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Type: Journal article
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
Author: Aad, G.
Abbott, B.
Abbott, D.C.
Abud, A.A.
Abeling, K.
Abhayasinghe, D.K.
Abidi, S.H.
AbouZeid, O.S.
Abraham, N.L.
Abramowicz, H.
Abreu, H.
Abulaiti, Y.
Acharya, B.S.
Achkar, B.
Adachi, S.
Adam, L.
Bourdarios, C.A.
Adamczyk, L.
Adamek, L.
Adelman, J.
et al.
Citation: European Physical Journal C, 2020; 80(1):73-1-73-31
Publisher: Springer Nature
Issue Date: 2020
ISSN: 1434-6044
Statement of
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 (, 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.
RMID: 1000014536
DOI: 10.1140/epjc/s10052-020-7624-4
Appears in Collections:Physics publications

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