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ATLAS Preprints

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2019-09-19
07:44
Search for squarks and gluinos in final states with same-sign leptons and jets using 139 fb$^{-1}$ of data collected with the ATLAS detector / ATLAS Collaboration
A search for supersymmetric partners of gluons and quarks is presented, involving signatures with jets and either two isolated leptons (electrons or muons) with the same electric charge, or at least three isolated leptons. [...]
arXiv:1909.08457 ; CERN-EP-2019-161. - 2019. - 42 p, 42 p.
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2019-09-06
16:03
Combined measurements of Higgs boson production and decay using up to $80$ fb$^{-1}$ of proton-proton collision data at $\sqrt{s}=$ 13 TeV collected with the ATLAS experiment / ATLAS Collaboration
Combined measurements of Higgs boson production cross sections and branching fractions are presented. [...]
arXiv:1909.02845 ; CERN-EP-2019-097. - 2019. - 80 p.
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2019-09-04
14:59
Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
The elliptic flow of muons from the decay of charm and bottom hadrons is measured in $pp$ collisions at $\sqrt{s}=13$ TeV using a data sample with an integrated luminosity of 150 pb$^{-1}$ recorded by the ATLAS detector at the LHC. [...]
arXiv:1909.01650 ; CERN-EP-2019-166. - 2019. - 27 p.
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2019-09-04
14:03
Rare top quark production at the LHC:\\ t$\bar{\text{t}}$Z, t$\bar{\text{t}}$W, t$\bar{\text{t}}\gamma$, tZq, t$\gamma$q, and t$\bar{\text{t}}$t$\bar{\text{t}}$ / Knolle, Joscha (DESY) /ATLAS and CMS Collaborations
A comprehensive set of measurements of top quark pair and single top quark production in association with electroweak bosons (W, Z, or $\gamma$) is presented. The results are compared to standard model (SM) predictions and used to set limits on new physics effects that would induce deviations from the SM. [...]
CMS-CR-2019-078.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF;
In : The XXVII International Workshop on Deep Inelastic Scattering and Related Subjects, Turin, Italy, 8 - 12 Apr 2019

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2019-09-04
13:59
Electroweak measurements at the High-Luminosity LHC / Savin, Alexander (Wisconsin U., Madison) /ATLAS and CMS Collaborations
A set of selected standard model measurements proposed for the ATLAS and CMS experiments after the high-luminosity upgrade of the LHC is discussed. The measurements are separated into two categories: precise measurements that benefit from both improved systematic uncertainties and increased luminosity, like W or top mass, or weak mixing angle measurements; measurements of low cross section production that benefit mainly from luminosity increase and detector improvements, like VV VBS polarized cross section measurements or study of VVV production..
CMS-CR-2019-120.- Geneva : CERN, 2019 - 7 p. Fulltext: PDF;
In : 7th Edition of the Large Hadron Collider Physics Conference, Puebla, Mexico, 20 May 2019

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2019-09-04
13:59
Differential measurements of Higgs production at ATLAS and CMS / Sculac, Toni (Split Tech. U.) /ATLAS and CMS Collaborations
Differential Higgs boson production cross sections are sensitive probes for physics beyond the Standard Model. New physics may contribute in the gluon-gluon fusion loop, the dominant Higgs boson production mechanism at the LHC, and manifest itself through deviations from the distributions predicted by the standard model. [...]
CMS-CR-2019-113.- Geneva : CERN, 2019 - 8 p. Fulltext: PDF;
In : 7th Edition of the Large Hadron Collider Physics Conference, Puebla, Mexico, 20 May 2019

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2019-09-03
21:58
Search for light long-lived neutral particles produced in $pp$ collisions at $\sqrt{s} =$ 13 TeV and decaying into collimated leptons or light hadrons with the ATLAS detector / ATLAS Collaboration
Several models of physics beyond the Standard Model predict the existence of dark photons, light neutral particles decaying into collimated leptons or light hadrons. [...]
arXiv:1909.01246 ; CERN-EP-2019-140. - 2019. - 42 p.
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2019-09-02
17:41
Performance of electron and photon triggers in ATLAS during LHC Run 2 / ATLAS Collaboration
Electron and photon triggers covering transverse energies from 5 GeV to several TeV are essential for the ATLAS experiment to record signals for a wide variety of physics: from Standard Model processes to searches for new phenomena in both proton-proton and heavy-ion collisions. [...]
arXiv:1909.00761 ; CERN-EP-2019-169. - 2019. - 55 p.
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2019-08-22
22:53
Search for flavour-changing neutral currents in processes with one top quark and a photon using 81 fb$^{-1}$ of $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS experiment / ATLAS Collaboration
A search for flavour-changing neutral current (FCNC) events via the coupling of a top quark, a photon, and an up or charm quark is presented using 81 fb$^{-1}$ of proton-proton collision data taken at a centre-of-mass energy of 13 TeV with the ATLAS detector at the LHC. [...]
arXiv:1908.08461 ; CERN-EP-2019-155. - 2019. - 34 p.
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2019-08-22
17:32
Search for electroweak production of charginos and sleptons decaying into final states with two leptons and missing transverse momentum in $\sqrt{s}=13$ TeV $pp$ collisions using the ATLAS detector / ATLAS Collaboration
A search for the electroweak production of charginos and sleptons decaying into final states with two electrons or muons is presented. [...]
arXiv:1908.08215 ; CERN-EP-2019-106. - 2019. - 47 p.
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