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Measurement of the azimuthal anisotropy of charged-particle production in Xe plus Xe collisions at root S-NN=5.44 TeV with the ATLAS detector
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.ORCID iD: 0000-0002-1253-8583
Uppsala University, Disciplinary Domain of Science and Technology, Physics, Department of Physics and Astronomy, High Energy Physics.ORCID iD: 0000-0002-8204-4124
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Number of Authors: 28922020 (English)In: Physical Review C: Covering Nuclear Physics, ISSN 2469-9985, E-ISSN 2469-9993, Vol. 101, no 2, article id 024906Article in journal (Refereed) Published
Abstract [en]

This paper describes the measurements of flow harmonics v(2)-v(6) in 3 mu b(-1) of Xe Xe collisions at root S-NN = 5.44 TeV performed using the ATLAS detector at the Large Hadron Collider (LHC). Measurements of the centrality, multiplicity, and p(T) dependence of the v(n) obtained using two-particle correlations and the scalar product technique are presented. The measurements are also performed using a template-fit procedure, which was developed to remove nonflow correlations in small collision systems. This nonflow removal is shown to have a significant influence on the measured v(n) at high p(T), especially in peripheral events. Comparisons of the measured v(n) with measurements in Pb + Pb collisions and p + Pb collisions at root S-NN = 5.02 TeV are also presented. The v(n) values in Xe + Xe collisions are observed to be larger than those in Pb + Pb collisions for n = 2, 3, and 4 in the most central events. However, with decreasing centrality or increasing harmonic order n, the v(n) values in Xe + Xe collisions become smaller than those in Pb + Pb collisions. The v(n) in Xe + Xe and Pb + Pb collisions are also compared as a function of the mean number of participating nucleons, < N-part >, and the measured charged-particle multiplicity in the detector. The v(3) values in Xe + Xe and Pb + Pb collisions are observed to be similar at the same < N-part > or multiplicity, but the other harmonics are significantly different. The ratios of the measured v(n) in Xe + Xe and Pb + Pb collisions, as a function of centrality, are also compared to theoretical calculations.

Place, publisher, year, edition, pages
AMER PHYSICAL SOC , 2020. Vol. 101, no 2, article id 024906
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Subatomic Physics
Identifiers
URN: urn:nbn:se:uu:diva-407465DOI: 10.1103/PhysRevC.101.024906ISI: 000513213800003OAI: oai:DiVA.org:uu-407465DiVA, id: diva2:1417112
Funder
Swedish Research CouncilEU, European Research CouncilEU, Horizon 2020
Note

For complete list of authors see http://dx.doi.org/10.1103/PhysRevC.101.024906

Available from: 2020-03-26 Created: 2020-03-26 Last updated: 2020-03-26Bibliographically approved

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Asimakopoulou, Eleni M.Bergeås Kuutmann, ElinBrenner, RichardEkelöf, TordEllajosyula, VenugopalEllert, MattiasFerrari, ArnaudIsacson, MaxMårtensson, Mikael U. F.

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Asimakopoulou, Eleni M.Bergeås Kuutmann, ElinBrenner, RichardEkelöf, TordEllajosyula, VenugopalEllert, MattiasFerrari, ArnaudIsacson, MaxMårtensson, Mikael U. F.
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4243444546474845 of 459
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