• Open Access

Predictions for multiplicities and flow harmonics in 5.44 TeV Xe+Xe collisions at the CERN Large Hadron Collider

K. J. Eskola, H. Niemi, R. Paatelainen, and K. Tuominen
Phys. Rev. C 97, 034911 – Published 19 March 2018

Abstract

We present the event-by-event next-to-leading-order perturbative-QCD + saturation + viscous hydrodynamics (EKRT) model predictions for the centrality dependence of the charged hadron multiplicity in the pseudorapidity interval |η|0.5, and for the centrality dependence of the charged hadron flow harmonics vn{2} obtained from two-particle cumulants, in sNN=5.44 TeV Xe+Xe collisions at the CERN Large Hadron Collider. Our prediction for the 0–5 % central charged multiplicity is dNch/dη=1218±46. We also predict vn{2} in Xe+Xe collisions to increase more slowly from central towards peripheral collisions than those in a Pb+Pb system. We find that at 10,,50% centralities v2{2} is smaller and v3{2} is larger than in the Pb+Pb system while v4{2} is of the same magnitude in both systems. We also find that the ratio of flow harmonics in Xe+Xe collisions and in Pb+Pb collisions shows a slight sensitivity to the temperature dependence of the shear-viscosity–to–entropy ratio. As we discuss here, the new nuclear mass-number systematics especially in the flow harmonics serves as a welcome further constraint for describing the space-time evolution of a heavy-ion system and for determining the shear viscosity and other transport properties of strongly interacting matter.

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  • Received 29 November 2017

DOI:https://doi.org/10.1103/PhysRevC.97.034911

Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI. Funded by SCOAP3.

Published by the American Physical Society

Physics Subject Headings (PhySH)

Particles & Fields

Authors & Affiliations

K. J. Eskola1,2, H. Niemi1,2,3, R. Paatelainen2,4, and K. Tuominen2,4

  • 1University of Jyvaskyla, Department of Physics, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland
  • 2Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
  • 3Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany
  • 4Department of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland

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Issue

Vol. 97, Iss. 3 — March 2018

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