Uniform description of soft observables in heavy-ion collisions at sqrt sNN =200 GeV.
We investigate the hydrodynamic evolution of the system formed in ultrarelativistic heavy-ion collisions and find that an appropriate choice of the initial condition, specifically a simple two-dimensional Gaussian profile for the transverse energy, in conjunction with a realistic equation of state, leads to a uniform description of soft observables measured at the relativistic heavy-ion collider. In particular, the transverse-momentum spectra, the elliptic-flow, and the Hanbury-Brown-Twiss correlation radii, including the ratio Rout/Rside as well as the dependence of the radii on the azimuthal angle, are all properly described.
Broniowski
Wojciech
W
The H. Niewodniczański Institute of Nuclear Physics, Polish Academy of Sciences, PL-31342 Kraków, Poland.
Chojnacki
Mikolaj
M
Florkowski
Wojciech
W
Kisiel
Adam
A