HCBM 2010 - Hot and Cold Baryonic Matter 2010

HBT radii from the UrQMD transport approach at different energies

Not scheduled

Hotel Normafa

Speaker

Mr Gunnar Gräf (Frankfurt Institute for Advanced Studies (FIAS), University of Frankfurt)

Description

We use the non-equilibrium transport approach Ultra-relativistic Quantum Molecular Dynamics (UrQMD) [1] to compute the dynamics of heavy ion collisions up to LHC energies. From this model we obtain directly the full phasespace distribution of all particles at the kinetic freeze out. By applying the Correlation After Burner (CRAB) [2] of Scott Pratt we extract the two-particle correlation function in three-dimensions. Using a gaussian parametrization we get the Hanbury-Brown Twiss (HBT) radii from these correlation functions which can be interpreted in terms of the space-time extension [3] of the particle-emitting source. A comparison between the spatial distribution at freeze out and the results from the HBT analysis will be presented. Correlation functions and HBT radii for a broad energy range will be shown. [1] S. A. Bass et al., Prog. Part. Nucl. Phys. 41 (1998) 225. [2] S. Pratt, CRAB version 3, http://www.pa.msu.edu/\~{}pratts/ [3] S. Chapman et al., Phys. Rev. Lett. 74 (1995) 4400