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Influence of Spatial and Dynamical Anisotropies on Flow and Femtoscopy Radii in Relativistic Heavy-Ion Collisions at LHC Energies

1
Skobeltsyn Institute of Nuclear Physics, Moscow State University, RU-119991 Moscow, Russia
2
Department of Physics, University of Oslo, PB 1048 Blindern, N-0316 Oslo, Norway
3
Joint Institute for Nuclear Researches, RU-141980 Dubna, Russia
*
Author to whom correspondence should be addressed.
Presented at the 7th International Conference on New Frontiers in Physics (ICNFP 2018), Crete, Greece, 4–12 July 2018.
Proceedings 2019, 13(1), 3; https://doi.org/10.3390/proceedings2019013003
Published: 20 May 2019
(This article belongs to the Proceedings of The International Conference on New Frontiers in Physics)
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Abstract

We study the influence of spatial and dynamical anisotropies in relativistic heavy-ion collisions on the differential elliptic and triangular flows of charged hadrons and, simultaneously, on the second- and third-order oscillations of the femtoscopic radii. Calculations of Pb + Pb collisions at s = 2.76 TeV were done within the HYDrodynamics with JETs (HYDJET++) event generator, which allows one to investigate the role of each of the anisotropy kinds separately. It is found that the bare geometric anisotropy provides either the wrong sign of elliptic and triangular flows or out-of-phase oscillations of R2out and R2side, respectively. Dynamical anisotropy is able to describe qualitatively both characteristics correctly. For the correct quantitative description of the data, one has to employ both spatial and dynamical anisotropies.
Keywords: relativistic heavy-ion collisions; dynamical and spatial anisotropy; elliptic and triangular flow; azimuthal oscillations of femtoscopic radii relativistic heavy-ion collisions; dynamical and spatial anisotropy; elliptic and triangular flow; azimuthal oscillations of femtoscopic radii
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Zabrodin, E.E.; Bravina, L.V.; Lokhtin, I.P.; Malinina, L.V.; Petrushanko, S.V.; Snigirev, A.M. Influence of Spatial and Dynamical Anisotropies on Flow and Femtoscopy Radii in Relativistic Heavy-Ion Collisions at LHC Energies. Proceedings 2019, 13, 3.

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