What pions can tell us about the neutron skin of nuclei

International audienceWe use the Isospin Quantum Molecular Dynamics approach to analyse the isospinratios of pion production in collisions of heavy ions at incident energies below2 AGeV. It is found that the comparison of the centrality dependence atdifferent energies allows to gain information on the neutron skin of the nuclei,but also on other ingredients like the nuclear equation of state of asymmetricmatter