https://doi.org/10.1140/epja/i2008-10717-0
Regular Article - Theoretical Physics
Pion mass shift and the kinetic freeze-out process
1
Section for Theoretical and Computational Physics, and Bergen Computational Physics Laboratory, University of Bergen, 5007, Bergen, Norway
2
MTA-KFKI, Research Institute of Particle and Nuclear Physics, 114, 1525 Budapest, Hungary
* e-mail: sven.zschocke@tu-dresden.de
Received:
15
September
2008
Revised:
22
December
2008
Accepted:
30
December
2008
Published online:
11
February
2009
The kinetic freeze-out process of a pion gas through a finite layer with time-like normal is considered. The pion gas is described by a Boltzmann gas with elastic collisions among the pions. Within this model, the impact of the in-medium pion mass modification on the freeze-out process is studied. A marginal change of the freeze-out variables temperature and flow velocity and an insignificant modification of the frozen-out particle distribution function has been found.
PACS: 24.10.Nz Hydrodynamic models – / 25.75.-q Relativistic heavy-ion collisions –
© SIF, Springer-Verlag Berlin Heidelberg, 2009
