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|Title:||Transverse momentum and process dependent azimuthal anisotropies in √sNN = 8.16 TeV p+Pb collisions with the ATLAS detector|
|Other Titles:||Transverse momentum and process dependent azimuthal anisotropies in root sNN = 8.16 TeV p+Pb collisions with the ATLAS detector|
|Citation:||European Physical Journal C, 2020; 80(1):73-1-73-31|
|G. Aad … D. Duvnjak … P. Jackson … A. Petridis … A. Qureshi … A.S. Sharma … M.J. White .. et al [The ATLAS Collaboration].|
|Abstract:||The azimuthal anisotropy of charged particles produced in √sNN = 8.16 TeV p+Pb collisions is measured with the ATLAS detector at the LHC. The data correspond to an integrated luminosity of 165 nb⁻¹ that was collected in 2016. Azimuthal anisotropy coefficients, elliptic v2 and triangular v3, extracted using two-particle correlations with a non-flow template fit procedure, are presented as a function of particle transverse momentum (pT) between 0.5 and 50 GeV. The v2 results are also reported as a function of centrality in three different particle pT intervals. The results are reported from minimum-bias events and jet-triggered events, where two jet pT thresholds are used. The anisotropies for particles with pT less than about 2 GeV are consistent with hydrodynamic flow expectations, while the significant non-zero anisotropies for pT in the range 9–50 GeV are not explained within current theoretical frameworks. In the pT range 2–9 GeV, the anisotropies are larger in minimum-bias than in jet-triggered events. Possible origins of these effects, such as the changing admixture of particles from hard scattering and the underlying event, are discussed.|
|Rights:||© CERN for the benefit of the ATLAS collaboration 2020. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. Funded by SCOAP³.|
|Appears in Collections:||Physics publications|
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