Core-corona separation in the UrQMD hybrid model

Details Core-corona separation in the UrQMD hybrid model Core-corona separation in the UrQMD hybrid model

2011-04-20

arxiv.org/abs/1104.3981v2

Phys.Rev.C84:024905,2011

Physics

High Energy Physics

High Energy Physics - Phenomenology

10 pages, 11 figures, version accepted by PRC

Scientific paper

10.1103/PhysRevC.84.024905

We employ the UrQMD transport + hydrodynamics hybrid model to estimate the effects of a separation of the hot equilibrated core and the dilute corona created in high energy heavy ion collisions. It is shown that the fraction of the system which can be regarded as an equilibrated fireball changes over a wide range of energies. This has an impact especially on strange particle abundancies. We show that such a core corona separation allows to improve the description of strange particle ratios and flow as a function of beam energy as well as strange particle yields as a function of centrality.

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