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ATLAS Notes

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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

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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

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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

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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

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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

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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

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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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2019-06-12
14:41
Primary Vertex Selection in VBF Higgs to Invisibles at the HL-LHC with the ATLAS Experiment / Safdari, Murtaza (SLAC National Accelerator Laboratory) ; Schwartzman, Ariel (SLAC National Accelerator Laboratory) ; Cairo, Valentina Maria (SLAC National Accelerator Laboratory) ; Lee, Graham Richard (University of Bergen)
ATLAS has developed a new approach for vertex selection in VBF invisible events at HL-LHC conditions, exploiting its new forward tracking capabilities, integrating calorimeter and tracking information to mitigate the impact of pileup vertex merging, and introducing a new way to apply pile-up jet suppression methods for the selection of VBF jets. [...]
ATL-PHYS-PROC-2019-044. - 2019. - 5 p.
Original Communication (restricted to ATLAS) - Full text

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2019-06-12
14:41
Searching for leptoquarks with the ATLAS detector / Pleskot, Vojtech (Charles University, Faculty of Mathematics and Physics, Prague)
Scalar leptoquarks (LQs) were sought using 36.1 fb−1 of pp-collision data at 13 TeV center-of-mass energy. [...]
ATL-PHYS-PROC-2019-043. - 2019. - 5 p.
Original Communication (restricted to ATLAS) - Full text

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2019-06-11
19:00
ATLAS Measurements of CP Violation and Rare Decays in Beauty Mesons / Walkowiak, Wolfgang (Department Physik, Universitaet Siegen)
The ATLAS experiment at the Large Hadron Collider (LHC) has performed accurate measurements of mixing and CP violation in the neutral B mesons, and also of rare processes happening in electroweak FCNC-suppressed neutral B-mesons decays. [...]
arXiv:1906.05056 ; ATL-PHYS-PROC-2019-042. - 2019. - 6 p.
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