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ATLAS Preprints

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2020-08-14
03:10
Search for new phenomena in final states with large jet multiplicities and missing transverse momentum using $\sqrt{s} = 13~\mathrm{TeV}$ proton-proton collisions recorded by ATLAS at Run-2 of the LHC
Results of a search for new particles decaying into eight or more jets and moderate missing transverse momentum are presented. [...]
CERN-EP-2020-123. - 2020.
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2020-08-14
02:24
Measurement of light-by-light scattering and search for axion-like particles with 2.2 nb$^{-1}$ of Pb+Pb data with the ATLAS detector / ATLAS Collaboration
This paper describes a measurement of light-by-light scattering based on Pb+Pb collision data recorded by the ATLAS experiment during Run 2 of the LHC. [...]
arXiv:2008.05355 ; CERN-EP-2020-135. - 2020. - 44 p, 44 p.
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2020-08-08
04:34
Measurement of the associated production of a Higgs boson decaying into $b$-quarks with a vector boson at high transverse momentum in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
The associated production of a Higgs boson with a $W$ or $Z$ boson decaying into leptons and where the Higgs boson decays to a $b\bar{b}$ pair is measured in the high vector-boson transverse momentum regime, above 250 GeV, with the ATLAS detector. [...]
arXiv:2008.02508 ; CERN-EP-2020-093. - 2020. - 49 p.
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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.
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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.
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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.
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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-UniGö-Diss-2020/01 - 171 p.

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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. - 45 p.
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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.
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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.
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