# ATLAS Notes

2019-06-25
16:07
 Measurements of photon production at ATLAS / Cueto Gomez, Ana Rosario (LAPP, Univ. Grenoble Alpes, Univ. Savoie Mont Blanc, CNRS/IN2P3, Annecy) Measurements of prompt-isolated photon production at hadron colliders provide a stringent test of perturbative QCD and can be used to constrain the gluon distribution functions inside the proton. [...] ATL-PHYS-PROC-2019-052. - 2019. - 6 p. Original Communication (restricted to ATLAS) - Full text

2019-06-25
15:42
 Recent diboson and multiboson results in ATLAS / Cristinziani, Markus (University of Bonn) Recent measurements of the associated production of two or three massive vector bosons in proton--proton collisions at the Large Hadron Collider, collected by the ATLAS detector at a centre-of-mass energy of $\sqrt{s} = 13$ TeV, are reported. [...] ATL-PHYS-PROC-2019-051. - 2019. - 14 p. Original Communication (restricted to ATLAS) - Full text

2019-06-25
04:21
 Top quark pair properties & top mass measurements at the LHC / Ravina, Baptiste (University of Sheffield) Precise measurements of the properties of the top quark test the Standard Model (SM) and can be used to constrain new physics models. [...] ATL-PHYS-PROC-2019-050. - 2019. - 8 p. Original Communication (restricted to ATLAS) - Full text

2019-06-21
22:20
 Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector The elliptic flow of charm and bottom decay muons is measured in high-multiplicity \pp collisions at $\sqrt{s}=13$ TeV with an integrated luminosity of 150 pb$^{-1}$ using the ATLAS detector at the LHC. [...] ATLAS-CONF-2019-023. - 2019. Original Communication (restricted to ATLAS) - Full text

2019-06-21
21:20
 Two-particle azimuthal correlations in photo-nuclear ultra-peripheral Pb+Pb collisions at 5.02~TeV with ATLAS This note presents a measurement of two-particle long-range azimuthal correlations in photo-nuclear collisions using 1.73~nb$^{-1}$ of 5.02~TeV~Pb+Pb data collected in 2018 by ATLAS with a dedicated photo-nuclear event trigger. [...] ATLAS-CONF-2019-022. - 2019. Original Communication (restricted to ATLAS) - Full text

2019-06-21
16:18
 $t\bar{t}$+X production at ATLAS and CMS / Riu, Imma (Institut de Fisica d'Altes Energies (IFAE), Barcelona Institute of Science and Technology, Barcelona, Spain) Recent measurements of top-quark pair production in association with W-bosons, Z-bosons, photons and b-tagged jets are reported. [...] ATL-PHYS-PROC-2019-049. - 2019. - 4 p. Original Communication (restricted to ATLAS) - Full text

2019-06-21
16:02
 Development of ATLAS Primary Vertex Reconstruction for LHC Run 3 / Sanderswood, Izaac Gregory (Lancaster University, Department of Physics) Increasing luminosity at the Large Hadron Collider (LHC) poses a challenge for primary vertex reconstruction in ATLAS. [...] ATL-PHYS-PROC-2019-048. - 2019. - 6 p. Original Communication (restricted to ATLAS) - Full text

2019-06-17
13:21
 Measurements of dijet azimuthal decorrelations and extraction of alphaS at ATLAS / Hubacek, Zdenek (Czech Technical University in Prague) The production of jets at hadron colliders provides stringent tests of perturbative QCD. [...] ATL-PHYS-PROC-2019-047. - 2019. - 6 p. Original Communication (restricted to ATLAS) - Full text

2019-06-13
20:34
 Search for Dilepton Resonances / White, Aaron (University of Michigan, Department of Physics) A search for resonances in the dielectron and dimuon mass spectra from 250 GeV to 6 TeV is presented. [...] ATL-PHYS-PROC-2019-046. - 2019. - 5 p. Original Communication (restricted to ATLAS) - Full text

2019-06-13
20:27
 Exotic Higgs decays at the LHC / Snyder, Scott (Brookhaven National Laboratory (BNL)) Many interesting extensions to the Standard Model predict nonstandard decays of the 125 GeV Higgs boson. [...] ATL-PHYS-PROC-2019-045. - 2019. - 5 p. Original Communication (restricted to ATLAS) - Full text

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ATLAS PUB Notes (2,790)