Abstract
Pion production in nucleus-nucleus collisions at intermediate energies was modeled in the framework of the isospin-dependent Boltzmann-Uehling-Uhlenbeck 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 in Au + Au reaction at 400 MeV/nucleon reproduce the FOPI data at GSI very well especially with a soft symmetry energy in the present transport model. Predictions on the single and double ratio are made for the isotope reaction systems and at 300 MeV/nucleon since related experiments are being carried out at RIKEN in Japan.
- Received 14 June 2017
- Revised 5 September 2017
DOI:https://doi.org/10.1103/PhysRevC.96.044605
©2017 American Physical Society