Blar i Department of Physics and Technology på emneord "VDP::Kjerne- og elementærpartikkelfysikk: 431"
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Alignment of the ATLAS Inner Detector in Run 2
(Journal article; Peer reviewed, 2020-12-24)The performance of the ATLAS Inner Detector alignment has been studied using pp collision data at s√=13TeV collected by the ATLAS experiment during Run 2 (2015–2018) of the Large Hadron Collider (LHC). The goal of the ... -
Anisotropic flow of identified hadrons in Xe-Xe collisions at √sNN = 5.44 TeV
(Journal article; Peer reviewed, 2021)Measurements of elliptic (v2) and triangular (v3) flow coefficients of π±, K±, p+\( \overline{\mathrm{p}} \), \( {\mathrm{K}}_{\mathrm{S}}^0 \), and Λ+\( \overline{\Lambda} \) obtained with the scalar product method in ... -
(Anti-)deuteron production in pp collisions at √s=13TeV
(Journal article; Peer reviewed, 2020)The study of (anti-)deuteron production in pp collisions has proven to be a powerful tool to investigate the formation mechanism of loosely bound states in high-energy hadronic collisions. In this paper the production of ... -
ATLAS data quality operations and performance for 2015–2018 data-taking
(Journal article; Peer reviewed, 2020-04)The ATLAS detector at the Large Hadron Collider reads out particle collision data from over 100 million electronic channels at a rate of approximately 100 kHz, with a recording rate for physics events of approximately 1 ... -
The ATLAS Fast TracKer system
(Journal article; Peer reviewed, 2021)The ATLAS Fast TracKer (FTK) was designed to provide full tracking for the ATLAS high-level trigger by using pattern recognition based on Associative Memory (AM) chips and fitting in high-speed field programmable gate ... -
AtlFast3: The Next Generation of Fast Simulation in ATLAS
(Journal article; Peer reviewed, 2022)The ATLAS experiment at the Large Hadron Collider has a broad physics programme ranging from precision measurements to direct searches for new particles and new interactions, requiring ever larger and ever more accurate ... -
Azimuthal correlations of prompt D mesons with charged particles in pp and p–Pb collisions at √sNN=5.02TeV
(Journal article; Peer reviewed, 2020-10-22)The measurement of the azimuthal-correlation function of prompt D mesons with charged particles in pp collisions at s√=5.02 TeV and p–Pb collisions at sNN−−−√=5.02 TeV with the ALICE detector at the LHC is reported. The ... -
Centrality and transverse momentum dependence of inclusive J/ψ production at midrapidity in Pb–Pb collisions at √sNN=5.02 TeV
(Journal article; Peer reviewed, 2020-06-10)The inclusive J/ψ meson production in Pb–Pb collisions at a center-of-mass energy per nucleon–nucleon collision of √sNN = 5.02 TeV at midrapidity (|y| < 0.9) is reported by the ALICE Collaboration. The measurements are ... -
Characterizing the initial conditions of heavy-ion collisions at the LHC with mean transverse momentum and anisotropic flow correlations
(Journal article; Peer reviewed, 2022)Correlations between mean transverse momentum [pT] and anisotropic flow coefficients v2 or v3 are measured as a function of centrality in Pb–Pb and Xe–Xe collisions at sNN=5.02 TeV and 5.44 TeV, respectively, with ALICE. ... -
Coherent photoproduction of ρ 0 vector mesons in ultra-peripheral Pb-Pb collisions at √sNN = 5.02 TeV
(Journal article; Peer reviewed, 2020)Cross sections for the coherent photoproduction of ρ0 vector mesons in ultra-peripheral Pb-Pb collisions at √sNN = 5.02 TeV are reported. The measurements, which rely on the π+π− decay channel, are presented in three regions ... -
Combination of searches for Higgs boson pairs in pp collisions at √s=13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-01-10)This letter presents a combination of searches for Higgs boson pair production using up to 36.1 fb−1 of proton–proton collision data at a centre-of-mass energy √s = 13 TeV recorded with the ATLAS detector at the LHC. The ... -
Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at √s = 8 TeV
(Journal article; Peer reviewed, 2020-08)The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at ... -
Combined measurements of Higgs boson production and decay using up to 80 fb−1 of proton-proton collision data at √s=13 TeV collected with the ATLAS experiment
(Journal article; Peer reviewed, 2020-01-03)Combined measurements of Higgs boson production cross sections and branching fractions are presented. The combination is based on the analyses of the Higgs boson decay modes H→γγ, ZZ∗, WW∗, ττ, b¯b, μμ, searches for decays ... -
Configuration and performance of the ATLAS b-jet triggers in Run 2
(Journal article; Peer reviewed, 2021)Several improvements to the ATLAS triggers used to identify jets containing b-hadrons (b-jets) were implemented for data-taking during Run 2 of the Large Hadron Collider from 2016 to 2018. These changes include reconfiguring ... -
Constraining the Chiral Magnetic Effect with charge-dependent azimuthal correlations in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 and 5.02 TeV
(Journal article; Peer reviewed, 2020-09-24)Systematic studies of charge-dependent two- and three-particle correlations in Pb-Pb collisions at \(\sqrt{s_{NN}}\) = 2.76 and 5.02 TeV used to probe the Chiral Magnetic Effect (CME) are presented. These measurements are ... -
CP Properties of Higgs Boson Interactions with Top Quarks in the tt¯ H and tH Processes Using H→γγ with the ATLAS Detector
(Journal article; Peer reviewed, 2020-08-05)A study of the charge conjugation and parity (CP) properties of the interaction between the Higgs boson and top quarks is presented. Higgs bosons are identified via the diphoton decay channel (H→γγ), and their production ... -
Determination of jet calibration and energy resolution in proton–proton collisions at √s=8TeV using the ATLAS detector
(Journal article; Peer reviewed, 2020)The jet energy scale, jet energy resolution, and their systematic uncertainties are measured for jets reconstructed with the ATLAS detector in 2012 using proton–proton data produced at a centre-of-mass energy of 8 TeV with ... -
Dielectron production in proton-proton and proton-lead collisions at √sNN=5.02TeV
(Journal article; Peer reviewed, 2020-11-25)The first measurements of dielectron production at midrapidity (|ηe|<0.8) in proton–proton and proton–lead collisions at √sNN=5.02 TeV at the LHC are presented. The dielectron cross section is measured with the ALICE ... -
Differential cross-section measurements for the electroweak production of dijets in association with a Z boson in proton–proton collisions at ATLAS
(Journal article; Peer reviewed, 2021)Differential cross-section measurements are presented for the electroweak production of two jets in association with a Z boson. These measurements are sensitive to the vector-boson fusion production mechanism and provide ... -
Dijet resonance search with weak supervision using √s = 13 TeV pp collisions in the ATLAS detector
(Journal article; Peer reviewed, 2020-09-21)This Letter describes a search for narrowly resonant new physics using a machine-learning anomaly detection procedure that does not rely on signal simulations for developing the analysis selection. Weakly supervised learning ...