# ATLAS Conference Contributions

2021-07-29
19:06
 ATLAS LAr Calorimeter commissioning for LHC Run-3 / Selem, Luka (Centre National de la Recherche Scientifique (FR)) The ATLAS experiment at the Large Hadron Collider (LHC) measures proton--proton collisions at high energies. [...] ATL-LARG-PROC-2021-003. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-29
18:10
 Development of the ATLAS Liquid Argon Calorimeter Readout Electronics for the HL-LHC / Kolb, Mathis (Université Paris-Saclay (FR)) The full ATLAS Liquid Argon Calorimeter electronic readout chain will be upgraded for the high-luminosity LHC. [...] ATL-LARG-PROC-2021-002. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-29
16:13
 Measurements of jet substructure and jet fragmentation using the ATLAS detector / Llorente Merino, Javier (Simon Fraser University (CA)) Measurements of the internal properties of jets at the LHC interaction scale allow QCD to be studied in a new energy regime. [...] ATL-PHYS-PROC-2021-047. - 2021. Original Communication (restricted to ATLAS) - Full text

2021-07-29
10:49
 ATLAS results on charmonium production / Kartvelishvili, Vato (Lancaster University (GB)) An overview is given of the results on charmonium production obtained by the ATLAS collaboration at the LHC. [...] ATL-PHYS-PROC-2021-046. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-27
06:09
 Measurements of $t\overline{t}$ production cross sections with the ATLAS experiment at the LHC / Spalla, Margherita (Max-Planck-Institut fur Physik (DE)) Comprehensive measurements of differential cross-sections of top-quark-antiquark pair-production are presented. [...] ATL-PHYS-PROC-2021-045. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-26
12:23
 Recent Highlights on Higgs Physics from the LHC / Schopf, Elisabeth (University of Oxford (GB)) Many of the Higgs boson production and decay channels, predicted by the Standard Model, have been observed since its 2012 discovery. [...] ATL-PHYS-PROC-2021-044. - 2021. - 12 p. Original Communication (restricted to ATLAS) - Full text

2021-07-25
20:18
 Physics motivation and detector upgrades for the new era of the ATLAS experiment / Nielsen, Jason (University of California,Santa Cruz (US)) The ATLAS experiment at CERN's Large Hadron Collider will be upgraded in two stages to prepare first for the Run~3 data-taking campaign, during which the integrated luminosity will roughly double, and then for the High-Luminosity LHC program with an ultimate integrated luminosity of up to 4 ab$^{-1}$. [...] ATL-PHYS-PROC-2021-043. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-23
03:43
 Measurement of the $t\bar{t}t\bar{t}$ production at 13 TeV with the ATLAS detector at the LHC / Oncel, Omer Ogul (University of Bonn (DE)) Two measurements and their combination for the $t\bar{t}t\bar{t}$ production cross-section analysis using 139 fb$^{-1}$ of proton$-$proton collision data at a centre-of-mass energy of 13 TeV collected by the ATLAS detector at the LHC are presented. [...] ATL-PHYS-PROC-2021-042. - 2021. - 5 p. Original Communication (restricted to ATLAS) - Full text

2021-07-16
16:59
 ATLAS Results with Beauty Mesons / Perrevoort, Ann-Kathrin (Nikhef National institute for subatomic physics (NL)) A broad range of measurements involving $B$ mesons are performed with the ATLAS experiment at the Large Hadron Collider, of which a selection is discussed in this note. [...] ATL-PHYS-PROC-2021-041. - 2021. - 6 p. Original Communication (restricted to ATLAS) - Full text

2021-07-13
14:47
 Prospects for Higgs and di-Higgs measurements at the ATLAS experiment / Betti, Alessandra (Southern Methodist University (US)) The large dataset of about 3000 $\rm{fb}^{-1}$ that will be collected at the High Luminosity LHC (HL-LHC) will be used to measure Higgs boson processes in detail. [...] ATL-PHYS-PROC-2021-040. - 2021. - 7 p. Original Communication (restricted to ATLAS) - Full text