Accelerating hydrodynamic description of pseudorapidity density and the initial energy density in p+p, Cu+Cu, Au+Au, and Pb+Pb collisions at RHIC and LHC

Abstract

A known class of analytic, exact, accelerating solutions of prefect relativistic hydrodynamics with longitudinal acceleration is utilized to describe results on the pseudorapidity distributions for different collision systems. These results include $dN/d\eta$ measured in p+p, Cu+Cu, Au+Au, and Pb+Pb collisions at RHIC and LHC, in a broad centrality range. Going beyond the traditional Bjorken model, from the accelerating hydrodynamic description we determine the initial energy density and other thermodynamic quantities in those collisions.

21 pages, 7 figures

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Cited by in corpus (10)

• (3+1)-D viscous hydrodynamics CLVisc at finite net baryon density: identified particle spectra, anisotropic flows and flow fluctuations across BES energies
• Longitudinal fluctuations and decorrelations of anisotropic flows at the LHC and RHIC energies
• Perturbation solutions of relativistic viscous hydrodynamics for longitudinally expanding fireballs
• 1+1 dimensional relativistic magnetohydrodynamics with longitudinal acceleration
• System size and shape dependences of collective flow fluctuations in relativistic nuclear collisions
• Second order transport coefficients of nonconformal relativistic fluids in various dimensions from Dp-brane
• Accelerating longitudinal expansion of resistive relativistic-magneto-hydrodynamics in heavy ion collisions
• Effect of global momentum conservation on longitudinal flow decorrelation
• Charged particle pseudorapidity distributions measured with the STAR EPD
• Hydrodynamic description of direct photon spectra and elliptic flow in Pb+Pb collisions at LHC