84 Result(s)
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Open AccessSearch for dark matter produced in association with a Higgs boson decaying to tau leptons at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for dark matter produced in association with a Higgs boson in final states with two hadronically decaying τ-leptons and missing transverse momentum is presented. The analysis uses 139 fb−1 of proton-prot...
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Open AccessSearch for Majorana neutrinos in same-sign WW scattering events from pp collisions at \(\sqrt{s}=13\) TeV
A search for Majorana neutrinos in same-sign WW scattering events is presented. The analysis uses \(\sqrt{s}= 13\) ...
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Open AccessSearches for exclusive Higgs and Z boson decays into a vector quarkonium state and a photon using 139 fb \(^{-1}\) of ATLAS \(\sqrt{s}=13\) TeV proton–proton collision data
Searches for the exclusive decays of Higgs and Z bosons into a vector quarkonium state and a photon are performed in the $$\mu ^+\mu ^-\,\gamm...
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Open AccessSearch for a light charged Higgs boson in t → H±b decays, with H± → cb, in the lepton+jets final state in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for a charged Higgs boson, H±, produced in top-quark decays, t → H±b, is presented. The search targets H± decays into a bottom and a charm quark, H± → cb. The analysis focuses on a selection enriched in ...
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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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Open AccessA search for heavy Higgs bosons decaying into vector bosons in same-sign two-lepton final states in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for heavy Higgs bosons produced in association with a vector boson and decaying into a pair of vector bosons is performed in final states with two leptons (electrons or muons) of the same electric cha...
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Open AccessSearch for \( t\overline{t}H/A\to t\overline{t}t\overline{t} \) production in the multilepton final state in proton–proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for a new heavy scalar or pseudo-scalar Higgs boson (H/A) produced in association with a pair of top quarks, with the Higgs boson decaying into a pair of top quarks (H/A →
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Article
Open AccessSearch for a new scalar resonance in flavour-changing neutral-current top-quark decays t → qX (q = u, c), with X → \( b\overline{b} \) , in proton-proton collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for flavour-changing neutral-current decays of a top quark into an up-type quark (either up or charm) and a light scalar particle X decaying into a bottom anti-bottom quark pair is presented. The search ...
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Article
Open AccessSearch for dark matter produced in association with a dark Higgs boson decaying into W+W− in the one-lepton final state at \( \sqrt{s} \) = 13 TeV using 139 fb−1 of pp collisions recorded with the ATLAS detector
Several extensions of the Standard Model predict the production of dark matter particles at the LHC. A search for dark matter particles produced in association with a dark Higgs boson decaying into W+W− in the ...
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Open AccessSearch for third-generation vector-like leptons in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for vector-like leptons in multilepton (two, three, or four-or-more electrons plus muons) final states with zero or more hadronic τ-lepton decays is presented. The search is performed using a dataset cor...
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Open AccessSearch for dark matter produced in association with a single top quark and an energetic W boson in \(\sqrt{s}=\) 13 TeV \(pp\) collisions with the ATLAS detector
This paper presents a search for dark matter, \(\chi \) χ , using events wit...
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Open AccessSearch for resonant and non-resonant Higgs boson pair production in the \( b\overline{b}{\tau}^{+}{\tau}^{-} \) decay channel using 13 TeV pp collision data from the ATLAS detector
A search for Higgs boson pair production in events with two b-jets and two τ-leptons is presented, using a proton–proton collision dataset with an integrated luminosity of 139 fb−1 collected at
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Article
Open AccessSearch for new phenomena in final states with photons, jets and missing transverse momentum in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for new phenomena has been performed in final states with at least one isolated high-momentum photon, jets and missing transverse momentum in proton–proton collisions at a centre-of-mass energy of ...
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Article
Open AccessExclusive dielectron production in ultraperipheral Pb+Pb collisions at \( \sqrt{s_{\textrm{NN}}} \) = 5.02 TeV with ATLAS
Exclusive production of dielectron pairs, γγ → e+e−, is studied using L int ...
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Article
Open AccessSearch for flavour-changing neutral current interactions of the top quark and the Higgs boson in events with a pair of τ-leptons in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
A search for flavour-changing neutral current (FCNC) tqH interactions involving a top quark, another up-type quark (q = u, c), and a Standard Model (SM) Higgs boson decaying into a τ-lepton pair (H → τ+τ−) is pre...
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Open AccessSearch for Higgs boson pair production in association with a vector boson in pp collisions at \(\sqrt{s}=13\,\text {TeV}\) with the ATLAS detector
This paper reports a search for Higgs boson pair (hh) production in association with a vector boson ( \(W\; {\text {o}r}\; Z\)
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Open AccessMeasurement of electroweak \( Z\left(\nu \overline{\nu}\right)\gamma jj \) production and limits on anomalous quartic gauge couplings in pp collisions at \( \sqrt{s} \) = 13 TeV with the ATLAS detector
The electroweak production of Z ν ...
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Open AccessConstraints on spin-0 dark matter mediators and invisible Higgs decays using ATLAS 13 TeV pp collision data with two top quarks and missing transverse momentum in the final state
This paper presents a statistical combination of searches targeting final states with two top quarks and invisible particles, characterised by the presence of zero, one or two leptons, at least one jet origina...
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Open AccessObservation of four-top-quark production in the multilepton final state with the ATLAS detector
This paper presents the observation of four-top-quark ( \(t\bar{t}t\bar{t}\) t ...
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Open AccessSearch for direct pair production of sleptons and charginos decaying to two leptons and neutralinos with mass splittings near the W-boson mass in \( \sqrt{s} \) = 13 TeV pp collisions with the ATLAS detector
A search for the electroweak production of pairs of charged sleptons or charginos decaying into two-lepton final states with missing transverse momentum is presented. Two simplified models of R-parity-conserving ...
