Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC

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) Searches for transverse momentum dependent flow vector fluctuations in Pb-Pb and p-Pb collisions at the LHC. Journal of High Energy Physics, 2017 (9). Art.No.32-30. ISSN 1029-8479

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Abstract

The measurement of azimuthal correlations of charged particles is presented for Pb-Pb collisions at √sNN=2.76sNN=2.76 TeV and p-Pb collisions at √sNN=5.02sNN=5.02 TeV with the ALICE detector at the CERN Large Hadron Collider. These correlations are measured for the second, third and fourth order flow vector in the pseudorapidity region |η| < 0.8 as a function of centrality and transverse momentum pT using two observables, to search for evidence of pT-dependent flow vector fluctuations. For Pb-Pb collisions at 2.76 TeV, the measurements indicate that pT-dependent fluctuations are only present for the second order flow vector. Similar results have been found for p-Pb collisions at 5.02 TeV. These measurements are compared to hydrodynamic model calculations with event-by-event geometry fluctuations in the initial state to constrain the initial conditions and transport properties of the matter created in Pb–Pb and p–Pb collisions.

Item Type: Article
Keywords: flow, vector fluctuations, p-Pb, pp
Date: 8 September 2017
Subjects: NATURAL SCIENCES > Physics
Additional Information: Published for SISSA by Springer. Open Access, Copyright CERN, for the benefit of the ALICE Collaboration. Article funded by SCOAP3 and licensed under CC BY 4.0. Received: July 19, 2017. Accepted: August 5, 2017. Published: September 8, 2017.
Divisions: Faculty of Science > Department of Physics
Publisher: Springer
Depositing User: Gordana Stubičan Ladešić
Date Deposited: 01 Oct 2017 16:48
Last Modified: 01 May 2018 18:32
URI: http://digre.pmf.unizg.hr/id/eprint/5597

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