Pseudorapidity dependence of the anisotropic flow of charged particles in Pb-Pb collisions at √sNN=2.76 TeV

Adam, J. and Antičić, Tome and Erhardt, Filip and Gotovac, Sven and Mudnić, Eugen and Planinić, Mirko and Poljak, Nikola and Simatović, Goran and Utrobičić, Antonija and Vicković, Linda and Zyzak, M. (ALICE Collaboration) (2016) Pseudorapidity dependence of the anisotropic flow of charged particles in Pb-Pb collisions at √sNN=2.76 TeV. Physics Letters B, 762. pp. 376-388. ISSN 0370-2693

[img]
Preview
PDF - Published Version
Available under License Creative Commons Attribution.
Language: English

Download (1MB) | Preview

Abstract

We present measurements of the elliptic (v2), triangular (v3) and quadrangular (v4) anisotropic azimuthal flow over a wide range of pseudorapidities (−3.5< η< 5). The measurements are performed with Pb-Pb collisions at √sNN=2.76 TeV using the ALICE detector at the Large Hadron Collider (LHC). The flow harmonics are obtained using two- and four-particle correlations from nine different centrality intervals covering central to peripheral collisions. We find that the shape of vn(η) is largely independent of centrality for the flow harmonics n=2−4, however the higher harmonics fall off more steeply with increasing |η|. We assess the validity of extended longitudinal scaling of v2 by comparing to lower energy measurements, and find that the higher harmonic flow coefficients are proportional to the charged particle densities at larger pseudorapidities. Finally, we compare our measurements to both hydrodynamical and transport models, and find they both have challenges when it comes to describing our data.

Item Type: Article
Keywords: pseudorapidity, anisotropic flow, lead-lead
Date: 10 November 2016
Subjects: NATURAL SCIENCES > Physics
Additional Information: © 2016 The Author. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). Funded by SCOAP3. Received 17 May 2016. Received in revised form 21 June 2016. Accepted 6 July 2016. Available online 11 July 2016.
Divisions: Faculty of Science > Department of Physics
Publisher: Elsevier
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 28 Oct 2017 17:50
Last Modified: 28 Oct 2017 17:50
URI: http://digre.pmf.unizg.hr/id/eprint/5630

Actions (login required)

View Item View Item