Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2005-04-11
Nucl.Phys.A762:147-166,2005
Physics
Nuclear Physics
Nuclear Theory
26 pages, 8 figures; Nucl.Phys. A, accepted
Scientific paper
10.1016/j.nuclphysa.2005.08.007
The production/absorption rate of particles in compressed and heated asymmetric matter is studied using a Relativistic Mean Field (RMF) transport model with an isospin dependent collision term. Just from energy conservation in the elementary production/absorption processes we expect to see a strong dependence of the yields on the basic Lorentz structure of the isovector effective interaction, due to isospin effects on the scalar and vector self-energies of the hadrons. This will be particularly evident for the ratio of the rates of particles produced with different charges: results are shown for \pi(+)/\pi(-), K(+)/K(0) yields. In order to simplify the analysis we perform RMF cascade simulations in a box with periodic boundary conditions. In this way we can better pin down all such fine relativistic effects in particle production, that could likely show up even in realistic heavy ion collisions. In particular, K(+,0) production is expected to be directly related to the high density behaviour of the symmetry energy, since kaons are produced very early during the high density stage of the collision and their mean free path is rather large. We show that the K(+)/K(0) ratio reflects important isospin contributions on the production rates just because of the large sensitivity around the threshold. The results are very promising for the possibility of a direct link between particle production data in exotic Heavy Ion Collisions and the isospin dependent part of the Equation of State at high baryon densities.
Colonna Maria
Ferini Graziella
Gaitanos Theodoros
Toro Massimo Di
No associations
LandOfFree
Aspects of particle production in isospin asymmetric matter does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Aspects of particle production in isospin asymmetric matter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Aspects of particle production in isospin asymmetric matter will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-21260