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We discuss the specificity of searches for hypothetical $W^{\prime}$,$Z^{\prime}$ and $\gamma^{\prime}$ bosons at hadron colliders in single topquark and $\mu^{+}\nu_{\mu}$ production and Drell-Yan processes assuming theseparticles to be the Kaluza-Klein excitations of the gauge bosons of theStandard Model. In this case any process mediated by $W$ is also mediated bythe whole KK tower of its excitations, whereas to the processes mediated by $Z$and $\gamma$ there is not only a contribution from their KK towers, but alsofrom that of the graviton. The contributions of the towers above $W^{\prime}$,$Z^{\prime}$ and $\gamma^{\prime}$ and above the first excitation of thegraviton are included with the help of effective four-fermion Lagrangians. Wecompute the cross-sections of these processes taking into account thecontributions of the Standard Model gauge bosons, of their first KK modes andof the corresponding KK towers and discuss the impact of the interferencebetween them. For pp-collisions at the LHC with the center of mass energy 14TeV we found specific changes of the distribution tails due to the interferenceeffects. Such a modification of distribution tails is characteristic for theprocesses mediated by particles coming from extra dimensions and should alwaysbe taken into account when looking for them.

The specificity of searches for $W^{\prime}$, $Z^{\prime}$ and $\gamma^{\prime}$ coming from extra dimensions