Signals for compositeness atep colliders: “Leptogluons” and exotic colored vectorbosons

Production rates and signals for coloroctet leptonsl8 atep machines like Hera and a\(\sqrt s = 2\) TeV collider are presented. In case of very heavy leptogluons:m8≈0(100 GeV) we argue that rates based on direct electron-gluon fusion are possibly strongly overestimated in the literature. In composite models the appearance of leptogluons always implies the existence of color exotic vectorbosons. Therefore we considerl8 production in electron-quark scatterings. We find that even at HERA energies such reactions should be detectable if there is nearby compositeness (Λ H ∼ several TeV) and the mass of the coloroctet neutrinomv8<180 GeV. From such events it would be possible to extract information on the deeper structure of the preon model.