# ATLAS Preprints

2020-07-30
01:29
 Evidence for $t\bar{t} t \bar{t}$ production in the multilepton final state in proton-proton collisions at $\sqrt{s}$ = 13 TeV with the ATLAS detector / ATLAS Collaboration A search is presented for four-top-quark production using an integrated luminosity of 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. [...] arXiv:2007.14858 ; CERN-EP-2020-111. - 2020. - 44 p. Fulltext - Previous draft version - Fulltext

2020-07-30
00:16
 Reconstruction and identification of boosted di-$\tau$ systems in a search for Higgs boson pairs using 13 TeV proton-proton collision data in ATLAS In this paper, a novel technique, referred to as the di-$\tau$ tagger, is designed to reconstruct and identify hadronically decaying $\tau^+\tau^-$ pairs with a large Lorentz boost in the ATLAS experiment at the Large Hadron Collider. [...] CERN-EP-2020-118. - 2020. Fulltext - Previous draft version

2020-07-29
01:27
 Test of the universality of $\tau$ and $\mu$ lepton couplings in $W$-boson decays from $t\bar{t}$ events with the ATLAS detector / ATLAS Collaboration The Standard Model of particle physics encapsulates our current best understanding of physics at the smallest scales. [...] arXiv:2007.14040 ; CERN-EP-2020-139. - 2020. - 33 p. CERN News article - Fulltext - Fulltext

2020-07-28
23:43
 Cross-section measurements of top-quark pair production in association with a hard photon at 13 TeV with the ATLAS detector / Zoch, Knut 25 years after the top quark's discovery, the Large Hadron Collider at CERN produces proton-proton collision data on unprecedented scales at unprecedented energies – and has heralded an era of top-quark precision measurements [...] arXiv:2007.14701 ; CERN-THESIS-2020-081 ; II.Physik-UniG\"o-Diss-2020/01 II.Physik-UniGö-Diss-2020/01. - 171 p.

Full text - Fulltext
2020-07-27
17:18
 Measurement of hadronic event shapes in multijet final states at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration A measurement of event-shape variables in proton$-$proton collisions at large momentum transfer is presented using data collected at $\sqrt{s} = 13$ TeV with the ATLAS detector at the Large Hadron Collider. [...] arXiv:2007.12600 ; CERN-EP-2020-077. - 2020. - 28 p. Fulltext - Previous draft version - Fulltext

2020-07-27
16:25
 Operation of the ATLAS trigger system in Run 2 / ATLAS Collaboration The ATLAS experiment at the Large Hadron Collider employs a two-level trigger system to record data at an average rate of 1 kHz from physics collisions, starting from an initial bunch crossing rate of 40 MHz. [...] arXiv:2007.12539 ; CERN-EP-2020-109. - 2020. - 60 p. Fulltext - Previous draft version - Fulltext

2020-07-16
14:12
 Alignment of the ATLAS Inner Detector in Run-2 / ATLAS Collaboration The performance of the ATLAS Inner Detector alignment has been studied using $pp$ collision data at $\sqrt{s} = 13$ TeV collected by the ATLAS experiment during Run 2 (2015 to 2018) of the Large Hadron Collider (LHC). [...] arXiv:2007.07624 ; CERN-EP-2020-108. - 2020. - 61 p. Fulltext - Previous draft version - Fulltext

2020-07-16
14:03
 A search for the dimuon decay of the Standard Model Higgs boson with the ATLAS detector A search for the dimuon decay of the Standard Model (SM) Higgs boson is performed using data corresponding to an integrated luminosity of 139 fb$^{-1}$ collected with the ATLAS detector in Run2 $pp$ collisions at $\sqrt{s}=13$ TeV at the Large Hadron Collider. [...] CERN-EP-2020-117. - 2020. Fulltext - Previous draft version

2020-07-15
11:16
 Measurements of inclusive and differential cross-sections of combined $t\bar{t}\gamma$ and $tW\gamma$ production in the $e\mkern-2mu\mu$ channel at 13 TeV with the ATLAS detector / ATLAS Collaboration Inclusive and differential cross-sections for the production of top quarks in association with a photon are measured with proton-proton collision data corresponding to an integrated luminosity of 139 fb$^{-1}$. [...] arXiv:2007.06946 ; CERN-EP-2020-100. - 2020. - 45 p. Fulltext - Previous draft version - Fulltext

2020-07-13
17:11
 Search for resonances decaying into a weak vector boson and a Higgs boson in the fully hadronic final state produced in proton$-$proton collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration A search for heavy resonances decaying into a $W$ or $Z$ boson and a Higgs boson produced in proton-proton collisions at the Large Hadron Collider at $\sqrt{s} = 13$ TeV is presented. [...] arXiv:2007.05293 ; CERN-EP-2020-073. - 2020. - 38 p. Fulltext - Previous draft version - Fulltext