School of Physics and Astronomy: Recent submissions
Now showing items 141-160 of 2790
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Measuring the numerical viscosity in simulations of protoplanetary disks in Cartesian grids
(EDP Sciences, 2023-10)Context. Hydrodynamical simulations solve the governing equations on a discrete grid of space and time. This discretization causes numerical diffusion similar to a physical viscous diffusion, whose magnitude is often ... -
Observation of an Excess of Dicharmonium Events in the Four-Muon Final State with the ATLAS Detector.
(2023-10-13)A search is made for potential ccc[over ¯]c[over ¯] tetraquarks decaying into a pair of charmonium states in the four muon final state using proton-proton collision data at sqrt[s]=13 TeV, corresponding to an integrated ... -
Search for periodic signals in the dielectron and diphoton invariant mass spectra using 139 fb<sup>−1</sup> of pp collisions at √s = 13 TeV with the ATLAS detector
(2023-10-01)A search for physics beyond the Standard Model inducing periodic signals in the dielectron and diphoton invariant mass spectra is presented using 139 fb−1 of s = 13 TeV pp collision data collected by the ATLAS experiment ... -
Measurement of the Sensitivity of Two-Particle Correlations in pp Collisions to the Presence of Hard Scatterings.
(2023-10-20)A key open question in the study of multiparticle production in high-energy pp collisions is the relationship between the "ridge"-i.e., the observed azimuthal correlations between particles in the underlying event that ... -
Measurement of Suppression of Large-Radius Jets and Its Dependence on Substructure in Pb+Pb Collisions at sqrt[s_{NN}]=5.02 TeV with the ATLAS Detector.
(2023-10-27)This letter presents a measurement of the nuclear modification factor of large-radius jets in sqrt[s_{NN}]=5.02 TeV Pb+Pb collisions by the ATLAS experiment. The measurement is performed using 1.72 nb^{-1} and 257 pb^{-1} ... -
Search for lepton-flavour violation in high-mass dilepton final states using 139 fb<sup> −1</sup> of pp collisions at √s = 13 TeV with the ATLAS detector
(2023-10-01)A search is performed for a heavy particle decaying into different-flavour, dilepton final states, using 139 fb−1 of proton-proton collision data at s = 13 TeV collected in 2015–2018 by the ATLAS detector at the Large ... -
Fast b-tagging at the high-level trigger of the ATLAS experiment in LHC Run 3
(IOP Publishing, 2023-11-01) -
Observation of Single-Top-Quark Production in Association with a Photon Using the ATLAS Detector.
(2023-11-03)This Letter reports the observation of single top quarks produced together with a photon, which directly probes the electroweak coupling of the top quark. The analysis uses 139 fb^{-1} of 13 TeV proton-proton collision ... -
Non-Perturbative Explorations of Chiral Rings in 4d N=2 SCFTs
(American Physical Society, 2023)We study the conditions under which 4d N = 2 superconformal field theories (SCFTs) have multiplets housing operators that are chiral with respect to an N = 1 subalgebra. Our main focus is on the set of often-ignored and ... -
Search for a new heavy scalar particle decaying into a Higgs boson and a new scalar singlet in final states with one or two light leptons and a pair of τ-leptons with the ATLAS detector
(Springer Nature, 2023)A search for a new heavy scalar particle X decaying into a Standard Model (SM) Higgs boson and a new singlet scalar particle S is presented. The search uses a proton-proton (pp) collision data sample with an integrated ... -
Evidence of off-shell Higgs boson production from ZZ leptonic decay channels and constraints on its total width with the ATLAS detector
(Elsevier, 2023-10)This Letter reports on a search for off-shell production of the Higgs boson using 139 of pp collision data at 13 TeV collected by the ATLAS detector at the Large Hadron Collider. The signature is a pair of Z bosons, ... -
Measurement of the cross-sections of the electroweak and total production of a Zγ pair in association with two jets in pp collisions at s = 13 TeV with the ATLAS detector
(Elsevier, 2023-10)This Letter presents the measurement of the fiducial and differential cross-sections of the electroweak production of a Zγ pair in association with two jets. The analysis uses 140 fb−1 of LHC proton–proton collision data ... -
Search for leptoquarks decaying into the bτ final state in pp collisions at s = 13 TeV with the ATLAS detector
(Springer Nature, 2023)A search for leptoquarks decaying into the bτ final state is performed using Run 2 proton-proton collision data from the Large Hadron Collider, corresponding to an integrated luminosity of 139 fb−1 at = 13 TeV recorded ...