Production, decays, and forward-backward asymmetries of extra gauge bosons inE6

We consider the Drell-Yan production of an extra Z boson from the ${\mathrm{E}}_6$ electroweak gauge group in pp¯ and pp colliders. If there is only one extra Z at electroweak energies, it may be a mixture of the two extra U(1) groups in ${\mathrm{E}}_6$. We discuss how to determine this mixing by examining the extra-Z-boson couplings to fermions through its decay modes and ${\mu }^{+}$ ${\mu }^{\mathrm{-}}$ forward-backward asymmetries. We also discuss different mass scales of the exotic fermions present in the 27 representations of ${\mathrm{E}}_6$.