Search for Non-SUSY New Physics at the LHC

One of the main goals of experiments at the proton-proton Large Hadron Collider (LHC) is a search for signals of new physics in the $TeV$ mass range. Besides widely studied supersymmetric extensions (SUSY) of the Standard Model, alternative models such as Extra Dimensions or Hidden Valley provide plausible descriptions of particle interactions at high energies. New models lead to new challenging signatures such as high mass resonances, stable or decaying massive particles. The discovery potential of four {\em Non-SUSY} searches of the ATLAS (A Toroidal LHC ApparatuS) and the CMS (Compact Muon Solenoid) experiments is presented in this paper. The searches are based on the full simulation of detector response, event reconstruction and triggering, and detailed studies of systematics at $\sqrt{s}= 10$ and $14\,TeV$.