Modeling pion production in heavy-ion collisions at intermediate energies

Abstract

Pion production in nucleus-nucleus collisions at intermediate energies was modeled in the framework of the Isospin-dependent Boltzmann-Uehling-Uhlenbeck (IBUU) transport model. The effects of nucleon-nucleon short-range correlations in initialization and mean-field potential, isospin-dependent in-medium baryon-baryon elastic and inelastic cross sections and pion in-medium effect are all considered in this model. It is found that the ratio and yields of ${\pi }^{-}$and ${\pi }^{+}$ in Au+Au reaction at 400 MeV/nucleon reproduce the FOPI/GSI data very well especially with a soft symmetry energy in the present transport model. Predictions on the single and double ${\pi }^{-}/{\pi }^{+}$ ratio are made for the isotope reaction systems ${}^{132}\mathrm{Sn}{+}^{124}\mathrm{Sn}$ and ${}^{108}\mathrm{Sn}{+}^{112}\mathrm{Sn}$ at 300 MeV/nucleon since related experiments are being carried out at RIKEN/Japan.

7 pages, 7 figures, accepted version of PRC

References in corpus (10)

• Probing Cold Dense Nuclear Matter
• Momentum sharing in imbalanced Fermi systems
• Systematics of pion emission in heavy ion collisions in the 1A GeV regime
• Systematics of central heavy ion collisions in the 1A GeV regime
• Medium effects on pion production in heavy ion collisions
• Pion Production in Rare Isotope Collisions
• In-medium effects on particle production in heavy ion collisions
• Normal or abnormal isospin-fractionation as a qualitative probe of nuclear symmetry energy at supradensities
• 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
• Pion induced double charge exchange reactions in the Delta resonance region

Cited by in corpus (17)

• Symmetry energy extracted from the S$\pi$RIT pion data in Sn+Sn systems
• Nucleon momentum distributions in asymmetric nuclear matter
• Probing proton transition momentum in neutron-rich matter
• Effects of the initialization of nucleon momentum in heavy-ion collisions at medium energies
• 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
• High $p_t$ squeezed-out n/p ratio as a probe of $K_{\mathrm{sym}}$ of the symmetry energy
• Initialization effects of nucleon profile on the $\pi$ yields in heavy-ion collisions at medium energies
• Proton-proton momentum correlation function as a probe of the high momentum tail of the nucleon momentum distribution
• Nucleon momentum gap in asymmetric nuclear matter
• Pion production and absorption in heavy-ion collisions
• Blind spots of probing the high-density symmetry energy in heavy-ion collisions
• Quiescent luminosities of transiently accreting neutron stars with neutrino heating due to charged pion decay
• Probing in-medium nucleon-nucleon inelastic scattering cross section by using energetic n/p ratio
• Effects of high-momentum tail of nucleon momentum distribution on initiation of cluster production in heavy-ion collisions at intermediate energies
• Bayesian Analyses of Proton Multiple Flow Components in Intermediate Heavy Ion Collisions with Momentum-Dependent Interactions
• In-medium effects of nucleon-nucleon cross sections in heavy-ion collisions