NUKLEONIKA 2006, 51(Suppl. 3):s43-s46

FREEZE-OUT PROCESS WITH IN-MEDIUM NUCLEON MASS

Sven Zschocke1,2, Laszlo P. Csernai1,3, Etele Molnár1, Jaakko Manninen1,4, Agnes Nyiri1

1 Section for Theoretical and Computational Physics, and Bergen Computational Physics Laboratory, University of Bergen, 5007 Bergen, Norway
2 Forschungszentrum Rossendorf, 01314 Dresden, Germany
3 MTA-KFKI, Research Institute of Particle and Nuclear Physics, 1525 Budapest 114, Hungary
4 University of Oulu, Department of Physical Sciences, 90571 Oulu, Finland

We investigate the kinetic freeze-out scenario of a nucleon gas through a finite layer. The in-medium mass modification of nucleons and its impact on the freeze-out process is studied. A considerable modification of the thermodynamical parameters temperature, flow-velocity, energy density and particle density has been found in comparison with evaluations which use a constant vacuum nucleon mass.