Effects of elastic and inelastic NN scattering cross sections on pion-/pion+ ratios in heavy-ion collisions at intermediate energies
Abstract
Based on the isospin-dependent Boltzmann-Uehling-Uhlenbeck transport model and the scaling model according to nucleon effective mass, effects of elastic and inelastic NN scattering cross sections on pion-/pion+ in the neutron-rich reaction of Ca48+Ca48 at a beam energy of 400 MeV/nucleon are studied. It is found that cross-section effects of both NN elastic and inelastic scatterings affect Delta1232, pion- and pion+ production, as well as the value of pion-/pion+.
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