Strange Baryonic Resonances and Resonances Coupling to Strange Hadrons at SIS Energies

The role played by haryonic resonances in the production of final states ntaining strangeness for proton proton reactions at 3.5 GeV measured by HADES is discussed by means of several very different measurements. First the associate production of A resonances accompanying final states with strange hadrons is presented, then the role of interferences among N' resonances, as measured by HADES for the first time, is summarised. Last but not least the role played by heavy resonances, with a mass larger than 2 GeV/c(2) in the production of strange and non-strange hadrons is discussed. Experimental evidence for the presence of a Delta(2000)(++) are presented and hypotheses are discussed employing the contribution of similar objects to populate the excesses measured by HADES for the E in A+A and p+A collisions and in the dilcpton sector for A+A collisions. This extensive set of results helps to better understand the dynamic underlaying particle production in elementary reactions and sets a more solid basis for the understanding of heavy ion collisions at the same energies and even higher as planned at the FAIR facility.