Viscous Flow in Heavy-Ion Collisions from RHIC to LHC

We present a systematic hydrodynamic study of the evolution of hadron spectra and their azimuthal anisotropy from the lowest collision energy studied at the Relativistic Heavy Ion Collider (RHIC), p s = 7:7A GeV, to the highest energy reachable at the Large Hadron Collider (LHC), p s = 5500A GeV [4]. The energy dependence of the flow observables are quantitatively studied for both the Monte-Carlo Glauber and Monte-Carlo Kharzeev-Levin-Nardi (MC-KLN) models. For MC-Glauber model initial conditions with= s = 0:08, the di erential charged hadron elliptic flow v ch (pT; p s) is found to exhibit a very broad maximum in the region 39 p s 2760A GeV. For MC-KLN initial conditions with= s = 0:2, a similar “saturation” is not observed up to LHC energies. We emphasize that this “saturation” of elliptic flow arises from the interplay between radial flow and elliptic flow which shifts with p s depending on the fluid’s viscosity. By generalizing the definition of spatial eccentricity to isothermal hyper-surface, we also calculate "x on the kinetic freeze-out surface at di erent collision energies.

• Publication year

  2012

• Venue

  Nuclear Physics

• Publication date

  2012-10-07

• Fields of study

  Physics

• Identifiers
  DOI 10.1016/j.nuclphysa.2013.02.024arXiv 1210.2074
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar

• No claims are published for this paper.

• No concepts are published for this paper.

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