CERN Accelerating science

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1.
Performance of the upgraded PreProcessor of the ATLAS Level-1 Calorimeter Trigger / ATLAS Collaboration
The PreProcessor of the ATLAS Level-1 Calorimeter Trigger prepares the analogue trigger signals sent from the ATLAS calorimeters by digitising, synchronising and calibrating them to reconstruct transverse energy deposits, which are then used in further processing to identify event features. During the first long shutdown of the LHC from 2013 to 2014, the central components of the PreProcessor, the Multichip Modules, were replaced by upgraded versions that feature modern ADC and FPGA technology in order to ensure optimal performance in the high pile-up environment of LHC Run 2. [...]
arXiv:2005.04179; CERN-EP-2020-042.- Geneva : CERN, 2020-11-10 - 48 p. - Published in : JINST Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
2.
Combination of the W boson polarization measurements in top quark decays using ATLAS and CMS data at $\sqrt{s} = $ 8 TeV / CMS Collaboration
The combination of measurements of the W boson polarization in top quark decays performed by the ATLAS and CMS Collaborations is presented. The measurements are based on proton-proton collision data produced at the LHC at a centre-of-mass energy of 8 TeV, and corresponding to an integrated luminosity of about 20 fb$^{-1}$ for each experiment. [...]
arXiv:2005.03799; CMS-TOP-19-004; ATLAS-TOPQ-2018-02; CERN-EP-2020-012; CMS-TOP-19-004-003.- Geneva : CERN, 2020-08-12 - 63 p. - Published in : JHEP 2008 (2020) 051 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF; External links: Additional information for the analysis; CMS AuthorList
3.
Search for direct production of electroweakinos in final states with missing transverse momentum and a Higgs boson decaying into photons in $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for a chargino$-$neutralino pair decaying via the 125 GeV Higgs boson into photons is presented. The study is based on the data collected between 2015 and 2018 with the ATLAS detector at the LHC, corresponding to an integrated luminosity of 139 fb$^{-1}$ of $pp$ collisions at a centre-of-mass energy of 13 TeV. [...]
arXiv:2004.10894; CERN-EP-2019-204.- Geneva : CERN, 2020-10-01 - 46 p. - Published in : JHEP 2010 (2020) 005 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
4.
Measurement of the Lund jet plane using charged particles in 13 TeV proton$-$proton collisions with the ATLAS detector / ATLAS Collaboration
The prevalence of hadronic jets at the LHC requires that a deep understanding of jet formation and structure is achieved in order to reach the highest levels of experimental and theoretical precision. There have been many measurements of jet substructure at the LHC and previous colliders, but the targeted observables mix physical effects from various origins. [...]
arXiv:2004.03540; CERN-EP-2020-030.- Geneva : CERN, 2020-06-05 - 21 p. - Published in : Phys. Rev. Lett. Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; External link: Previous draft version
5.
Search for long-lived, massive particles in events with a displaced vertex and a muon with large impact parameter in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
A search for long-lived particles decaying into hadrons and at least one muon is presented. The analysis selects events that pass a muon or missing-transverse-momentum trigger and contain a displaced muon track and a displaced vertex. [...]
arXiv:2003.11956; CERN-EP-2019-219.- Geneva : CERN, 2020-08-14 - 30 p. - Published in : Phys. Rev. D 102 (2020) 032006 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from Publisher: PDF; Fulltext from publisher: PDF; External link: Previous draft version
6.
Measurement of azimuthal anisotropy of muons from charm and bottom hadrons in Pb+Pb collisions at $\sqrt{s_{NN}} =$ 5.02 TeV with the ATLAS detector / ATLAS Collaboration
Azimuthal anisotropies of muons from charm and bottom hadron decays are measured in Pb+Pb collisions at $\sqrt{s_{NN}}=$ 5.02 TeV. The data were collected with the ATLAS detector at the Large Hadron Collider in 2015 and 2018 with integrated luminosities of 0.5 ${nb}^{-1}$ and 1.4 ${nb^{-1}}$, respectively. [...]
arXiv:2003.03565; CERN-EP-2019-274.- Geneva : CERN, 2020-06-29 - 36 p. - Published in : Phys. Lett. B 807 (2020) 135595 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
7.
Search for dijet resonances in events with an isolated charged lepton using $\sqrt{s} = 13$ TeV proton$-$proton collision data collected by the ATLAS detector / ATLAS Collaboration
A search for dijet resonances in events with at least one isolated charged lepton is performed using $139~{\text{fb}}^{-1}$ of $\sqrt{s}=13$ TeV proton$-$proton collision data recorded by the ATLAS detector at the LHC. The dijet invariant-mass ($m_{jj}$) distribution constructed from events with at least one isolated electron or muon is searched in the region $0.22 < m_{jj} < 6.3$ TeV for excesses above a smoothly falling background from Standard Model processes. [...]
arXiv:2002.11325; CERN-EP-2019-276.- Geneva : CERN, 2020-06-25 - 41 p. - Published in : JHEP 2006 (2020) 151 Article from SCOAP3: PDF; Fulltext: PDF; Fulltext from publisher: PDF; External link: Previous draft version
8.
Observation of the associated production of a top quark and a $Z$ boson in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector / ATLAS Collaboration
Single top-quark production in association with a $Z$ boson is measured in the trilepton channel. The proton-proton collision data collected by the ATLAS experiment from 2015 to 2018 at a centre-of-mass energy of 13 TeV are used, corresponding to an integrated luminosity of 139 $\text{fb}^{-1}$. [...]
arXiv:2002.07546; CERN-EP-2019-273.- Geneva : CERN, 2020-07-20 - 46 p. Article from SCOAP3: PDF; Fulltext: PDF; External link: ATLAS News article
9.
Test of CP invariance in vector-boson fusion production of the Higgs boson in the $H\rightarrow\tau\tau$ channel in proton-proton collisions at $\sqrt{s} =$ 13 TeV with the ATLAS detector / ATLAS Collaboration
A test of CP invariance in Higgs boson production via vector-boson fusion is performed in the $H\rightarrow\tau\tau$ decay channel. This test uses the Optimal Observable method and is carried out using 36.1 $\mathrm{fb}^{-1}$ of $\sqrt{s} =$ 13 TeV proton-proton collision data collected by the ATLAS experiment at the LHC. [...]
arXiv:2002.05315; CERN-EP-2020-009.- Geneva : CERN, 2020-06-10 - 44 p. - Published in : Phys. Lett. B 805 (2020) 135426 Article from SCOAP3: PDF; Fulltext: PDF; External link: Previous draft version
10.
Measurement of the $CP$-violating phase $\phi_s$ in $B^0_s \to J/\psi\phi$ decays in ATLAS at 13 TeV / ATLAS Collaboration
A measurement of the $B^0_s \to J/\psi\phi$ decay parameters using 80.5 $\mathrm{fb}^{-1}$ of integrated luminosity collected with the ATLAS detector from 13 TeV proton-proton collisions at the LHC is presented. The measured parameters include the $CP$-violating phase $\phi_s$, the width difference $\Delta\Gamma_{s}$ between the $B^0_s$ meson mass eigenstates and the average decay width $\Gamma_{s}$. [...]
arXiv:2001.07115; CERN-EP-2019-218.- Geneva : CERN, 2021-04-21 - 36 p. - Published in : Eur. Phys. J. C 81 (2021) 342 Article from SCOAP3: scoap3-fulltext - PDF; scoap - PDF; Fulltext: PDF; External link: Previous draft version

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