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543 Result(s)
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Article
Open AccessMeasurement of the differential \(\hbox {t}\overline{\hbox {t}}\) production cross section as a function of the jet mass and extraction of the top quark mass in hadronic decays of boosted top quarks
A measurement of the jet mass distribution in hadronic decays of Lorentz-boosted top quarks is presented. The measurement is performed in the lepton + jets channel of top quark pair production (
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Open AccessA study of \(C\!P\) violation in the decays \({{B} ^\pm } \rightarrow [{{K} ^+} {{K} ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }\) ( \(h = K, \pi \) ) and \({{B} ^\pm } \rightarrow [{{\uppi } ^+} {{\uppi } ^-} {{\uppi } ^+} {{\uppi } ^-} ]_{D} h^{\pm }\)
The first study of \(C\!P\) C P ...
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Open AccessMeasurement of \(Z\gamma \gamma \) production in pp collisions at \(\sqrt{s}= 13\) TeV with the ATLAS detector
Cross-sections for the production of a Z boson in association with two photons are measured in proton–proton collisions at a centre-of-mass energy of 13 TeV. The data used correspond to an integrated luminosity o...
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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 AccessMeasurements of observables sensitive to colour reconnection in \(t{\bar{t}}\) events with the ATLAS detector at \(\sqrt{s} =\) 13 TeV
A measurement of observables sensitive to effects of colour reconnection in top-quark pair-production events is presented using 139 $$\hbox {f...
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Article
Open AccessSearches for new phenomena in events with two leptons, jets, and missing transverse momentum in 139 fb \(^{-1}\) of \(\varvec{\sqrt{s}}=13\) TeV \(\varvec{pp}\) collisions with the ATLAS detector
Searches for new phenomena inspired by supersymmetry in final states containing an \(e^+e^-\) ...
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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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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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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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Open AccessMeasurement of the nuclear modification factor of b-jets in 5.02 TeV Pb+Pb collisions with the ATLAS detector
This paper presents a measurement of b-jet production in Pb+Pb and pp collisions at \(\sqrt{s_{_\text {NN}}}=5.02\) ...
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Article
Open AccessAnalysis of localized CP asymmetry in \({\bar{B}}_{s}^{0} \rightarrow \pi ^+\pi ^-\pi ^{0}(K^{0})\)
An investigation about localized CP asymmetries for the processes of \({\bar{B}}_{s}^{0} \rightarrow \pi ^{+}\pi ^{-}\pi ^{0} (K^{0})\) ...
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Open AccessAnalysis of localized CP asymmetry in \({\bar{B}}_{s}^{0} \rightarrow \pi ^+\pi ^-\pi ^{0}(K^{0})\)
An investigation about localized CP asymmetries for the processes of \({\bar{B}}_{s}^{0} \rightarrow \pi ^{+}\pi ^{-}\pi ^{0} (K^{0})\) ...
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Open AccessErratum: Measurement of prompt and nonprompt charmonium suppression in PbPb collisions at 5.02 TeV
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Open AccessMass testing and characterization of 20-inch PMTs for JUNO
Main goal of the JUNO experiment is to determine the neutrino mass ordering using a 20 kt liquid-scintillator detector. Its key feature is an excellent energy resolution of at least 3% at 1 MeV, for which its ...
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Article
Open AccessEvidence of Mass Ordering of Charm and Bottom Quark Energy Loss in Au+Au Collisions at RHIC
Partons traversing the strongly interacting medium produced in heavy-ion collisions are expected to lose energy depending on their color charge and mass. We measure the nuclear modification factors for charm- ...
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Open AccessMeasurements of the associated production of a W boson and a charm quark in proton–proton collisions at \(\sqrt{s}=8\,\text {TeV} \)
Measurements of the associated production of a W boson and a charm ( \({\text {c}}\) c ...
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Article
Open AccessImproved measurement of the strong-phase difference \(\delta _D^{K\pi }\) in quantum-correlated \(D{\bar{D}}\) decays
The decay \(D \rightarrow K^-\pi ^+\) D → ...
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Article
Open AccessSearch for type-III seesaw heavy leptons in leptonic 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 AccessOn the late-time tails of massive perturbations in spherically symmetric black holes
It was first pointed out by Koyama and Tomimatsu that, under reasonable assumptions, the asymptotic late-time tails of massive scalar perturbations in the far zone of spherically symmetric black hole spacetime...
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Open AccessSeparation of track- and shower-like energy deposits in ProtoDUNE-SP using a convolutional neural network
Liquid argon time projection chamber detector technology provides high spatial and calorimetric resolutions on the charged particles traversing liquid argon. As a result, the technology has been used in a numb...