Predictions for 5.023 TeV Pb+Pb collisions at the LHC
Abstract
We compute predictions for various lowtransversemomentum bulk observables in $\sqrt{s_{NN}} = 5.023$ TeV Pb+Pb collisions at the LHC from the eventbyevent nexttoleadingorder perturbativeQCD + saturation + viscous hydrodynamics ("EKRT") model. In particular, we consider the centrality dependence of charged hadron multiplicity, flow coefficients of the azimuthangle asymmetries and correlations of eventplane 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 eventplane 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 05\% centrality class, obtained using the two temperaturedependent shearviscositytoentropy ratios that give the best overall fit to RHIC and LHC data is $dN_{\rm ch}/d\eta\big_{\eta\le 0.5} =1876\dots2046$. We also predict a powerlaw increase from 200 GeV Au+Au collisions at RHIC to 2.76 and 5.023 TeV Pb+Pb collisions at the LHC, $dN_{\rm ch}/d\eta\big_{\eta\le 0.5} \propto s^{0.164\dots0.174}$.
 Publication:

arXiv eprints
 Pub Date:
 November 2015
 arXiv:
 arXiv:1511.04296
 Bibcode:
 2015arXiv151104296N
 Keywords:

 High Energy Physics  Phenomenology;
 Nuclear Theory
 EPrint:
 8 pages, 7 figures