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PROBING THE MOMENTUM-DEPENDENT MEDIUM MODIFICATIONS OF THE NUCLEON–NUCLEON ELASTIC CROSS SECTION
The momentum dependence of the medium modifications on nucleon-nucleon elastic cross sections is discussed with microscopic transport theories and numerically investigated with an updated UrQMD microscopic transport model. The semi-peripheral Au+Au reaction at beam energy $E_b=400A$ MeV is adopted as an example. It is found that the uncertainties of the …