Kaluza-Klein/Z' differentiation at the LHC and linear collider

We explore the capabilities of the LHC and the Linear Collider (LC) to distinguish the production of Kaluza-Klein (KK) excitations from an ordinary Z' within the context of theories with TeV scale extra dimensions. At the LHC, these states are directly produced in the Drell-Yan channel while at the LC the effects of their exchanges are indirectly felt as new contact interactions in processes such as e+e-→ff-bar. While we demonstrate that the LC is somewhat more capable at KK/Z' differentiation than is the LHC, the simplest LC analysis relies upon the LHC data for the resonance mass as an important necessary input. (author)