimeter
A search for decays of pair-produced neutral long-lived particles (LLPs) is presented using 139 fb−1 of proton-proton collision data collected by the ATLAS detector at the LHC in 2015–2018 at a centre-of-mass ene...
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Open AccessSearch for supersymmetry in events with four or more charged leptons in 139 fb−1 of \( \sqrt{s} \) = 13 TeV pp collisions with the ATLAS detector
A search for supersymmetry in events with four or more charged leptons (electrons, muons and τ-leptons) is presented. The analysis uses a data sample corresponding to 139 fb−1 of proton-proton collisions delivere...
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Article
Open AccessMeasurement of the Z boson differential production cross section using its invisible decay mode (Z → \( \nu \overline{\nu} \) ) in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
Measurements of the total and differential fiducial cross sections for the Z boson decaying into two neutrinos are presented at the LHC in proton-proton collisions at a center-of-mass energy of 13 TeV. The dat...
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Article
Open AccessSearch for new phenomena with top quark pairs in final states with one lepton, jets, and missing transverse momentum in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for new phenomena with top quark pairs in final states with one isolated electron or muon, multiple jets, and large missing transverse momentum is performed. Signal regions are designed to search for ...
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Article
Open AccessMeasurements of top-quark pair single- and double-differential cross-sections in the all-hadronic channel in pp collisions at \( \sqrt{\mathrm{s}} \) = 13 TeV using the ATLAS detector
Differential cross-sections are measured for top-quark pair production in the all-hadronic decay mode, using proton-proton collision events collected by the ATLAS experiment in which all six decay jets are sep...
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Open AccessSearch for heavy neutral leptons in decays of W bosons produced in 13 TeV pp collisions using prompt and displaced signatures with the ATLAS detector
The problems of neutrino masses, matter-antimatter asymmetry, and dark matter could be successfully addressed by postulating right-handed neutrinos with Majorana masses below the electroweak scale. In this wor...
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Article
Open AccessMeasurement of ZZ production in the ℓℓνν final state with the ATLAS detector in pp collisions at \( \sqrt{s} \) = 13 TeV
This paper presents a measurement of ZZ production with the ATLAS detector at the Large Hadron Collider. The measurement is carried out in the final state with two charged leptons and two neutrinos, using data co...
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Open AccessSearch for a low-mass τ−τ+ resonance in association with a bottom quark in proton-proton collisions at \( \sqrt{s} \) = 13 TeV
A general search is presented for a low-mass τ−τ+ resonance produced in association with a bottom quark. The search is based on proton-proton collision data at a center-of-mass energy of 13 TeV collected by the C...
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Article
Open AccessSearch for heavy Majorana or Dirac neutrinos and right-handed W gauge bosons in final states with two charged leptons and two jets at \( \sqrt{s}=13 \) TeV with the ATLAS detector
A search for heavy right-handed Majorana or Dirac neutrinos NR and heavy right-handed gauge bosons WR is performed in events with a pair of energetic electrons or muons, with the same or opposite electric charge,...
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Article
Open AccessSearch for light bosons in decays of the 125 GeV Higgs boson in proton-proton collisions at \( \sqrt{s}=8 \) TeV
A search is presented for decays beyond the standard model of the 125 GeV Higgs bosons to a pair of light bosons, based on models with extended scalar sectors. Light boson masses between 5 and 62.5 GeV are pro...
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Article
Open AccessSearch for a heavy resonance decaying to a top quark and a vector-like top quark at \( \sqrt{s}=13 \) TeV
A search is presented for massive spin-1 Z′ resonances decaying to a top quark and a heavy vector-like top quark partner T. The search is based on a 2.6 fb−1 sample of proton-proton collisions at 13 TeV collected...
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Article
Open AccessSearch for anomalous \( t\overline t \) production in the highly-boosted all-hadronic final state
A search is presented for a massive particle, generically referred to as a Z′, decaying into a \( {\mathrm{t}}\overline {\mathrm{t}} \) ...
