Effects of symmetry energy in ${}^{132}\mathrm{Sn}{+}^{124}\mathrm{Sn}$ reaction at 300 MeV/nucleon

Abstract

Based on the recently updated Isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model, we studied the effects of symmetry energy on the neutron to proton n/p ratio and the ${\pi }^{-}/{\pi }^{+}$ ratio in central ${}^{132}\mathrm{Sn}{+}^{124}\mathrm{Sn}$ reaction at 300 MeV/nucleon. It is found that the n/p ratio and the ${\pi }^{-}/{\pi }^{+}$ ratio in central ${}^{132}\mathrm{Sn}{+}^{124}\mathrm{Sn}$ reaction at 300 MeV/nucleon mainly probe the symmetry energy in the density region 1-1.5 times saturation density. However, the ${\pi }^{-}/{\pi }^{+}$ ratio may be able to probe the density-dependent symmetry energy above 1.5 times saturation density by making some kinematic restrictions such as the azimuthal angle and kinetic energy cuts of emitting pions.

7 pages, 8 figures, accepted version of PRC

References in corpus (11)

• Systematics of pion emission in heavy ion collisions in the 1A GeV regime
• Systematics of central heavy ion collisions in the 1A GeV regime
• A systematic study of the ${\pi }^{-}/{\pi }^{+}$ ratio in heavy-ion collisions with the same neutron/proton ratio but different masses
• The neutron/proton ratio of squeezed-out nucleons and the high density behavior of the nuclear symmetry energy
• In-medium effects on particle production in heavy ion collisions
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• Effects of pion potential and nuclear symmetry energy on the ${\pi }^{-}/{\pi }^{+}$ ratio in heavy-ion collisions at beam energies around the pion production threshold
• Neutron-proton bremsstrahlung from intermediate energy heavy-ion reactions as a probe of the nuclear symmetry energy?
• Effect of the momentum dependence of nuclear symmetry potential on pion-/pion+ ratio in heavy-ion collisions
• Decomposition of sensitivity of the symmetry energy observables
• Effects of nuclear symmetry energy and in-medium NN cross section in heavy-ion collisions at beam energies below the pion production threshold

Cited by in corpus (5)

• Impact of quadrupole deformation on intermediate-energy heavy-ion collisions
• Determination of the density region of the symmetry energy probed by the ${\pi }^{-}/{\pi }^{+}$ ratio
• Initialization effects of nucleon profile on the $\pi$ yields in heavy-ion collisions at medium energies
• Quiescent luminosities of transiently accreting neutron stars with neutrino heating due to charged pion decay
• Transport Model Comparison Studies of Intermediate-Energy Heavy-Ion Collisions