Flow, spectra and HBT radii in Heavy-Ion collisions

Abstract

The expansion of the fireball created in relativistic heavy ion collisions is described using the 3 + 1D hydrodynamical model. Experimentally observed transverse momentum spectra at different rapdities, elliptic flow and HBT correlations of produced particles can be reproduced. We give estimates of shear viscosity corrections at freeze-out, which we find important only for the elliptic flow coefficient.

Flow and interferometry in (3 + 1)-dimensional viscous hydrodynamics

“…Dissipative effects in the hadronic cascade bring the results of the simulations closer to the data [14]. In terms of the viscous hydrodynamics, one expects stronger shear viscosity corrections at forward rapidities, where the matter freezes-out earlier [52]. (3 + 1)-D viscous hydrodynamic calculations by Schenke et al give a flat dependence of v 2 on the pseudorapidity [8,40], both using the average and fluctuating initial conditions.…”

Directed flow in ultrarelativistic heavy-ion collisions

“…[5], giving satisfactory results. The calculated elliptic flow overshoots the experimental data since we do not take viscosity effects into account [26]. The parameters of the initial profile in space-time rapidity f (η ) are adjusted to reproduce, as closely as possible, the experimental results on pseudorapidity distributions, and transverse momentum spectra at non-zero rapidities [5].…”

Collective flow inp-Pb andd-Pb collisions at TeV energies

“…We observe some reduction of the collective flow at forward and backward pseudorapidities. This reduction is due to an increase of dissipative effects and a shorter life-time of the source at nonzero space-time rapidities [36,37]. The form of the pseudorapidity dependence of the harmonic coefficients of the flow in Fig.…”