The influence of reconstruction criteria on the sensitive probes of the symmetry potential

Details The influence of reconstruction criteria on the sensitive probes of the symmetry potential The influence of reconstruction criteria on the sensitive probes of the symmetry potential

2008-08-05

arxiv.org/abs/0808.0624v1

Mod.Phys.Lett.A24:41-51,2009

Physics

Nuclear Physics

Nuclear Theory

8 pages, 7 figs

Scientific paper

10.1142/S0217732309028965

Different criteria of constructing clusters and tracing back $\Delta$ resonances from the intermediate-energy neutron-rich HICs are discussed by employing the updated UrQMD transport model. It is found that both the phase-space and the coordinate-density criteria affect the single and the double neutron/proton ratios of free nucleons at small transverse momenta, but the influence becomes invisible at large transverse momenta. The effect of different methods of reconstructing freeze-out $\Delta$s on the $\Delta^0/\Delta^{++}$ ratio is strong in a large kinetic energy region.

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