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.

8 pages, 7 figs

References in corpus (4)

• Neutron and Proton Transverse Emission Ratio Measurements and the Density Dependence of the Asymmetry Term of the Nuclear Equation of State
• Isospin effects on sub-threshold kaon production at intermediate energies
• Probing the symmetry energy and the degree of isospin equilibrium
• Recent progress constraining the nuclear equation of state from astrophysics and heavy ion reactions

Cited by in corpus (3)

• 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
• Difficulties in probing density dependent symmetry potential with the HBT interferometry