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Hydrodynamic attractors, initial state energy and particle production in relativistic nuclear collisions

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arxiv 1908.02866 v3 pith:2EHR6D7X submitted 2019-08-07 hep-ph nucl-exnucl-th

classification hep-phnucl-exnucl-th
keywords energycollisionsinitialparticlestateattractorshydrodynamicnuclear
verification ladder T0 review T1 audit T2 compute T3 formal
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We exploit the concept of hydrodynamic attractors to establish a general relation between the initial state energy and the produced particle multiplicities in high-energy nuclear collisions. When combined with an ab initio model of energy deposition, the entropy production during the pre-equilibrium phase naturally explains the universal centrality dependence of the measured charged particle yields in nucleus-nucleus collisions. We further estimate the energy density of the far-from-equilibrium initial state and discuss how our results can be used to constrain non-equilibrium properties of the quark-gluon plasma.

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Cited by 6 Pith papers

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