The influence of reconstruction criteria on the sensitive probes of the symmetry potential
Abstract
Description
Different criteria of constructing clusters and tracing back $Δ$ 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 $Δ$s on the $Δ^0/Δ^{++}$ ratio is strong in a large kinetic energy region.
8 pages, 7 figs
8 pages, 7 figs