Probing the density dependence of the symmetry potential at low and high densities
We investigate the sensitivity of several observables to the density dependence of the symmetry potential within the microscopic transport model UrQMD (ultrarelativistic quantum molecular dynamics model). The same systems are used to probe the symmetry potential at both low and high densities. The influence of the symmetry potentials on the yields of pi-, pi+, the pi-/pi+ ratio, the n/p ratio of free nucleons and the t/3He ratio are studied for neutron-rich heavy ion collisions (208Pb+208Pb, 132Sn+124Sn, 96Zr+96Zr) at E_b=0.4A GeV. We find that these multiple probes provides comprehensive information on the density dependence of the symmetry potential.
| Author: | Qingfeng Li, Zhuxia Li, Sven Soff, Marcus Bleicher, Horst Stöcker |
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| URN: | urn:nbn:de:hebis:30-14471 |
| Document Type: | Preprint |
| Language: | English |
| Date of Publication (online): | 08.09.2005 |
| Year of first Publication: | 2005 |
| Publishing Institution: | Univ.-Bibliothek Frankfurt am Main |
| HeBIS PPN: | 19047386X |
| Institutes: | Physik |
| Frankfurt Institute for Advanced Studies | |
| Dewey Decimal Classification: | 530 Physik |
| PACS-Classification: | 24.10.Lx Monte Carlo simulations (including hadron and parton cascades and string breaking models) |
| 25.75.-q Relativistic heavy-ion collisions (collisions induced by light ions studied to calibrate relativistic heavy-ion collisions should be classified under both 25.75.-q and sections 13 or 25 appropriate to the light ions) | |
| 25.75.Dw Particle and resonance production | |
| Sammlungen: | Universitätspublikationen |
| Licence (German): |  Veröffentlichungsvertrag für Publikationen ohne Print on Demand |
