23 Result(s)
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Article
Open AccessMeasurement of the production cross-section of \(J/\psi \) and \(\psi (2{\textrm{S}})\) mesons in pp collisions at \(\sqrt{s} = 13\) TeV with the ATLAS detector
Measurements of the differential production cross-sections of prompt and non-prompt \(J/\psi \) ...
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Open AccessMeasurement of the \(H \rightarrow \gamma \gamma \) and \(H \rightarrow ZZ^* \rightarrow 4 \ell \) cross-sections in pp collisions at \(\sqrt{s}=13.6\) TeV with the ATLAS detector
The inclusive Higgs boson production cross-section is measured in the di-photon and the \(ZZ^* \rightarrow 4 \ell \) ...
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Article
Waveguide distribution system of the HEPS linac
The High-Energy Photon Source (HEPS) is a 6 GeV storage ring-based light source under construction in Bei**g, China. Its accelerator consists of a 6 GeV storage ring, a full-energy booster, an S-band normal-c...
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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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Article
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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Article
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 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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Article
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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Article
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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Article
Open AccessMeasurement of the total cross section and \(\rho \) -parameter from elastic scattering in pp collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
In a special run of the LHC with \(\beta ^{\star } = 2.5\) β ...
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Article
Open AccessSearch for flavour-changing neutral-current interactions of a top quark and a gluon in pp collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
A search is presented for the production of a single top quark via left-handed flavour-changing neutral-current (FCNC) interactions of a top quark, a gluon and an up or charm quark. Two production processes ar...
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Article
Open AccessSearch for dark matter produced in association with a single top quark in \(\sqrt{s}=13\) TeV \(pp\) collisions with the ATLAS detector
This paper presents a search for dark matter in the context of a two-Higgs-doublet model together with an additional pseudoscalar mediator, a, which decays into the dark-matter particles. Processes where the pseu...
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Article
Open AccessSearch for a heavy Higgs boson decaying into a Z boson and another heavy Higgs boson in the \(\ell \ell bb\) and \(\ell \ell WW\) final states in pp collisions at \(\sqrt{s}=13\) \(\text {TeV}\) with the ATLAS detector
A search for a heavy neutral Higgs boson, A, decaying into a Z boson and another heavy Higgs boson, H, is performed using a data sample corresponding to an integrated luminosity of 139 fb
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Article
Open AccessSearch for heavy resonances decaying into a pair of Z bosons in the \(\ell ^+\ell ^-\ell '^+\ell '^-\) and \(\ell ^+\ell ^-\nu {{\bar{\nu }}}\) final states using 139 \(\mathrm {fb}^{-1}\) of proton–proton collisions at \(\sqrt{s} = 13\,\) TeV with the ATLAS detector
A search for heavy resonances decaying into a pair of Z bosons leading to \(\ell ^+\ell ^-\ell '^+\ell '^-\) ...
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Article
Open AccessSearch for type-III seesaw heavy leptons in dilepton final states in pp collisions at \( \sqrt{s} = 13\,{\text {TeV}} \) with the ATLAS detector
A search for the pair production of heavy leptons as predicted by the type-III seesaw mechanism is presented. The search uses proton–proton collision data at a centre-of-mass energy of 13 TeV, corresponding to ...
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Article
Open AccessSearch for phenomena beyond the Standard Model in events with large b-jet multiplicity using the ATLAS detector at the LHC
A search is presented for new phenomena in events characterised by high jet multiplicity, no leptons (electrons or muons), and four or more jets originating from the fragmentation of b-quarks (b-jets). The search...
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Article
Open AccessSearch for heavy diboson resonances in semileptonic final states in pp collisions at \(\sqrt{s}=13\) TeV with the ATLAS detector
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 ...
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Article
Open AccessEvidence for \(t\bar{t}t\bar{t}\) production in the multilepton final state in proton–proton collisions at \(\sqrt{s}=13\) \(\text {TeV}\) with the ATLAS detector
A search is presented for four-top-quark production using an integrated luminosity of 139 fb \(^{-1}\) ...
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Article
Open AccessMeasurement of the transverse momentum distribution of Drell–Yan lepton pairs in proton–proton collisions at \(\sqrt{s}=13\,\)TeV with the ATLAS detector
This paper describes precision measurements of the transverse momentum \(p_\mathrm {T}^{\ell \ell }\)pTℓℓ (\(\ell =e,\mu \)ℓ=e,μ) and of the angular variable \(\phi ^{*}_{\eta }\)ϕη∗ distributions of Drell–Yan le...
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Article
Open AccessMeasurement of the \(t\bar{t}\) production cross-section and lepton differential distributions in \(e\mu \) dilepton events from pp collisions at \(\sqrt{s}=13\,\text {TeV}\) with the ATLAS detector
The inclusive top quark pair ( \(t\bar{t}\) t ...
