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Isospin Dependence of Nucleon-Nucleon Elastic Cross Section
The in-medium neutron-proton, proton-proton(neutron-neutron) scattering cross
sections(, ) are studied based on QHD-II
type Lagrangian within the framework of the microscopic transport theory. The
results demonstrate that, for free nucleon-nucleon scattering cross sections,
the isospin dependence is dominantly caused by meson field. The medium
correction of nucleon-nucleon scattering cross sections is also isospin
dependent, depends on the baryon density weakly and
depends on the baryon density significantly, which is due
to the different effects of the medium correction of nucleon mass and
meson mass on and , respectivelyComment: PDF fil