E6 matter particles

In this contribution, we analyse the discovery potential of a 500 GeV center of mass energy e+e- linear collider for these new states. In the next section, we present the general interactions of the exotic fermions, summarize the existing constraints on their masses and couplings and analyse their decay patterns. In section 3, we present the pair and single production cross section at √s = 500 GeV, allowing for a relatively light new Z' as well as for non-conventional lepton and baryon numbers of the D particles. Angular distributions and the polarization of the final heavy states will be discussed. A brief conclusion is given in the final section 4. (orig./HSI)