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 , and for the centrality dependence of the charged hadron flow harmonics obtained from two-particle cumulants, in TeV Xe+Xe collisions at the CERN Large Hadron Collider. Our prediction for the 0–5 % central charged multiplicity is . We also predict in Xe+Xe collisions to increase more slowly from central towards peripheral collisions than those in a Pb+Pb system. We find that at centralities is smaller and is larger than in the Pb+Pb system while 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.
- Received 29 November 2017
DOI:https://doi.org/10.1103/PhysRevC.97.034911
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Published by the American Physical Society