Abstract: Above 104
GeV/c projectile momenta, the total cross-sections for

and

collisions as a function of
laboratory beam momentum and center of mass energy, are independent. In the range, 0.1 up to 104
GeV/c the total
cross-section depends on the nature of the interacting particles and on the geometrical interpretations in terms of the impact
parameter. This could explain in terms of the Quantum Molecular Dynamic QMD model and its ultra relativistic approach
UrQMD, in terms of the isospin of the colliding particles, their flavor, and center of mass energies. The model can give also a