450 research outputs found

    The ATLAS Trigger/DAQ Authorlist, version 1.0

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    This is a reference document giving the ATLAS Trigger/DAQ author list, version 1.0 of 20 Nov 2008

    Evidence of W gamma gamma Production in pp Collisions at root s=8 TeV and Limits on Anomalous Quartic Gauge Couplings with the ATLAS Detector

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    Published by the American Physical Society under the terms of the Creative Commons Attribution 3.0 License. Further distribution of this work must maintain attribution to the author(s) and the published article’s title, journal citation, and DOISCOAP

    Search for dark matter candidates and large extra dimensions in events with a jet and missing transverse momentum with the ATLAS detector

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    Open Access, Copyright CERN, for the benefit of the ATLAS collaboration. This article is distributed under the terms of the Creative Commons Attribution License which permits any use, distribution and reproduction in any medium, provided the original author(s) and source are credited

    Author Correction: A detailed map of Higgs boson interactions by the ATLAS experiment ten years after the discovery

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    Measurement of the production cross-section of psi(2S) -> J/psi(-> mu(+)mu(-))pi(+) pi(-) in pp collisions at root s=7 TeV at ATLAS

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    © 2014, The Author(s). Abstract: The prompt and non-prompt production cross-sections for ψ(2S) mesons are measured using 2.1 fb−1 of pp collision data at a centre-of-mass energy of 7 TeV recorded by the ATLAS experiment at the LHC. The measurement exploits the ψ(2S) → J/ψ(→ μ+μ−)π+π− decay mode, and probes ψ(2S) mesons with transverse momenta in the range 10 ≤ pT< 100 GeV and rapidity |y| < 2.0. The results are compared to other measurements of ψ(2S) production at the LHC and to various theoretical models for prompt and non-prompt quarkonium production.[Figure not available: see fulltext.]

    The Single-Phase ProtoDUNE Technical Design Report

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    ProtoDUNE-SP is the single-phase DUNE Far Detector prototype that is under construction and will be operated at the CERN Neutrino Platform (NP) starting in 2018. ProtoDUNE-SP, a crucial part of the DUNE effort towards the construction of the first DUNE 10-kt fiducial mass far detector module (17 kt total LAr mass), is a significant experiment in its own right. With a total liquid argon (LAr) mass of 0.77 kt, it represents the largest monolithic single-phase LArTPC detector to be built to date. It's technical design is given in this report.Comment: 165 pages, fix references, author list and minor number

    Supernova neutrino burst detection with the deep underground neutrino experiment: DUNE Collaboration

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    The deep underground neutrino experiment (DUNE), a 40-kton underground liquid argon time projection chamber experiment, will be sensitive to the electron-neutrino flavor component of the burst of neutrinos expected from the next Galactic core-collapse supernova. Such an observation will bring unique insight into the astrophysics of core collapse as well as into the properties of neutrinos. The general capabilities of DUNE for neutrino detection in the relevant few- to few-tens-of-MeV neutrino energy range will be described. As an example, DUNE’s ability to constrain the νe spectral parameters of the neutrino burst will be considered. © 2021, The Author(s)

    Measurement of the ttˉZt\bar{t}Z and ttˉWt\bar{t}W production cross sections in multilepton final states using 3.2 fb1^{-1} of pppp collisions at s\sqrt{s} = 13 TeV with the ATLAS detector

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    See paper for full list of authors - 22 pages plus author list + cover page (40 pages total), 8 figures, 5 tables. Submitted to Eur. Phys. J. C. All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/TOPQ-2015-22/International audienceA measurement of the ttˉZt\bar{t}Z and ttˉWt\bar{t}W production cross sections in final states with either two same-charge muons, or three or four leptons (electrons or muons) is presented. The analysis uses a data sample of proton-proton collisions at s=13\sqrt{s} = 13 TeV recorded with the ATLAS detector at the Large Hadron Collider in 2015, corresponding to a total integrated luminosity of 3.2 fb1^{-1}. The inclusive cross sections are extracted using likelihood fits to signal and control regions, resulting in σttˉZ=0.9±0.3\sigma_{t\bar{t}Z} = 0.9 \pm 0.3 pb and σttˉW=1.5±0.8\sigma_{t\bar{t}W} = 1.5 \pm 0.8 pb, in agreement with the Standard Model predictions

    Measurement of the ktk_\mathrm{t} splitting scales in ZZ \to \ell\ell events in pppp collisions at s=8\sqrt{s} = 8 TeV with the ATLAS detector

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    See paper for full list of authors - 42 pages in total, author list starting page 26, 8 figures, 1 table, submitted to JHEP, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/STDM-2015-14/International audienceA measurement of the splitting scales occuring in the ktk_\mathrm{t} jet-clustering algorithm is presented for final states containing a ZZ boson. The measurement is done using 20.2 fb1^{-1} of proton-proton collision data collected at a centre-of-mass energy of s=8\sqrt{s} = 8 TeV by the ATLAS experiment at the LHC in 2012. The measurement is based on charged-particle track information, which is measured with excellent precision in the pTp_\mathrm{T} region relevant for the transition between the perturbative and the non-perturbative regimes. The data distributions are corrected for detector effects, and are found to deviate from state-of-the-art predictions in various regions of the observables

    Search for high-mass dilepton resonances in pp collisions at root s=8 TeV with the ATLAS detector

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    See paper for full list of authors - 14 pages plus author list + cover page (31 pages total), 5 figures, 4 tables, submitted to Physical Review D, All figures including auxiliary figures are available at http://atlas.web.cern.ch/Atlas/GROUPS/PHYSICS/PAPERS/EXOT-2012-19/International audienceThis article describes a search for high-mass resonances decaying to a pair of photons using a sample of 20.320.3 fb1^{-1} of pppp collisions at s=8\sqrt{s}=8 TeV recorded with the ATLAS detector at the Large Hadron Collider. The data are found to be in agreement with the Standard Model prediction, and limits are reported in the framework of the Randall-Sundrum model. This theory leads to the prediction of graviton states, the lightest of which could be observed at the Large Hadron Collider. A lower limit of 2.662.66 (1.411.41) TeV at 95% confidence level is set on the mass of the lightest graviton for couplings of k/MPl=0.1k/\overline{M}_{\mathrm{Pl}} = 0.1 (0.010.01)
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