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

Abstract

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.

arXiv comment8 pages, 7 figs

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Cited by in corpus (5)

• Normal or abnormal isospin-fractionation as a qualitative probe of nuclear symmetry energy at supradensities
• ${}^3$H/${}^3$He ratio as a probe of the nuclear symmetry energy at sub-saturation densities
• Model dependence of isospin sensitive observables at high densities
• Probing the momentum dependence of medium modifications of the nucleon-nucleon elastic cross sections
• Difficulties in probing density dependent symmetry potential with the HBT interferometry