Journal Article

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2020-07-03
13:01
DBCoverage [PUBDB-2020-02556] Journal Article
et al
Search for new resonances in mass distributions of jet pairs using 139 fb$^{-1}$ of $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
[CERN-EP-2019-162; arXiv:1910.08447]
A search for new resonances decaying into a pair of jets is reported using the dataset of proton-proton collisions recorded at $ \sqrt{s} $ = 13 TeV with the ATLAS detector at the Large Hadron Collider between 2015 and 2018, corresponding to an integrated luminosity of 139 fb$^{−1}$. The distribution of the invariant mass of the two leading jets is examined for local excesses above a data-derived estimate of the Standard Model background [...]
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2020-07-03
12:02
DBCoverage [PUBDB-2020-02552] Journal Article
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Measurement of the $t\bar{t}$ production cross-section and lepton differential distributions in $e\mu$ dilepton events from $pp$ collisions at $\sqrt{s}=13$ TeV with the ATLAS detector
[CERN-EP-2019-203; arXiv:1910.08819]
The inclusive top quark pair ($t\bar{t}$) production cross-section $\sigma _{t\bar{t}}$ has been measured in proton–proton collisions at $\sqrt{s}=13\,\text {TeV}$, using 36.1 fb$^{-1}$ of data collected in 2015–2016 by the ATLAS experiment at the LHC. Using events with an opposite-charge $e\mu $ pair and b-tagged jets, the cross-section is measured to be: $\begin{aligned} \sigma _{t\bar{t}} = 826.4 \pm 3.6\,\mathrm {(stat)}\ \pm 11.5\,\mathrm {(syst)}\ \pm 15.7\,\mathrm {(lumi)}\ \pm 1.9\,\mathrm {(beam)}\,\mathrm {pb}, \end{aligned}$where the uncertainties reflect the limited size of the data sample, experimental and theoretical systematic effects, the integrated luminosity, and the LHC beam energy, giving a total uncertainty of 2.4%. [...]
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2020-07-03
11:32
DBCoverage [PUBDB-2020-02549] Journal Article
et al
Evidence for electroweak production of two jets in association with a $Z\gamma$ pair in $pp$ collisions at $\sqrt{s} = 13$ TeV with the ATLAS detector
[CERN-EP-2019-206; arXiv:1910.09503]
Evidence for electroweak production of two jets in association with a Zγ pair in s=13 TeV proton–proton collisions at the Large Hadron Collider is presented. The analysis uses data collected by the ATLAS detector in 2015 and 2016 that corresponds to an integrated luminosity of 36.1fb−1 . [...]
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2020-07-03
11:07
DBCoverage [PUBDB-2020-02546] Journal Article
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$Z$ boson production in Pb+Pb collisions at $\sqrt{s_{\textrm{NN}}}$= 5.02 TeV measured by the ATLAS experiment
[CERN-EP-2019-182; arXiv:1910.13396]
The production yield of Z bosons is measured in the electron and muon decay channels in Pb+Pb collisions at sNN=5.02 TeV with the ATLAS detector. Data from the 2015 LHC run corresponding to an integrated luminosity of 0.49 nb−1 are used for the analysis. [...]
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2020-07-03
09:59
DBCoverage [PUBDB-2020-02543] Journal Article
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Transverse momentum and process dependent azimuthal anisotropies in $\sqrt{s_{\mathrm{NN}}}=8.16$ TeV $p$+Pb collisions with the ATLAS detector
[CERN-EP-2019-217; arXiv:1910.13978]
The azimuthal anisotropy of charged particles produced in $\sqrt{s_{\mathrm {NN}}}=8.16$ TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 $\mathrm {nb}^{-1}$ that was collected in 2016. [...]
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2020-07-03
09:46
DBCoverage [PUBDB-2020-02542] Journal Article
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Measurement of differential cross sections for single diffractive dissociation in $\sqrt{s} = 8$ TeV $pp$ collisions using the ATLAS ALFA spectrometer
[CERN-EP-2019-190; arXiv:1911.00453]
A dedicated sample of Large Hadron Collider proton-proton collision data at centre-of-mass energy $ \sqrt{s} $ = 8 TeV is used to study inclusive single diffractive dissociation, pp → X p. The intact final-state proton is reconstructed in the ATLAS ALFA forward spectrometer, while charged particles from the dissociated system X are measured in the central detector components [...]
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2020-07-02
13:41
arXiv [PUBDB-2020-02537] Journal Article
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ATLAS data quality operations and performance for 2015-2018 data-taking
[CERN-EP-2019-207; arXiv:1911.04632]
The ATLAS detector at the Large Hadron Collider reads out particle collision data from over 100 million electronic channels at a rate of approximately 100 kHz, with a recording rate for physics events of approximately 1 kHz. Before being certified for physics analysis at computer centres worldwide, the data must be scrutinised to ensure they are clean from any hardware or software related issues that may compromise their integrity. [...]
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2020-07-02
12:36
arXiv [PUBDB-2020-02536] Journal Article
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Measurement of the azimuthal anisotropy of charged-particle production in $Xe+Xe$ collisions at $\sqrt{s_{\mathrm{NN}}}=5.44$ TeV with the ATLAS detector
[CERN-EP-2019-227; arXiv:1911.04812]
This paper describes the measurements of flow harmonics v2–v6 in 3μb−1 of Xe+Xe collisions at sNN=5.44 TeV performed using the ATLAS detector at the Large Hadron Collider (LHC). Measurements of the centrality, multiplicity, and pT dependence of the vn obtained using two-particle correlations and the scalar product technique are presented. [...]
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2020-07-02
11:55
DBCoverage [PUBDB-2020-02534] Journal Article
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Measurement of the $Z(\rightarrow\ell^+\ell^-)\gamma$ production cross-section in $pp$ collisions at $\sqrt{s} =13$ TeV with the ATLAS detector
[CERN-EP-2019-228; arXiv:1911.04813]
The production of a prompt photon in association with a $Z$ boson is studied in proton-proton collisions at a centre-of-mass energy $\sqrt{s} =$ 13 TeV. The analysis uses a data sample with an integrated luminosity of 139 fb$^{-1}$ collected by the ATLAS detector at the LHC from 2015 to 2018. [...]
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2020-07-02
11:29
arXiv [PUBDB-2020-02533] Journal Article
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Search for direct stau production in events with two hadronic $\tau$-leptons in $\sqrt{s} = 13$ TeV $pp$ collisions with the ATLAS detector
[CERN-EP-2019-191; arXiv:1911.06660]
A search for the direct production of the supersymmetric partners of τ-leptons (staus) in final states with two hadronically decaying τ-leptons is presented. The analysis uses a dataset of pp collisions corresponding to an integrated luminosity of 139  fb-1, recorded with the ATLAS detector at the Large Hadron Collider at a center-of-mass energy of 13 TeV. [...]
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