Elastic $qq$ Cross Sections at Finite Chemical Potential in the Nambu--Jona-Lasinio Lagrangian

International audienceWe discuss the elastic qq cross sections at finite chemical potential in the Nambu–Jona-Lasinio model. We comment the generic features of the cross sections as functions of the chemical potential, temperature and collision energy. Finally, we discuss their relevance in the construction of a relativistic transport model for heavy-ion collisions based on this effective Lagrangian