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ATLAS Preprints

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2018-05-15
13:29
Measurement of the nuclear modification factor for inclusive jets in Pb+Pb collisions at $\sqrt{s_\mathrm{NN}}=5.02$ TeV with the ATLAS detector / ATLAS Collaboration
Measurements of the yield and nuclear modification factor, $R_\mathrm{ AA}$, for inclusive jet production are performed using 0.49 nb$^{-1}$ of Pb+Pb data at $\sqrt{s_\mathrm{NN}} = 5.02$ TeV and 25 pb$^{-1}$ of $pp$ data at $\sqrt{s}=5.02$ TeV with the ATLAS detector at the LHC. [...]
CERN-EP-2018-105 ; CERN-EP-2018-105 ; arXiv:1805.05635.
- 2018. - 36 p.
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2018-05-15
13:20
Measurement of the suppression and azimuthal anisotropy of muons from heavy-flavor decays in Pb+Pb collisions at $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV with the ATLAS detector / ATLAS Collaboration
ATLAS measurements of the production of muons from heavy-flavor decays in $\sqrt{s_{\mathrm{NN}}} = 2.76$ TeV Pb+Pb collisions and $\sqrt{s} = 2.76$ TeV $pp$ collisions at the LHC are presented. [...]
CERN-EP-2018-072 ; CERN-EP-2018-072 ; arXiv:1805.05220.
- 2018. - 55 p, 55 p.
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2018-05-15
11:28
Measurement of jet fragmentation in Pb+Pb and $pp$ collisions at $\sqrt{s_{NN}} = 5.02$ TeV with the ATLAS detector / ATLAS Collaboration
This paper presents a measurement of jet fragmentation functions in 0.49 nb$^{-1}$ of Pb+Pb collisions and 25 pb$^{-1}$ of $pp$ collisions at $\sqrt{s_{NN}} = 5.02$ TeV collected in 2015 with the ATLAS detector at the LHC. [...]
CERN-EP-2018-096 ; CERN-EP-2018-096 ; arXiv:1805.05424.
- 2018. - 55 p.
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2018-05-14
15:05
Measurement of dijet azimuthal decorrelations in $pp$ collisions at $\sqrt{s}=8$ TeV with the ATLAS detector and determination of the strong coupling / ATLAS Collaboration
A measurement of the rapidity and transverse momentum dependence of dijet azimuthal decorrelations is presented, using the quantity $R_{\Delta \phi}$. [...]
CERN-EP-2017-282 ; arXiv:1805.04691.
- 2018. - 46 p.
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2018-05-11
08:47
Prompt and non-prompt $J/\psi$ and $\psi(2\mathrm{S})$ suppression at high transverse momentum in 5.02 TeV Pb+Pb collisions with the ATLAS experiment / ATLAS Collaboration
A measurement of $J/\psi$ and $\psi(2\mathrm{S})$ production is presented. [...]
CERN-EP-2018-049 ; CERN-EP-2018-049 ; arXiv:1805.04077.
- 2018. - 39 p.
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2018-05-11
08:34
Angular analysis of $B^0_d \to K^{*}\mu^+\mu^-$ decays in $pp$ collisions at $\sqrt{s}= 8$ TeV with the ATLAS detector / ATLAS Collaboration
An angular analysis of the decay $B^0_d \to K^{*}\mu^+\mu^-$ is presented, based on proton-proton collision data recorded by the ATLAS experiment at the LHC. [...]
CERN-EP-2017-161 ; CERN-EP-2017-161 ; arXiv:1805.04000.
- 2018. - 47 p.
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2018-05-09
18:01
Search for flavor-changing neutral currents in top quark decays $t\to Hc$ and $t \to Hu$ in multilepton final states in proton--proton collisions at $\sqrt{s}= 13$ TeV with the ATLAS detector / ATLAS Collaboration
Flavor-changing neutral currents are not present in the Standard Model at tree level and are suppressed in loop processes by the unitarity of the Cabibbo--Kobayashi--Maskawa matrix; the corresponding rates for top quark decay processes are experimentally unobservable. [...]
CERN-EP-2018-067 ; arXiv:1805.03483.
- 2018. - 36 p.
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2018-05-08
18:59
Measurement of colour flow using jet-pull observables in $t\bar{t}$ events with the ATLAS experiment at $\sqrt{s} = 13$ TeV / ATLAS Collaboration
Previous phenomenological studies and measurements have shown that weighted angular moments derived from jet constituents encode the colour connections between initiating partons that seed the jets. [...]
CERN-EP-2018-041 ; CERN-EP-2018-041 ; arXiv:1805.02935.
- 2018. - 45 p.
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2018-05-07
10:48
Associated top production (ttV, tV) in ATLAS and CMS / Sánchez Cruz, Sergio /ATLAS and CMS Collaborations
A set of measurements of top quark pair and single top quark production in association with standard model (SM) bosons performed by the CMS and ATLAS Collaborations is presented. The consistency of these results among themselves and with the SM prediction is discussed. [...]
CMS CR-2018/033; CMS-CR-2018-033; arXiv:1805.02024.- Geneva : CERN, 2018 - 7 p. Fulltext: 1805.02024 - PDF; CO2018_033 - PDF;
In : 53rd Rencontres de Moriond on Electroweak Interactions and Unified Theories, La Thuile, Italy, 10 - 17 Mar 2018

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2018-05-06
13:36
Measurements of $b$-jet tagging efficiency with the ATLAS detector using $t\bar{t}$ events at $\sqrt{s}=13$ TeV / ATLAS Collaboration
The efficiency to identify jets containing $b$-hadrons ($b$-jets) is measured using a high purity sample of dileptonic top quark--antiquark pairs ($t\bar{t}$) selected from the 36.1 fb$^{-1}$ of data collected by the ATLAS detector in 2015 and 2016 from proton--proton collisions produced by the Large Hadron Collider at a centre-of-mass energy $\sqrt{s}=13$ TeV. [...]
CERN-EP-2018-047 ; CERN-EP-2018-047 ; arXiv:1805.01845.
- 2018. - 48 p.
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