Linear and non-linear flow mode in Pb–Pb collisions at √sNN = 2.76 TeV

Acharya, S. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Jerčić, Marko and Lončar, P. and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zou, S. (ALICE Collaboration) (2017) Linear and non-linear flow mode in Pb–Pb collisions at √sNN = 2.76 TeV. Physics Letters B, 773. pp. 68-80. ISSN 0370-2693

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The second and the third order anisotropic flow, V2 and V3, are mostly determined by the corresponding initial spatial anisotropy coefficients, ε2 and ε3, in the initial density distribution. In addition to their dependence on the same order initial anisotropy coefficient, higher order anisotropic flow, Vn (n > 3), can also have a significant contribution from lower order initial anisotropy coefficients, which leads to mode-coupling effects. In this Letter we investigate the linear and non-linear modes in higher order anisotropic flow Vn for n = 4, 5, 6 with the ALICE detector at the Large Hadron Collider. The measurements are done for particles in the pseudorapidity range |η| < 0.8 and the transverse momentum range 0.2 < pT < 5.0 GeV/c as a function of collision centrality. The results are compared with theoretical calculations and provide important constraints on the initial conditions, including initial spatial geometry and its fluctuations, as well as the ratio of the shear viscosity to entropy density of the produced system.

Item Type: Article
Date: 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2017 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY license ( Funded by SCOAP3. Received 22 May 2017. Received in revised form 10 July 2017. Accepted 27 July 2017. Available online 4 August 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 08 Sep 2017 15:22
Last Modified: 08 Sep 2017 15:22

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