Predictions for 5.023 TeV Pb + Pb collisions at the CERN Large Hadron Collider

H. Niemi, K. J. Eskola, R. Paatelainen, and K. Tuominen
Phys. Rev. C 93, 014912 – Published 29 January 2016

Abstract

We compute predictions for various low-transverse-momentum bulk observables in sNN=5.023 TeV Pb+Pb collisions at the CERN Large Hadron Collider (LHC) from the event-by-event next-to-leading-order perturbative-QCD + saturation + viscous hydrodynamics (“EKRT”) model. In particular, we consider the centrality dependence of charged hadron multiplicity, flow coefficients of the azimuth-angle asymmetries, and correlations of event-plane angles. The centrality dependencies of the studied observables are predicted to be very similar to those at 2.76 TeV, and the magnitudes of the flow coefficients and event-plane angle correlations are predicted to be close to those at 2.76 TeV. The flow coefficients may, however, offer slightly more discriminating power on the temperature dependence of QCD matter viscosity than the 2.76 TeV measurements. Our prediction for the multiplicity in the 0–5 % centrality class, obtained using the two temperature-dependent shear-viscosity-to-entropy ratios that give the best overall fit to BNL Relativistic Heavy Ion Collider (RHIC) and LHC data is dNch/dη||η|0.5=18762046. We also predict a power-law increase from 200 GeV Au+Au collisions at RHIC to 2.76 and 5.023 TeV Pb+Pb collisions at the LHC, dNch/dη||η|0.5s0.1640.174.

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  • Received 18 November 2015

DOI:https://doi.org/10.1103/PhysRevC.93.014912

©2016 American Physical Society

Physics Subject Headings (PhySH)

Nuclear Physics

Authors & Affiliations

H. Niemi1, K. J. Eskola2,3, R. Paatelainen4, and K. Tuominen3,5

  • 1Institut für Theoretische Physik, Johann Wolfgang Goethe-Universität, Max-von-Laue-Str. 1, D-60438 Frankfurt am Main, Germany
  • 2University of Jyvaskyla, Department of Physics, P.O. Box 35, FI-40014 University of Jyvaskyla, Finland
  • 3Helsinki Institute of Physics, P.O. Box 64, FI-00014 University of Helsinki, Finland
  • 4Departamento de Fisica de Particulas, Universidade de Santiago de Compostela, E-15782 Santiago de Compostela, Galicia, Spain
  • 5Deparment of Physics, University of Helsinki, P.O. Box 64, FI-00014 University of Helsinki, Finland

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Vol. 93, Iss. 1 — January 2016

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