Transverse hydrodynamics with sudden hadronization -- production of strangeness

Details Transverse hydrodynamics with sudden hadronization -- production of strangeness Transverse hydrodynamics with sudden hadronization -- production of strangeness

2009-12-17

arxiv.org/abs/0912.3451v1

Physics

Nuclear Physics

Nuclear Theory

talk presented by WF at the Strangeness in Quark Matter Conference, Buzios, Brazil, Sept. 27 - oct. 2, 2009

Scientific paper

We consider a physical scenario for ultra-relativistic heavy-ion collisions where, at the early stage, only transverse degrees of freedom of partons are thermalized, while the longitudinal motion is described by free streaming. When the energy density of the partonic system drops to a certain critical value, the partons hadronize and the newly formed hadronic system freezes out. This sudden change is described with the help of the Landau matching conditions followed by the simulations done with THERMINATOR. The proposed scenario reproduces well the transverse-momentum spectra, the elliptic flow coefficient v2, and the HBT radii of pions and kaons studied at RHIC (Au+Au collisions at the top beam energy). It also reproduces quite well the transverse-momentum spectra of hyperons.

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